vzdz8Gbq

1WEEK-1
21a) Aim: Create an android app to illustrate activity life cycle.
3activity_main.xml
4<?xml version="1.0" encoding="utf-8"?>
5<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
6xmlns:app="http://schemas.android.com/apk/res-auto"
7xmlns:tools="http://schemas.android.com/tools"
8android:layout_width="match_parent"
9android:layout_height="match_parent"
10tools:context="example.myapplication.com.activitylifecycle.MainActivity">
11
12<TextView
13android:layout_width="wrap_content"
14android:layout_height="wrap_content"
15android:text="Hello World!"
16app:layout_constraintBottom_toBottomOf="parent"
17app:layout_constraintLeft_toLeftOf="parent"
18app:layout_constraintRight_toRightOf="parent"
19app:layout_constraintTop_toTopOf="parent" />
20
21</android.support.constraint.ConstraintLayout>
22
23MainActivity.java
24package example.myapplication.com.activitylifecycle;
25
26import android.app.Activity;
27import android.os.Bundle;
28import android.util.Log;
29
30public class MainActivity extends Activity {
31
32@Override
33protected void onCreate(Bundle savedInstanceState) {
34super.onCreate(savedInstanceState);
35setContentView(R.layout.activity_main);
36Log.d("lifecycle","onCreate invoked");
37}
38@Override
39protected void onStart() {
40super.onStart();
41Log.d("lifecycle","onStart invoked");
42}
43
44@Override
45protected void onResume() {
46super.onResume();
47Log.d("lifecycle","onResume invoked");
48}
49@Override
50protected void onPause() {
51super.onPause();
52Log.d("lifecycle","onPause invoked");
53}
54@Override
55protected void onStop() {
56super.onStop();
57Log.d("lifecycle","onStop invoked");
58}
59@Override
60protected void onRestart() {
61super.onRestart();
62Log.d("lifecycle","onRestart invoked");
63}
64@Override
65protected void onDestroy() {
66super.onDestroy();
67Log.d("lifecycle","onDestroy invoked");
68}
69}
70Output:
71
72
731b) Aim: Create an android app to visit a specified webpage (Use Implicit Intent).
74activity_main.xml
75<?xml version="1.0" encoding="utf-8"?>
76<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
77xmlns:app="http://schemas.android.com/apk/res-auto"
78xmlns:tools="http://schemas.android.com/tools"
79android:layout_width="match_parent"
80android:layout_height="match_parent"
81tools:context="example.myapplication.com.implicitintent.MainActivity">
82
83<EditText
84android:id="@+id/editText"
85android:layout_width="wrap_content"
86android:layout_height="wrap_content"
87android:layout_marginEnd="8dp"
88android:layout_marginStart="8dp"
89android:layout_marginTop="60dp"
90android:ems="10"
91app:layout_constraintEnd_toEndOf="parent"
92app:layout_constraintHorizontal_bias="0.575"
93app:layout_constraintStart_toStartOf="parent"
94app:layout_constraintTop_toTopOf="parent" />
95		
96<Button
97android:id="@+id/button"
98android:layout_width="wrap_content"
99android:layout_height="wrap_content"
100android:layout_marginRight="8dp"
101android:layout_marginLeft="156dp"
102android:layout_marginTop="172dp"
103android:text="Visit"
104app:layout_constraintEnd_toEndOf="parent"
105app:layout_constraintHorizontal_bias="0.0"
106app:layout_constraintStart_toStartOf="parent"
107app:layout_constraintTop_toBottomOf="@+id/editText" />
108</android.support.constraint.ConstraintLayout>
109
110MainActivity.java
111package example.myapplication.com.implicitintent;
112
113import android.content.Intent;
114import android.net.Uri;
115import android.support.v7.app.AppCompatActivity;
116import android.os.Bundle;
117import android.view.View;
118import android.widget.Button;
119import android.widget.EditText;
120
121public class MainActivity extends AppCompatActivity {
122
123Button button;
124EditText editText;
125
126@Override
127protected void onCreate(Bundle savedInstanceState) {
128super.onCreate(savedInstanceState);
129setContentView(R.layout.activity_main);
130
131button = findViewById(R.id.button);
132editText =  findViewById(R.id.editText);
133
134button.setOnClickListener(new View.OnClickListener() {
135@Override
136public void onClick(View view) {
137String url=editText.getText().toString();
138Intent intent=new Intent(Intent.ACTION_VIEW, Uri.parse(url));
139startActivity(intent);
140}
141});
142}
143}
144Output :
145	
146
147
1481c) Aim: Create an android app to navigate between activities (Use Explicit Intent).
149activity_main.xml
150<?xml version="1.0" encoding="utf-8"?>
151<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
152xmlns:app="http://schemas.android.com/apk/res-auto"
153xmlns:tools="http://schemas.android.com/tools"
154android:layout_width="match_parent"
155android:layout_height="match_parent"
156tools:context="example.myapplication.com.explicitintent.FirstActivity">
157
158<TextView
159android:layout_width="wrap_content"
160android:layout_height="wrap_content"
161android:layout_marginEnd="8dp"
162android:layout_marginStart="8dp"
163android:layout_marginTop="8dp"
164android:text="First Activity"
165app:layout_constraintBottom_toBottomOf="parent"
166app:layout_constraintEnd_toEndOf="parent"
167app:layout_constraintHorizontal_bias="0.454"
168app:layout_constraintLeft_toLeftOf="parent"
169app:layout_constraintRight_toRightOf="parent"
170app:layout_constraintStart_toStartOf="parent"
171app:layout_constraintTop_toTopOf="parent"
172app:layout_constraintVertical_bias="0.06" />
173
174<Button
175android:id="@+id/button"
176android:layout_width="wrap_content"
177android:layout_height="wrap_content"
178android:layout_marginEnd="8dp"
179android:layout_marginStart="8dp"
180android:layout_marginTop="392dp"
181android:onClick="callSecondActivity"
182android:text="Call second activity"
183app:layout_constraintEnd_toEndOf="parent"
184app:layout_constraintStart_toStartOf="parent"
185app:layout_constraintTop_toTopOf="parent" />
186
187</android.support.constraint.ConstraintLayout>
188
189
190MainActivityOne.java
191package example.myapplication.com.explicitintent;
192import android.content.Intent;
193import android.support.v7.app.AppCompatActivity;
194import android.os.Bundle;
195import android.view.View;
196public class FirstActivity extends AppCompatActivity {
197@Override
198protected void onCreate(Bundle savedInstanceState) {
199super.onCreate(savedInstanceState);
200setContentView(R.layout.activity_first);
201}
202public void callSecondActivity(View view){
203Intent i = new Intent(getApplicationContext(), SecondActivity.class);
204i.putExtra("Value1", "Android By Myapplication");
205i.putExtra("Value2", "Simple ");
206// Set the request code to any code you like, you can identify the
207// callback via this code
208startActivity(i);
209}
210}
211activitytwo_main.xml
212<?xml version="1.0" encoding="utf-8"?>
213<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
214xmlns:app="http://schemas.android.com/apk/res-auto"
215xmlns:tools="http://schemas.android.com/tools"
216android:layout_width="match_parent"
217android:layout_height="match_parent"
218tools:context="example.myapplication.com.explicitintent.SecondActivity">
219
220<TextView
221android:layout_width="wrap_content"
222android:layout_height="wrap_content"
223android:layout_marginEnd="8dp"
224android:layout_marginStart="8dp"
225android:layout_marginTop="8dp"
226android:text="Second Activity"
227app:layout_constraintBottom_toBottomOf="parent"
228app:layout_constraintEnd_toEndOf="parent"
229app:layout_constraintHorizontal_bias="0.454"
230app:layout_constraintLeft_toLeftOf="parent"
231app:layout_constraintRight_toRightOf="parent"
232app:layout_constraintStart_toStartOf="parent"
233app:layout_constraintTop_toTopOf="parent"
234app:layout_constraintVertical_bias="0.06" />
235
236<Button
237android:id="@+id/button"
238android:layout_width="wrap_content"
239android:layout_height="wrap_content"
240android:layout_marginEnd="8dp"
241android:layout_marginStart="8dp"
242android:layout_marginTop="392dp"
243android:onClick="callFirstActivity"
244android:text="Call first activity"
245app:layout_constraintEnd_toEndOf="parent"
246app:layout_constraintStart_toStartOf="parent"
247app:layout_constraintTop_toTopOf="parent" />
248</android.support.constraint.ConstraintLayout>
249ActivityTwo class
250MainActivityTwo.java
251package example.myapplication.com.explicitintent;
252import android.content.Intent;
253import android.support.v7.app.AppCompatActivity;
254import android.os.Bundle;
255import android.view.View;
256import android.widget.Toast;
257
258public class SecondActivity extends AppCompatActivity {
259@Override
260protected void onCreate(Bundle savedInstanceState) {
261super.onCreate(savedInstanceState);
262setContentView(R.layout.activity_second);
263Bundle extras = getIntent().getExtras();
264String value1 = extras.getString("Value1");
265String value2 = extras.getString("Value2");
266Toast.makeText(getApplicationContext(),"Values are:\n First value: "+value1+
267"\n Second Value: "+value2, Toast.LENGTH_LONG).show();
268}
269public void callFirstActivity(View view){
270Intent i = new Intent(getApplicationContext(), FirstActivity.class);
271startActivity(i);
272}
273}
274
275
276Output:
277
278
279
280WEEK-2
2812a) Aim:  Create an android app to perform mathematical operations(+,-,*,/,%). (Use buttons, edittext, toast controls).
282activity_main.xml
283<?xml version="1.0" encoding="utf-8"?>
284<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
285xmlns:app="http://schemas.android.com/apk/res-auto"
286xmlns:tools="http://schemas.android.com/tools"
287android:layout_width="match_parent"
288android:layout_height="match_parent"
289tools:context="example.myapplication.com.sumoftwonumber.MainActivity">
290
291<EditText
292android:id="@+id/editText1"
293android:layout_width="wrap_content"
294android:layout_height="wrap_content"
295android:layout_alignParentTop="true"
296android:layout_centerHorizontal="true"
297android:layout_marginTop="61dp"
298android:ems="10"
299android:inputType="number"
300tools:layout_editor_absoluteX="84dp"
301tools:layout_editor_absoluteY="53dp" />
302
303<EditText
304android:id="@+id/editText2"
305android:layout_width="wrap_content"
306android:layout_height="wrap_content"
307android:layout_below="@+id/editText1"
308android:layout_centerHorizontal="true"
309android:layout_marginTop="32dp"
310android:ems="10"
311android:inputType="number"
312tools:layout_editor_absoluteX="84dp"
313tools:layout_editor_absoluteY="127dp" />
314
315<Button
316android:id="@+id/button"
317android:layout_width="wrap_content"
318android:layout_height="wrap_content"
319android:layout_below="@+id/editText2"
320android:layout_centerHorizontal="true"
321android:layout_marginTop="109dp"
322android:text="ADD"
323tools:layout_editor_absoluteX="148dp"
324tools:layout_editor_absoluteY="266dp" />
325</RelativeLayout>
326
327MainActivity.java
328package example.myapplication.com.sumoftwonumber;
329import android.support.v7.app.AppCompatActivity;
330import android.os.Bundle;
331import android.view.View;
332import android.widget.Button;
333import android.widget.EditText;
334import android.widget.Toast;
335public class MainActivity extends AppCompatActivity {
336private EditText edittext1, edittext2;
337private Button buttonSum;
338@Override
339protected void onCreate(Bundle savedInstanceState) {
340super.onCreate(savedInstanceState);
341setContentView(R.layout.activity_main);
342addListenerOnButton();
343}
344public void addListenerOnButton() {
345edittext1 = (EditText) findViewById(R.id.editText1);
346edittext2 = (EditText) findViewById(R.id.editText2);
347buttonSum = (Button) findViewById(R.id.button);
348buttonSum.setOnClickListener(new View.OnClickListener() {
349@Override
350public void onClick(View view) {
351String value1=edittext1.getText().toString();
352String value2=edittext2.getText().toString();
353int a=Integer.parseInt(value1);
354int b=Integer.parseInt(value2);
355int sum=a+b;
356Toast.makeText(getApplicationContext(),String.valueOf(sum),Toast.LENGTH_LONG).show();
357}
358});
359}
360}
361Output:
362
363
364
365
366
3672b)Aim:  Create an android app to display text in bold, italic, normal style with left, right, center alignments (use RadioButton, CheckBox controls)
368activity_main.xml
369<?xml version="1.0" encoding="utf-8"?>
370<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"
371xmlns:app="http://schemas.android.com/apk/res-auto"
372xmlns:tools="http://schemas.android.com/tools"
373android:layout_width="match_parent"
374android:layout_height="match_parent"
375tools:context=".MainActivity">
376
377<CheckBox
378android:id="@+id/checkBox1"
379android:layout_width="wrap_content"
380android:layout_height="wrap_content"
381android:text="Bold"
382android:textSize="25sp"/>
383<CheckBox
384
385android:id="@+id/checkBox2"
386android:layout_width="wrap_content"
387android:layout_height="wrap_content"
388android:text="Italic"
389android:textSize="25sp"
390android:layout_below="@+id/checkBox1"/>
391
392<CheckBox
393android:id="@+id/checkBox3"
394android:layout_width="wrap_content"
395android:layout_height="wrap_content"
396android:text="Normal"
397android:textSize="25sp"
398android:layout_below="@+id/checkBox2"/>
399<RadioGroup
400
401android:id="@+id/rg1"
402android:layout_width="wrap_content"
403android:layout_height="wrap_content"
404android:layout_below="@+id/checkBox3"
405<RadioButton
406
407android:id="@+id/radioButton1"
408android:layout_width="wrap_content"
409android:layout_height="wrap_content"
410android:checked="true"
411android:text="Left"
412android:textSize="25sp" />
413
414<RadioButton
415android:id="@+id/radioButton2"
416android:layout_width="wrap_content"
417android:layout_height="wrap_content"
418android:text="Right"
419android:textSize="25sp"/>
420
421<RadioButton
422android:id="@+id/radioButton3"
423android:layout_width="wrap_content"
424android:layout_height="wrap_content"
425android:text="Center"
426android:textSize="25sp" />
427</RadioGroup>
428
429<TextView
430android:layout_width="wrap_content"
431android:layout_height="wrap_content"
432android:layout_alignParentBottom="true"
433android:layout_centerHorizontal="true"
434android:layout_marginBottom="39dp"
435android:text="Output!!"
436android:textSize="35sp"
437android:id="@+id/textView2" />
438
439<TextView
440android:id="@+id/t1"
441android:layout_width="match_parent"
442android:layout_height="wrap_content"
443android:layout_above="@+id/textView2"
444android:layout_alignParentEnd="true"
445android:layout_marginBottom="17dp"
446android:text=""
447android:textSize="35sp" />
448
449<TextView
450android:id="@+id/t2"
451android:layout_width="match_parent"
452android:layout_height="wrap_content"
453android:layout_above="@+id/t1"
454android:layout_alignParentStart="true"
455android:layout_marginBottom="14dp"
456android:text=""
457android:textSize="35sp" />
458
459<TextView
460android:id="@+id/t3"
461android:layout_width="match_parent"
462android:layout_height="wrap_content"
463
464android:layout_alignParentStart="true"
465android:layout_centerVertical="true"
466android:text=""
467android:textSize="35sp" />
468
469<Button
470android:id="@+id/button"
471android:layout_width="wrap_content"
472android:layout_height="wrap_content"
473android:layout_alignParentEnd="true"
474android:layout_alignTop="@+id/checkBox3"
475android:layout_marginEnd="46dp"
476android:onClick="show"
477android:text="Check"
478android:textSize="35sp" />
479
480</RelativeLayout>
481
482MainActivity.java
483package com.example.administrator.week;
484import android.graphics.Typeface;
485import android.support.v7.app.AppCompatActivity;
486import android.os.Bundle;
487import android.util.Log;
488import android.view.Gravity;
489import android.view.View;
490import android.widget.CheckBox;
491import android.widget.RadioButton;
492import android.widget.RadioGroup;
493import android.widget.TextView;
494import org.w3c.dom.Text;
495
496public class MainActivityextends AppCompatActivity {
497@Override
498protected void onCreate(Bundle savedInstanceState) {
499super.onCreate(savedInstanceState);
500setContentView(R.layout.activity_main);
501    }
502public void show(View view) {
503RadioGrouprg = (RadioGroup) findViewById(R.id.rg1);
504        String value =((RadioButton)findViewById(rg.getCheckedRadioButtonId())).getText().toString();
505CheckBox c1 = (CheckBox)findViewById(R.id.checkBox1);
506CheckBox c2 = (CheckBox)findViewById(R.id.checkBox2);
507CheckBox c3 = (CheckBox)findViewById(R.id.checkBox3);
508TextView t1=(TextView)findViewById(R.id.t1);
509TextView t3=(TextView)findViewById(R.id.t3);
510TextView t2=(TextView)findViewById(R.id.t2);
511if(c1.isChecked()){
512            t1.setText("BOLD");
513            t1.setTypeface(Typeface.defaultFromStyle(Typeface.BOLD));
514if(value.equals("Left"))
515                t1.setGravity(Gravity.LEFT);
516else if(value.equals("Right"))
517                t1.setGravity(Gravity.RIGHT);
518else  t1.setGravity(Gravity.CENTER);
519        }
520else t1.setText("");
521if(c2.isChecked()){
522            t2.setText("ITALIC");
523            t2.setTypeface(Typeface.defaultFromStyle(Typeface.ITALIC));
524if(value.equals("Left"))
525                t2.setGravity(Gravity.LEFT);
526else if(value.equals("Right"))
527                t2.setGravity(Gravity.RIGHT);
528else  t2.setGravity(Gravity.CENTER);
529        }
530else t2.setText("");
531if(c3.isChecked()){
532            t3.setText("NORMAL");
533if(value.equals("Left"))
534                t3.setGravity(Gravity.LEFT);
535else if(value.equals("Right"))
536                t3.setGravity(Gravity.RIGHT);
537else  t3.setGravity(Gravity.CENTER);
538        }
539else t3.setText("");
540    }
541}
542
543
544
545
546
547
548
549
550
551Output:
552
553
554
555WEEK-3
5563a) Aim: Create an android app to display name of the country from the list(Use spinner control)
557activity_main.xml
558<?xml version="1.0" encoding="utf-8"?>  
559<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"  
560    xmlns:app="http://schemas.android.com/apk/res-auto"  
561    xmlns:tools="http://schemas.android.com/tools"  
562    android:layout_width="match_parent"  
563    android:layout_height="match_parent"  
564    tools:context="example.vardhaman.com.spinner.MainActivity">  
565  
566    <Spinner  
567        android:id="@+id/spinner"  
568        android:layout_width="149dp"  
569        android:layout_height="40dp"  
570        android:layout_marginBottom="8dp"  
571        android:layout_marginEnd="8dp"  
572        android:layout_marginStart="8dp"  
573        android:layout_marginTop="8dp"  
574        app:layout_constraintBottom_toBottomOf="parent"  
575        app:layout_constraintEnd_toEndOf="parent"  
576        app:layout_constraintHorizontal_bias="0.502"  
577        app:layout_constraintStart_toStartOf="parent"  
578        app:layout_constraintTop_toTopOf="parent"  
579        app:layout_constraintVertical_bias="0.498" />  
580  
581</android.support.constraint.ConstraintLayout>
582
583MainActivity.java
584package example.vardhaman.com.spinner;  
585  
586import android.support.v7.app.AppCompatActivity;  
587import android.os.Bundle;  
588import android.view.View;  
589import android.widget.AdapterView;  
590import android.widget.ArrayAdapter;  
591import android.widget.Spinner;  
592import android.widget.Toast;  
593  
594public class MainActivity extends AppCompatActivity implements  
595        AdapterView.OnItemSelectedListener {  
596    String[] country = { "India", "USA", "China", "Japan", "Other"};  
597
598  
599    @Override  
600    protected void onCreate(Bundle savedInstanceState) {  
601        super.onCreate(savedInstanceState);  
602        setContentView(R.layout.activity_main);  
603       //Getting the instance of Spinner and applying OnItemSelectedListener on it  
604        Spinner spin = (Spinner) findViewById(R.id.spinner);  
605        spin.setOnItemSelectedListener(this);  
606  
607        //Creating the ArrayAdapter instance having the country list  
608        ArrayAdapter aa = new ArrayAdapter(this,android.R.layout.simple_spinner_item,country);  
609        aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);  
610        //Setting the ArrayAdapter data on the Spinner  
611        spin.setAdapter(aa);  
612      }  
613      //Performing action onItemSelected and onNothing selected  
614    @Override  
615    public void onItemSelected(AdapterView<?> arg0, View arg1, int position, long id) {  
616        Toast.makeText(getApplicationContext(),country[position] , Toast.LENGTH_LONG).show();  
617    }  
618    @Override  
619    public void onNothingSelected(AdapterView<?> arg0) {  
620        // TODO Auto-generated method stub  
621    }  
622}
623Output:
624
6253b) Aim: Create an android app to calculate age of a person (Use DatePicker control)
626 activity_main.xml
627<?xml version="1.0" encoding="utf-8"?>
628<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
629    xmlns:app="http://schemas.android.com/apk/res-auto"
630    xmlns:tools="http://schemas.android.com/tools"
631    android:layout_width="match_parent"
632    android:layout_height="match_parent"
633    tools:context="com.example.administrator.datepicker.MainActivity">
634
635    <TextView
636        android:id="@+id/textview1"
637        android:layout_width="wrap_content"
638        android:layout_height="wrap_content"
639        android:layout_alignEnd="@+id/button1"
640        android:layout_alignParentTop="true"
641        android:text="Pick your DOB"
642        android:textSize="30sp"
643        android:layout_above="@+id/dp"/>
644
645    <DatePicker
646        android:id="@+id/dp"
647        android:layout_width="wrap_content"
648        android:layout_height="wrap_content"
649        android:layout_above="@+id/button1"
650        android:layout_centerHorizontal="true">
651</DatePicker>
652
653    <Button
654        android:id="@+id/button1"
655        android:layout_width="wrap_content"
656        android:layout_height="wrap_content"
657        android:layout_alignParentBottom="true"
658        android:layout_centerHorizontal="true"
659        android:text="Calculate AGE" />
660</RelativeLayout>
661 
662 MainActivity.java 
663
664package com.example.administrator.datepicker;
665
666import android.support.v7.app.AppCompatActivity;
667import android.os.Bundle;
668import android.view.View;
669import android.widget.Button;
670import android.widget.DatePicker;
671import android.widget.TextView;
672import android.util.StringBuilderPrinter;
673public class MainActivity extends AppCompatActivity {
674
675    @Override
676    protected void onCreate(Bundle savedInstanceState) {
677        super.onCreate(savedInstanceState);
678        setContentView(R.layout.activity_main);
679       final DatePicker picker1;
680        Button displayDate;
681        final TextView textview1;
682
683        textview1=(TextView)findViewById(R.id.textview1);
684        picker1=(DatePicker)findViewById(R.id.dp);
685        displayDate=(Button)findViewById(R.id.button1);
686        final int i=picker1.getYear();
687
688        textview1.setText("pick your dob:");
689        displayDate.setOnClickListener(new View.OnClickListener() {
690            @Override
691            public void onClick(View view) {
692                int j=picker1.getYear();
693                textview1.setText(String.valueOf(i-j)+"years");
694            }
695        });
696    }
697}
698OutPut:
699
700
701
702
703WEEK-4
704
7054) Aim: Create an android app for login control and validate login details .
706activity_main.xml
707<?xml version="1.0" encoding="utf-8"?>
708    <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
709        xmlns:app="http://schemas.android.com/apk/res-auto"
710        xmlns:tools="http://schemas.android.com/tools"
711        android:layout_width="match_parent"
712        android:layout_height="match_parent"
713    tools:context="e.administrator.week1a.MainActivity">
714
715        <EditText
716            android:id="@+id/editText"
717            android:layout_width="wrap_content"
718            android:layout_height="wrap_content"
719            android:layout_marginEnd="8dp"
720            android:layout_marginStart="8dp"
721            android:layout_marginTop="136dp"
722            android:ems="10"
723            android:hint="user ID"
724            app:layout_constraintEnd_toEndOf="parent"
725            app:layout_constraintHorizontal_bias="0.575"
726            app:layout_constraintStart_toStartOf="parent"
727            app:layout_constraintTop_toTopOf="parent" />
728
729    <EditText
730        android:id="@+id/editText2"
731        android:layout_width="wrap_content"
732        android:layout_height="wrap_content"
733        android:layout_marginEnd="8dp"
734        android:layout_marginStart="8dp"
735        android:layout_marginTop="204dp"
736        android:ems="10"
737        android:hint="Password"
738        android:inputType="textPassword"
739        app:layout_constraintEnd_toEndOf="parent"
740        app:layout_constraintHorizontal_bias="0.575"
741        app:layout_constraintStart_toStartOf="parent"
742        app:layout_constraintTop_toTopOf="parent" />
743
744
745    <Button
746        android:id="@+id/button"
747        android:layout_width="wrap_content"
748        android:layout_height="wrap_content"
749        android:layout_marginTop="120dp"
750        android:text="Visit"
751        app:layout_constraintEnd_toEndOf="parent"
752        app:layout_constraintStart_toStartOf="parent"
753        app:layout_constraintTop_toBottomOf="@+id/editText" />
754    </android.support.constraint.ConstraintLayout>
755MainActivity.java
756package e.administrator.week1a;
757
758import android.content.Intent;
759import android.net.Uri;
760import android.app.Activity;
761import android.os.Bundle;
762import android.view.View;
763import android.widget.Button;
764import android.widget.EditText;
765import android.widget.Toast;
766
767public class MainActivity extends Activity {
768
769    Button button;
770    EditText editText,editText1;
771    String w="vardhaman";
772    String q="cse";
773
774    @Override
775    protected void onCreate(Bundle savedInstanceState) {
776        super.onCreate(savedInstanceState);
777        setContentView(R.layout.activity_main);
778
779        button = findViewById(R.id.button);
780        editText =  findViewById(R.id.editText);
781        editText1 =  findViewById(R.id.editText2);
782
783
784        button.setOnClickListener(new View.OnClickListener() {
785            @Override
786            public void onClick(View view) {
787                String url = editText.getText().toString();
788                String pwd = editText1.getText().toString();
789                if (w.equals(url)&&q.equals(pwd)) {
790                    Toast.makeText(getApplicationContext(), "success" + url, Toast.LENGTH_LONG).show();
791Intent i=new Intent(getApplicationContext(),HomeActivity.class);
792startActivity(i);
793                }
794                else{
795                    Toast.makeText(getApplicationContext(), "! Authentication Failed" + url, Toast.LENGTH_LONG).show();
796            }
797            }
798        });
799    }
800}
801
802Android Manifest.xml
803<activity
804        android:name=".HomeActivity"
805        android:label="@string/title_activity_home"></activity>
806</application>
807
808activity_home.xml
809<?xml version="1.0" encoding="utf-8"?>
810<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
811    xmlns:app="http://schemas.android.com/apk/res-auto"
812    xmlns:tools="http://schemas.android.com/tools"
813    android:layout_width="match_parent"
814    android:layout_height="match_parent"
815    tools:context="e.administrator.week1a.HomeActivity"
816    android:background="#00ff00">
817    <TextView
818        android:layout_width="wrap_content"
819        android:layout_height="wrap_content"
820        android:text="WELCOME TO HOME"/>
821
822</android.support.constraint.ConstraintLayout>
823
824HomeActivity.java
825package e.administrator.week1a;
826
827import android.os.Bundle;
828import android.app.Activity;
829
830public class HomeActivity extends Activity {
831
832    @Override
833    protected void onCreate(Bundle savedInstanceState) {
834        super.onCreate(savedInstanceState);
835        setContentView(R.layout.activity_home);
836    }
837}
838
839
840
841
842OutPut:
843
844
845
846WEEK-5
8475a)Aim: Create an android app to demonstrate AlertDialog.
848activity_main.xml
849<?xml version="1.0" encoding="utf-8"?>
850<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
851xmlns:app="http://schemas.android.com/apk/res-auto"
852xmlns:tools="http://schemas.android.com/tools"
853android:layout_width="match_parent"
854android:layout_height="match_parent"
855tools:context="example.vardhaman.com.alertdialog.MainActivity">
856
857<Button
858android:layout_width="wrap_content"
859android:layout_height="wrap_content"
860android:id="@+id/button"
861android:text="Close app"
862app:layout_constraintBottom_toBottomOf="parent"
863app:layout_constraintLeft_toLeftOf="parent"
864app:layout_constraintRight_toRightOf="parent"
865app:layout_constraintTop_toTopOf="parent" />
866
867</android.support.constraint.ConstraintLayout>
868
869strings.xml
870
871<resources>
872<string name="app_name">AlertDialog</string>
873<string name="dialog_message">Welcome  </string>
874<string name="dialog_title">vardhaman</string>
875</resources>
876
877MainActivity.java
878package example.vardhaman.com.alertdialog;
879
880import android.content.DialogInterface;
881import android.support.v7.app.AppCompatActivity;
882import android.os.Bundle;
883import android.view.View;
884import android.widget.Button;
885import android.app.AlertDialog;
886import android.widget.Toast;
887
888public class MainActivity extends AppCompatActivity {
889Button closeButton;
890AlertDialog.Builder builder;
891@Override
892protected void onCreate(Bundle savedInstanceState) {
893super.onCreate(savedInstanceState);
894setContentView(R.layout.activity_main);
895
896closeButton = (Button) findViewById(R.id.button);
897builder = new AlertDialog.Builder(this);
898closeButton.setOnClickListener(new View.OnClickListener() {
899@Override
900public void onClick(View v) {
901
902//Uncomment the below code to Set the message and title from the strings.xml file
903builder.setMessage(R.string.dialog_message) .setTitle(R.string.dialog_title);
904
905//Setting message manually and performing action on button click
906builder.setMessage("Do you want to close this application ?")
907.setCancelable(false)
908.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
909public void onClick(DialogInterface dialog, int id) {
910finish();
911Toast.makeText(getApplicationContext(),"you choose yes action for alertbox",
912Toast.LENGTH_SHORT).show();
913}
914})
915.setNegativeButton("No", new DialogInterface.OnClickListener() {
916public void onClick(DialogInterface dialog, int id) {
917//  Action for 'NO' Button
918dialog.cancel();
919Toast.makeText(getApplicationContext(),"you choose no action for alertbox",
920Toast.LENGTH_SHORT).show();
921}
922});
923//Creating dialog box
924AlertDialog alert = builder.create();
925//Setting the title manually
926alert.setTitle("AlertDialogExample");
927alert.show();
928}
929});
930}
931}
932
933
934Output:
935
936
937
938
9395b)Aim: Create an android app to demonstrate WebView control
940activity_main.xml
941<?xml version="1.0" encoding="utf-8"?>
942<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
943xmlns:app="http://schemas.android.com/apk/res-auto"
944xmlns:tools="http://schemas.android.com/tools"
945android:layout_width="match_parent"
946android:layout_height="match_parent"
947tools:context="example.vardhaman.com.webview.MainActivity">
948
949<WebView
950android:layout_width="match_parent"
951android:layout_height="match_parent"
952android:id="@+id/webView"
953app:layout_constraintBottom_toBottomOf="parent"
954app:layout_constraintLeft_toLeftOf="parent"
955app:layout_constraintRight_toRightOf="parent"
956app:layout_constraintTop_toTopOf="parent" />
957
958</android.support.constraint.ConstraintLayout>
959MainActivity.java
960package example.vardhaman.com.webview;
961
962import android.support.v7.app.AppCompatActivity;
963import android.os.Bundle;
964import android.webkit.WebView;
965
966public class MainActivity extends AppCompatActivity {
967
968@Override
969protected void onCreate(Bundle savedInstanceState) {
970super.onCreate(savedInstanceState);
971setContentView(R.layout.activity_main);
972WebView mywebview = (WebView) findViewById(R.id.webView);
973// mywebview.loadUrl("https://www.vardhaman.org/");
974
975String data = "<html><body><h1>WELCOME TO VARDHAMAN CSE!!!h1></body></html>";
976mywebview.loadData(data, "text/html", "UTF-8");
977
978}
979}
980
981
982Output:
983
984
985
986
987
988WEEK-6
9896a)Aim: Create an android app to show Analog and Digital clocks
990activity_main.xml
991<?xml version="1.0" encoding="utf-8"?>  
992<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"  
993    xmlns:app="http://schemas.android.com/apk/res-auto"  
994    xmlns:tools="http://schemas.android.com/tools"  
995    android:layout_width="match_parent"  
996    android:layout_height="match_parent"  
997    tools:context="example.vardhaman.com.analogdigital.MainActivity">  
998  
999    <AnalogClock  
1000        android:id="@+id/analogClock1"  
1001        android:layout_width="wrap_content"  
1002        android:layout_height="wrap_content"  
1003        android:layout_alignParentTop="true"  
1004        android:layout_centerHorizontal="true"  
1005        android:layout_marginLeft="136dp"  
1006        android:layout_marginTop="296dp"  
1007        app:layout_constraintStart_toStartOf="parent"  
1008        app:layout_constraintTop_toTopOf="parent" />  
1009  
1010    <DigitalClock  
1011        android:id="@+id/digitalClock1"  
1012        android:layout_width="wrap_content"  
1013        android:layout_height="wrap_content"  
1014        android:layout_below="@+id/analogClock1"  
1015        android:layout_centerHorizontal="true"  
1016        android:layout_marginLeft="176dp"  
1017        android:layout_marginTop="84dp"  
1018        android:text="DigitalClock"  
1019        app:layout_constraintStart_toStartOf="parent"  
1020        app:layout_constraintTop_toTopOf="parent" />  
1021  
1022</android.support.constraint.ConstraintLayout>  
1023
1024
1025
1026MainActivity.java
1027package example.vardhaman.com.analogdigital;  
1028  import android.support.v7.app.AppCompatActivity;  
1029import android.os.Bundle;  
1030  public class MainActivity extends AppCompatActivity {  
1031      @Override  
1032    protected void onCreate(Bundle savedInstanceState) {  
1033        super.onCreate(savedInstanceState);  
1034        setContentView(R.layout.activity_main);  
1035    }  
1036}  
1037Output:
1038
1039
10406b)Aim: Create an android app to illustrate a progress bar.
1041activity_main.xml
1042<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
1043    xmlns:tools="http://schemas.android.com/tools"
1044    android:layout_width="match_parent"
1045    android:layout_height="match_parent"
1046    android:paddingBottom="@dimen/activity_vertical_margin"
1047    android:paddingLeft="@dimen/activity_horizontal_margin"
1048    android:paddingRight="@dimen/activity_horizontal_margin"
1049    android:paddingTop="@dimen/activity_vertical_margin"
1050    tools:context=".MainActivity">
1051     <ProgressBar
1052        android:id="@+id/simpleProgressBar"
1053        android:layout_width="wrap_content"
1054        android:layout_height="wrap_content"
1055        android:visibility="invisible"
1056        android:layout_centerHorizontal="true"/>
1057     <Button
1058        android:id="@+id/startButton"
1059        android:layout_width="200dp"
1060        android:layout_height="wrap_content"
1061        android:text="Start"
1062        android:textSize="20sp"
1063        android:textStyle="bold"
1064        android:layout_centerHorizontal="true"
1065        android:layout_marginTop="100dp"
1066        android:padding="10dp"
1067        android:background="#0f0"
1068        android:textColor="#fff"/>
1069 </RelativeLayout>
1070
1071MainActivity.java
1072package example.gb.progressbarexample;
1073import android.graphics.Color;
1074import android.support.v7.app.AppCompatActivity;
1075import android.os.Bundle;
1076import android.view.Menu;
1077import android.view.MenuItem;
1078import android.view.View;
1079import android.widget.ProgressBar;
1080import android.widget.Button;
1081public class MainActivity extends AppCompatActivity {
1082    @Override
1083    protected void onCreate(Bundle savedInstanceState) {
1084        super.onCreate(savedInstanceState);
1085        setContentView(R.layout.activity_main);
1086        // initiate progress bar and start button
1087final ProgressBar simpleProgressBar = (ProgressBar) findViewById(R.id.simpleProgressBar);
1088        Button startButton = (Button) findViewById(R.id.startButton);
1089        // perform click event on button
1090        startButton.setOnClickListener(new View.OnClickListener() {
1091            @Override
1092            public void onClick(View v) {
1093                // visible the progress bar
1094                simpleProgressBar.setVisibility(View.VISIBLE);
1095            }
1096        });
1097    }
1098}
1099 
1100Output:
1101
1102
1103WEEK-7
11047a)Aim: Create an android app to demonstrate list fragment.
1105
1106Strings.xml
1107<?xml version="1.0" encoding="utf-8"?>
1108<resources>
1109   <string name="app_name">ListFragmentDemo</string>
1110   <string name="action_settings">Settings</string>
1111   <string name="hello_world">Hello world!</string>
1112   <string name="imgdesc">imgdesc</string>
1113      <string-array name="Planets">
1114      <item>Sun</item>
1115      <item>Mercury</item>
1116      <item>Venus</item>
1117      <item>Earth</item>
1118      <item>Mars</item>
1119      <item>Jupiter</item>
1120      <item>Saturn</item>
1121      <item>Uranus</item>
1122      <item>Neptune</item>
1123   </string-array>
1124 </resources>
1125
1126activity_main.xml
1127<?xml version="1.0" encoding="utf-8"?>
1128<LinearLayout
1129   xmlns:android="http://schemas.android.com/apk/res/android"
1130   android:layout_width="match_parent"
1131   android:layout_height="match_parent"
1132   android:orientation="vertical" >
1133      <fragment
1134      android:id="@+id/fragment1"
1135      android:name="com.example.app.myapplication.MyListFragment"
1136      android:layout_width="match_parent"
1137      android:layout_height="match_parent" />
1138 </LinearLayout>
1139ListFragment.xml
1140<?xml version="1.0" encoding="utf-8"?>
1141<LinearLayout 
1142   xmlns:android="http://schemas.android.com/apk/res/android"
1143   android:layout_width="match_parent"
1144   android:layout_height="match_parent"
1145   android:orientation="vertical" >
1146    <ListView
1147      android:id="@android:id/list"
1148      android:layout_width="match_parent"
1149      android:layout_height="wrap_content" >
1150   </ListView>
1151    <TextView
1152      android:id="@android:id/empty"
1153      android:layout_width="match_parent"
1154      android:layout_height="wrap_content" >
1155   </TextView>
1156</LinearLayout>
1157ListFragment.java
1158package com.example.app.myapplication;
1159 import android.annotation.SuppressLint;
1160import android.app.ListFragment;
1161import android.os.Bundle;
1162 import android.view.LayoutInflater;
1163import android.view.View;
1164import android.view.ViewGroup;
1165 import android.widget.AdapterView;
1166import android.widget.AdapterView.OnItemClickListener;
1167import android.widget.ArrayAdapter;
1168import android.widget.Toast;
1169 public class MyListFragment extends ListFragment implements OnItemClickListener {
1170   @Override
1171   public View onCreateView(LayoutInflater inflater, 
1172      ViewGroup container, Bundle savedInstanceState) {
1173      View view = inflater.inflate(R.layout.list_fragment, container, false);
1174      return view;
1175   }
1176   @Override
1177   public void onActivityCreated(Bundle savedInstanceState) {
1178      super.onActivityCreated(savedInstanceState);
1179      ArrayAdapter adapter = ArrayAdapter.createFromResource(getActivity(), 
1180         R.array.Planets, android.R.layout.simple_list_item_1);
1181      setListAdapter(adapter);
1182      getListView().setOnItemClickListener(this);
1183   }
1184    @Override
1185   public void onItemClick(AdapterView<?> parent, View view, int position,long id) {
1186	//String value=adapter.getItem(position); 
1187	//Toast.makeText(getActivity(), "Item: " +value, Toast.LENGTH_SHORT).show();
1188      Toast.makeText(getActivity(), "Item: " + position, Toast.LENGTH_SHORT).show();
1189   }
1190}
1191
1192MainActivity.java
1193package com.example.app.myapplication;
1194 import android.support.v7.app.AppCompatActivity;
1195import android.os.Bundle;
1196 public class MainActivity extends AppCompatActivity {
1197   @Override
1198   protected void onCreate(Bundle savedInstanceState) {
1199      super.onCreate(savedInstanceState);
1200      setContentView(R.layout.activity_main);
1201   }
1202}
1203Output:
1204
1205
12067b)Aim: Create an android app to demonstrate dialog fragment
1207DialogFragment: Displays a floating dialog. Using this class to create a dialog is a good alternative to using the dialog helper methods in the Activity class, because you can incorporate a fragment dialog into the back stack of fragments managed by the activity, allowing the user to return to a dismissed fragment.
1208activity_main.xml
1209<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
1210                  xmlns:tools="http://schemas.android.com/tools"
1211                 android:layout_width="match_parent"
1212                 android:layout_height="match_parent" >
1213 
1214                 <Button
1215                 android:id="@+id/dfragbutton"
1216                 android:layout_width="wrap_content"
1217                android:layout_height="wrap_content"
1218                android:layout_centerInParent="true"
1219                android:text="@string/dialogfragment" />
1220 
1221                 <Button
1222                 android:id="@+id/alertdfragbutton"
1223                 android:layout_width="wrap_content"
1224                 android:layout_height="wrap_content"
1225                android:layout_below="@+id/dfragbutton"
1226                 android:layout_centerInParent="true"
1227                 android:text="@string/alertdialogfragment" />
1228   </RelativeLayout>
1229 
1230 MainActivity.java
1231import android.os.Bundle;
1232import android.support.v4.app.FragmentActivity;
1233import android.support.v4.app.FragmentManager;
1234import android.view.View;
1235import android.view.View.OnClickListener;
1236import android.widget.Button;
1237 
1238public class MainActivity extends FragmentActivity {
1239 
1240Button dfragbutton;
1241Button alertdfragbutton;
1242FragmentManager fm = getSupportFragmentManager();
1243 
1244@Override
1245public void onCreate(Bundle savedInstanceState) {
1246super.onCreate(savedInstanceState);
1247// Get the view from activity_main.xml
1248setContentView(R.layout.activity_main);
1249 
1250// Locate the button in activity_main.xml
1251dfragbutton = (Button) findViewById(R.id.dfragbutton);
1252alertdfragbutton = (Button) findViewById(R.id.alertdfragbutton);
1253 
1254// Capture button clicks
1255dfragbutton.setOnClickListener(new OnClickListener() {
1256public void onClick(View arg0) {
1257DFragment dFragment = new DFragment();
1258// Show DialogFragment
1259dFragment.show(fm, "Dialog Fragment");
1260}
1261});
1262 
1263// Capture button clicks
1264alertdfragbutton.setOnClickListener(new OnClickListener() {
1265public void onClick(View arg0) {
1266AlertDFragment alertdFragment = new AlertDFragment();
1267// Show Alert DialogFragment
1268alertdFragment.show(fm, "Alert Dialog Fragment");
1269}
1270});
1271}
1272
1273DialogFragment.java
1274package com.androidbegin.dialogfragment;
1275 
1276import android.os.Bundle;
1277import android.support.v4.app.DialogFragment;
1278import android.view.LayoutInflater;
1279import android.view.View;
1280import android.view.ViewGroup;
1281 
1282public class DFragment extends DialogFragment {
1283@Override
1284public View onCreateView(LayoutInflater inflater, ViewGroup container,
1285Bundle savedInstanceState) {
1286View rootView = inflater.inflate(R.layout.dialogfragment, container,
1287false);
1288getDialog().setTitle("DialogFragment ");		
1289// Do something else
1290return rootView;
1291}
1292}
1293dialogfragment.xml
1294<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
1295    xmlns:tools="http://schemas.android.com/tools"
1296    android:layout_width="match_parent"
1297    android:layout_height="match_parent" >
1298 
1299    <TextView
1300        android:layout_width="wrap_content"
1301        android:layout_height="wrap_content"
1302        android:layout_centerInParent="true"
1303        android:padding="10dp"
1304        android:text="@string/welcome" />
1305 
1306</RelativeLayout>
1307
1308strings.xml
1309<?xml version="1.0" encoding="utf-8"?>
1310<resources>
1311     <string name="app_name">DialogFragment </string>
1312    <string name="action_settings">Settings</string>
1313    <string name="hello_world">Hello world!</string>
1314    <string name="welcome">This is a DialogFragment.</string>
1315    <string name="dialogfragment">Open DialogFragment</string>
1316    <string name="alertdialogfragment">Open Alert DialogFragment</string>
1317 </resources>
1318Out put:
1319
1320WEEK-8
13218) Aim: Create an android app to demonstrate option menu with handling listeners
1322activity_main.xml
1323
1324<?xml version="1.0" encoding="utf-8"?>  
1325<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"  
1326    xmlns:app="http://schemas.android.com/apk/res-auto"  
1327    xmlns:tools="http://schemas.android.com/tools"  
1328    android:layout_width="match_parent"  
1329    android:layout_height="match_parent"  
1330    tools:context="example.myapplication.com.optionmenu.MainActivity">  
1331  
1332    <android.support.design.widget.AppBarLayout  
1333        android:layout_width="match_parent"  
1334        android:layout_height="wrap_content"  
1335        android:theme="@style/AppTheme.AppBarOverlay">  
1336  
1337        <android.support.v7.widget.Toolbar  
1338            android:id="@+id/toolbar"  
1339            android:layout_width="match_parent"  
1340            android:layout_height="?attr/actionBarSize"  
1341            android:background="?attr/colorPrimary"  
1342            app:popupTheme="@style/AppTheme.PopupOverlay" />  
1343  
1344    </android.support.design.widget.AppBarLayout>  
1345  
1346    <include layout="@layout/content_main" />  
1347  
1348</android.support.design.widget.CoordinatorLayout>  
1349 
1350context_main.xml
1351<?xml version="1.0" encoding="utf-8"?>  
1352<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"  
1353    xmlns:app="http://schemas.android.com/apk/res-auto"  
1354    xmlns:tools="http://schemas.android.com/tools"  
1355    android:layout_width="match_parent"  
1356    android:layout_height="match_parent"  
1357    app:layout_behavior="@string/appbar_scrolling_view_behavior"  
1358    tools:context="example.myapplication.com.optionmenu.MainActivity"  
1359    tools:showIn="@layout/activity_main">  
1360  
1361    
1362<TextView  
1363        android:layout_width="wrap_content"  
1364        android:layout_height="wrap_content"  
1365        android:text="Hello World!"  
1366        app:layout_constraintBottom_toBottomOf="parent"  
1367        app:layout_constraintLeft_toLeftOf="parent"  
1368        app:layout_constraintRight_toRightOf="parent"  
1369        app:layout_constraintTop_toTopOf="parent" />  
1370  
1371</android.support.constraint.ConstraintLayout>  
1372 
1373menu_main.xml
1374
1375<menu xmlns:android="http://schemas.android.com/apk/res/android"  
1376    xmlns:app="http://schemas.android.com/apk/res-auto"  
1377    xmlns:tools="http://schemas.android.com/tools"  
1378    tools:context="example.myapplication.com.optionmenu.MainActivity">  
1379  
1380    <item  android:id="@+id/item1"  
1381        android:title="Item 1"/>  
1382    <item  android:id="@+id/item2"  
1383        android:title="Item 2"/>  
1384    <item  android:id="@+id/item3"  
1385        android:title="Item 3"  
1386        app:showAsAction="withText"/>  
1387</menu> 
1388
1389MainActivity.java
1390package example.myapplication.com.optionmenu;  
1391  
1392import android.os.Bundle;  
1393import android.support.v7.app.AppCompatActivity;  
1394import android.support.v7.widget.Toolbar;  
1395import android.view.Menu;  
1396import android.view.MenuItem;  
1397import android.widget.Toast;  
1398  
1399public class MainActivity extends AppCompatActivity {  
1400  
1401    @Override  
1402    protected void onCreate(Bundle savedInstanceState) {  
1403        super.onCreate(savedInstanceState);  
1404        setContentView(R.layout.activity_main);  
1405        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);  
1406        setSupportActionBar(toolbar);  
1407    }  
1408  
1409    @Override  
1410    public boolean onCreateOptionsMenu(Menu menu) {  
1411        // Inflate the menu; this adds items to the action bar if it is present.  
1412        getMenuInflater().inflate(R.menu.menu_main, menu);  
1413        return true;  
1414    }  
1415      @Override  
1416    public boolean onOptionsItemSelected(MenuItem item) {  
1417       int id = item.getItemId();  
1418        switch (id){  
1419            case R.id.item1:  
1420                Toast.makeText(getApplicationContext(),"Item 1 Selected",Toast.LENGTH_LONG).show();  
1421                return true;  
1422            case R.id.item2:  
1423                Toast.makeText(getApplicationContext(),"Item 2 Selected",Toast.LENGTH_LONG).show();  
1424                return true;  
1425            case R.id.item3:  
1426                Toast.makeText(getApplicationContext(),"Item 3 Selected",Toast.LENGTH_LONG).show();  
1427                return true;  
1428            default:  
1429                return super.onOptionsItemSelected(item);  
1430        }  
1431    }  
1432}  
1433Output:
1434
1435
1436WEEK-9
14379) Aim: Create an android app to scroll list of images and display details of images (name, size etc) using ImageSwitcher control.
1438activity_main.xml
1439
1440<?xml version="1.0" encoding="utf-8"?>  
1441<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"  
1442    xmlns:app="http://schemas.android.com/apk/res-auto"  
1443    xmlns:tools="http://schemas.android.com/tools"  
1444    android:layout_width="match_parent"  
1445    android:layout_height="match_parent"  
1446    android:fitsSystemWindows="true"  
1447    tools:context="com.example.test.imageswitcher.MainActivity">  
1448  
1449    <android.support.design.widget.AppBarLayout  
1450        android:layout_width="match_parent"  
1451        android:layout_height="wrap_content"  
1452        android:theme="@style/AppTheme.AppBarOverlay">  
1453  
1454        <android.support.v7.widget.Toolbar  
1455            android:id="@+id/toolbar"  
1456            android:layout_width="match_parent"  
1457            android:layout_height="?attr/actionBarSize"  
1458            android:background="?attr/colorPrimary"  
1459            app:popupTheme="@style/AppTheme.PopupOverlay" />  
1460  
1461    </android.support.design.widget.AppBarLayout>  
1462    <include layout="@layout/content_main" />  
1463  
1464</android.support.design.widget.CoordinatorLayout>  
1465
1466content_main.xml
1467<?xml version="1.0" encoding="utf-8"?>  
1468<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  
1469    xmlns:app="http://schemas.android.com/apk/res-auto"  
1470    xmlns:tools="http://schemas.android.com/tools"  
1471    android:layout_width="match_parent"  
1472    android:layout_height="match_parent"  
1473    android:paddingBottom="@dimen/activity_vertical_margin"  
1474    android:paddingLeft="@dimen/activity_horizontal_margin"  
1475    android:paddingRight="@dimen/activity_horizontal_margin"  
1476    android:paddingTop="@dimen/activity_vertical_margin"  
1477    app:layout_behavior="@string/appbar_scrolling_view_behavior"  
1478    tools:context="com.example.test.imageswitcher.MainActivity"  
1479    tools:showIn="@layout/activity_main">  
1480  
1481    <TextView  
1482        android:layout_width="wrap_content"  
1483        android:layout_height="wrap_content"  
1484        android:text="Image Switcher Example"  
1485  
1486        android:id="@+id/textView"  
1487        android:layout_alignParentTop="true"  
1488        android:layout_centerHorizontal="true" />  
1489  
1490    <ImageSwitcher  
1491        android:id="@+id/imageSwitcher"  
1492        android:layout_width="match_parent"  
1493        android:layout_height="250dp"  
1494        android:layout_marginBottom="28dp"  
1495        android:layout_marginTop="40dp" />  
1496  
1497    <Button  
1498        android:layout_width="wrap_content"  
1499        android:layout_height="wrap_content"  
1500        android:text="Next"  
1501        android:id="@+id/button"  
1502        android:layout_marginBottom="47dp"  
1503        android:layout_alignParentBottom="true"  
1504        android:layout_centerHorizontal="true" />  
1505</RelativeLayout>  
1506
1507MainActivity.java
1508package com.example.test.imageswitcher;  
1509  
1510import android.os.Bundle;  
1511import android.support.v7.app.AppCompatActivity;  
1512import android.support.v7.widget.Toolbar;  
1513import android.view.View;  
1514import android.widget.Button;  
1515import android.widget.ImageSwitcher;  
1516import android.widget.ImageView;  
1517import android.widget.ViewSwitcher;  
1518  
1519import android.app.ActionBar;  
1520import android.view.animation.Animation;  
1521import android.view.animation.AnimationUtils;  
1522  
1523  
1524public class MainActivity extends AppCompatActivity {  
1525    ImageSwitcher imageSwitcher;  
1526    Button nextButton;  
1527  
1528    int imageSwitcherImages[] =    {R.drawable.cpp, R.drawable.c_sarp, R.drawable.jsp, R.drawable.mysql, R.drawable.hadoop};  
1529  
1530    int switcherImageLength = imageSwitcherImages.length;  
1531    int counter = -1;  
1532  
1533    @Override  
1534    protected void onCreate(Bundle savedInstanceState) {  
1535        super.onCreate(savedInstanceState);  
1536        setContentView(R.layout.activity_main);  
1537        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);  
1538        setSupportActionBar(toolbar);  
1539  
1540        imageSwitcher = (ImageSwitcher) findViewById(R.id.imageSwitcher);  
1541        nextButton = (Button) findViewById(R.id.button);  
1542  
1543        imageSwitcher.setFactory(new ViewSwitcher.ViewFactory() {  
1544            @Override  
1545            public View makeView() {  
1546                ImageView switcherImageView = new ImageView(getApplicationContext());  
1547                switcherImageView.setLayoutParams(new ImageSwitcher.LayoutParams(  
1548      ActionBar.LayoutParams.FILL_PARENT, ActionBar.LayoutParams.FILL_PARENT   ));  
1549                switcherImageView.setScaleType(ImageView.ScaleType.FIT_CENTER);  
1550                switcherImageView.setImageResource(R.drawable.hadoop);  
1551                //switcherImageView.setMaxHeight(100);  
1552                return switcherImageView;  
1553            }  
1554        });  
1555  
1556        Animation aniOut = AnimationUtils.loadAnimation(this, android.R.anim.slide_out_right);  
1557        Animation aniIn = AnimationUtils.loadAnimation(this, android.R.anim.slide_in_left);  
1558  
1559       imageSwitcher.setOutAnimation(aniOut);  
1560       imageSwitcher.setInAnimation(aniIn);  
1561  
1562        nextButton.setOnClickListener(new View.OnClickListener() {  
1563            @Override  
1564            public void onClick(View v) {  
1565                counter++;  
1566                if (counter == switcherImageLength){  
1567                    counter = 0;  
1568                    imageSwitcher.setImageResource(imageSwitcherImages[counter]);  
1569                }  
1570                else{  
1571                    imageSwitcher.setImageResource(imageSwitcherImages[counter]);  
1572                }  
1573            }  
1574        });  
1575    }  
1576  
1577}  
1578 
1579Output:
1580
1581
1582
1583WEEK 10
158410a)  Aim: Create an android app to demonstrate mediaplyer
1585
1586MainActivity.java
1587package com.example.audioplay;  
1588  
1589import android.media.MediaPlayer;  
1590import android.os.Bundle;  
1591import android.os.Environment;  
1592import android.app.Activity;  
1593import android.view.Menu;  
1594import android.view.View;  
1595import android.view.View.OnClickListener;  
1596import android.widget.Button;  
1597  
1598public class MainActivity extends Activity {  
1599    Button start,pause,stop;  
1600    @Override  
1601    protected void onCreate(Bundle savedInstanceState) {  
1602        super.onCreate(savedInstanceState);  
1603        setContentView(R.layout.activity_main);  
1604          
1605        start=(Button)findViewById(R.id.button1);  
1606        pause=(Button)findViewById(R.id.button2);  
1607        stop=(Button)findViewById(R.id.button3);  
1608        //creating media player  
1609        final MediaPlayer mp=new MediaPlayer();  
1610        try{  
1611                //you can change the path, here path is external directory(e.g. sdcard) /Music/maine.mp3  
1612        mp.setDataSource(Environment.getExternalStorageDirectory().getPath()+"/Music/maine.mp3");  
1613          
1614        mp.prepare();  
1615        }catch(Exception e){e.printStackTrace();}  
1616          
1617        start.setOnClickListener(new OnClickListener() {  
1618            @Override  
1619            public void onClick(View v) {  
1620                mp.start();  
1621            }  
1622        });  
1623        pause.setOnClickListener(new OnClickListener() {  
1624            @Override  
1625            public void onClick(View v) {  
1626                mp.pause();  
1627            }  
1628        });  
1629        stop.setOnClickListener(new OnClickListener() {  
1630            @Override  
1631            public void onClick(View v) {  
1632                mp.stop();  
1633            }  
1634        });  
1635    }  
1636}
1637activity_main.xml
1638<RelativeLayout xmlns:androclass="http://schemas.android.com/apk/res/android"  
1639    xmlns:tools="http://schemas.android.com/tools"  
1640    android:layout_width="match_parent"  
1641    android:layout_height="match_parent"  
1642    android:paddingBottom="@dimen/activity_vertical_margin"  
1643    android:paddingLeft="@dimen/activity_horizontal_margin"  
1644    android:paddingRight="@dimen/activity_horizontal_margin"  
1645    android:paddingTop="@dimen/activity_vertical_margin"  
1646    tools:context=".MainActivity" >  
1647  
1648    <TextView  
1649        android:id="@+id/textView1"  
1650        android:layout_width="wrap_content"  
1651        android:layout_height="wrap_content"  
1652        android:layout_alignParentTop="true"  
1653        android:layout_marginTop="30dp"  
1654        android:text="Audio Controller" />  
1655  
1656    <Button  
1657        android:id="@+id/button1"  
1658        style="?android:attr/buttonStyleSmall"  
1659        android:layout_width="wrap_content"  
1660        android:layout_height="wrap_content"  
1661        android:layout_alignLeft="@+id/textView1"  
1662        android:layout_below="@+id/textView1"  
1663        android:layout_marginTop="48dp"  
1664        android:text="start" />  
1665  
1666    <Button  
1667        android:id="@+id/button2"  
1668        style="?android:attr/buttonStyleSmall"  
1669        android:layout_width="wrap_content"  
1670        android:layout_height="wrap_content"  
1671        android:layout_alignTop="@+id/button1"  
1672        android:layout_toRightOf="@+id/button1"  
1673        android:text="pause" />  
1674  
1675    <Button  
1676        android:id="@+id/button3"  
1677        style="?android:attr/buttonStyleSmall"  
1678        android:layout_width="wrap_content"  
1679        android:layout_height="wrap_content"  
1680        android:layout_alignTop="@+id/button2"  
1681        android:layout_toRightOf="@+id/button2"  
1682        android:text="stop" />  
1683  
1684</RelativeLayout>
1685
1686Output:
1687
1688
1689
169010b) Aim: Create an android app to show details of phone contacts and implement calling, receiving
1691activity_main.xml
1692<RelativeLayout xmlns:androclass="http://schemas.android.com/apk/res/android"  
1693    xmlns:tools="http://schemas.android.com/tools"  
1694    android:layout_width="match_parent"  
1695    android:layout_height="match_parent"  
1696    tools:context=".MainActivity" >  
1697  
1698    <Button  
1699        android:id="@+id/button1"  
1700        android:layout_width="wrap_content"  
1701        android:layout_height="wrap_content"  
1702        android:layout_alignParentTop="true"  
1703        android:layout_centerHorizontal="true"  
1704        android:layout_marginTop="118dp"  
1705        android:text="Call" />  
1706  
1707    <EditText  
1708        android:id="@+id/editText1"  
1709        android:layout_width="wrap_content"  
1710        android:layout_height="wrap_content"  
1711        android:layout_alignParentTop="true"  
1712        android:layout_centerHorizontal="true"  
1713        android:layout_marginTop="25dp"  
1714        android:ems="10" />  
1715  
1716</RelativeLayout> 
1717
1718Android Manifest.xml
1719<uses-permission android:name="android.permission.CALL_PHONE" />
1720MainActivity.java
1721package com.example.phonecall;  
1722  
1723import android.net.Uri;  
1724import android.os.Bundle;  
1725import android.app.Activity;  
1726import android.content.Intent;  
1727import android.view.Menu;  
1728import android.view.View;  
1729import android.view.View.OnClickListener;  
1730import android.widget.Button;  
1731import android.widget.EditText;  
1732  
1733public class MainActivity extends Activity {  
1734    EditText edittext1;  
1735    Button button1;  
1736    @Override  
1737    protected void onCreate(Bundle savedInstanceState) {  
1738        super.onCreate(savedInstanceState);  
1739        setContentView(R.layout.activity_main);  
1740  
1741        //Getting the edittext and button instance  
1742        edittext1=(EditText)findViewById(R.id.editText1);  
1743        button1=(Button)findViewById(R.id.button1);  
1744  
1745        //Performing action on button click  
1746        button1.setOnClickListener(new OnClickListener(){  
1747  
1748            @Override  
1749            public void onClick(View arg0) {  
1750                String number=edittext1.getText().toString();  
1751                Intent callIntent = new Intent(Intent.ACTION_CALL);  
1752                callIntent.setData(Uri.parse("tel:"+number));  
1753                startActivity(callIntent);  
1754            }  
1755              
1756        });  
1757    }  
1758  
1759    @Override  
1760    public boolean onCreateOptionsMenu(Menu menu) {  
1761        // Inflate the menu; this adds items to the action bar if it is present.  
1762        getMenuInflater().inflate(R.menu.activity_main, menu);  
1763        return true;  
1764    }  } 
1765
1766
1767Output:
1768
1769
1770
1771
1772WEEK 11 (Camera Application)
177311) Aim: Create an android app to demonstrate camera.
1774By the help of 2 constants of MediaStore class, we can capture picture and video without using the instance of Camera class.
17751. ACTION_IMAGE_CAPTURE
17762. ACTION_VIDEO_CAPTURE
1777activity_main.xml
1778<RelativeLayout xmlns:androclass="http://schemas.android.com/apk/res/android"  
1779    xmlns:tools="http://schemas.android.com/tools"  
1780    android:layout_width="match_parent"  
1781    android:layout_height="match_parent"  
1782    tools:context=".MainActivity" >  
1783  
1784
1785   <Button  
1786        android:id="@+id/button1"  
1787        android:layout_width="wrap_content"  
1788        android:layout_height="wrap_content"  
1789        android:layout_alignParentBottom="true"  
1790        android:layout_centerHorizontal="true"  
1791        android:text="Take a Photo" >  
1792    </Button>  
1793  
1794    <ImageView  
1795        android:id="@+id/imageView1"  
1796        android:layout_width="fill_parent"  
1797        android:layout_height="fill_parent"  
1798        android:layout_above="@+id/button1"  
1799        android:layout_alignParentTop="true"  
1800        android:src="@drawable/ic_launcher" >  
1801    </ImageView>  
1802</RelativeLayout>
1803
1804MainActivity.java
1805
1806package com.example.camera;  
1807  
1808import android.app.Activity;  
1809import android.content.Intent;  
1810import android.graphics.Bitmap;  
1811import android.os.Bundle;  
1812import android.view.Menu;  
1813import android.view.View;  
1814import android.widget.Button;  
1815import android.widget.ImageView;  
1816  
1817public class MainActivity extends Activity {  
1818     private static final int CAMERA_REQUEST = 1888;  
1819     ImageView imageView;  
1820     public void onCreate(Bundle savedInstanceState) {  
1821  
1822         super.onCreate(savedInstanceState);  
1823         setContentView(R.layout.activity_main);  
1824  
1825         imageView = (ImageView) this.findViewById(R.id.imageView1);  
1826         Button photoButton = (Button) this.findViewById(R.id.button1);  
1827  
1828         photoButton.setOnClickListener(new View.OnClickListener() {  
1829  
1830         @Override  
1831         public void onClick(View v) {  
1832Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);  
1833              startActivityForResult(cameraIntent, CAMERA_REQUEST);  
1834         }  
1835        });  
1836       }  
1837  
1838     protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
1839      if (requestCode == CAMERA_REQUEST) {  
1840       Bitmap photo = (Bitmap) data.getExtras().get("data");  
1841       imageView.setImageBitmap(photo);  
1842      }  
1843   }  
1844  
1845    @Override  
1846    public boolean onCreateOptionsMenu(Menu menu) {  
1847        // Inflate the menu; this adds items to the action bar if it is present.  
1848        getMenuInflater().inflate(R.menu.activity_main, menu);  
1849        return true;  
1850    }  
1851  
1852}
1853
1854Output:
1855
1856
1857WEEK 12
185812a) Aim:  Create an android app to demonstrate sending e-mail
1859activity_main.xml
1860
1861<RelativeLayout xmlns:androclass="http://schemas.android.com/apk/res/android"
1862xmlns:tools="http://schemas.android.com/tools"
1863android:layout_width="match_parent"
1864android:layout_height="match_parent"
1865tools:context=".MainActivity" >
1866
1867<EditText
1868android:id="@+id/editText1"
1869android:layout_width="wrap_content"
1870android:layout_height="wrap_content"
1871android:layout_alignParentRight="true"
1872android:layout_alignParentTop="true"
1873android:layout_marginRight="22dp"
1874android:layout_marginTop="16dp"
1875android:ems="10" />
1876
1877<EditText
1878android:id="@+id/editText2"
1879android:layout_width="wrap_content"
1880android:layout_height="wrap_content"
1881android:layout_alignLeft="@+id/editText1"
1882android:layout_below="@+id/editText1"
1883android:layout_marginTop="18dp"
1884android:ems="10" >
1885<requestFocus />
1886</EditText>
1887
1888<EditText
1889android:id="@+id/editText3"
1890android:layout_width="wrap_content"
1891android:layout_height="wrap_content"
1892android:layout_alignLeft="@+id/editText2"
1893android:layout_below="@+id/editText2"
1894android:layout_marginTop="28dp"
1895android:ems="10"
1896android:inputType="textMultiLine" />
1897
1898
1899<TextView
1900android:id="@+id/textView1"
1901android:layout_width="wrap_content"
1902android:layout_height="wrap_content"
1903android:layout_alignBaseline="@+id/editText1"
1904android:layout_alignBottom="@+id/editText1"
1905android:layout_alignParentLeft="true"
1906android:text="To:" />
1907
1908<TextView
1909android:id="@+id/textView2"
1910android:layout_width="wrap_content"
1911android:layout_height="wrap_content"
1912android:layout_alignBaseline="@+id/editText2"
1913android:layout_alignBottom="@+id/editText2"
1914android:layout_alignParentLeft="true"
1915android:text="Subject:" />
1916
1917<TextView
1918android:id="@+id/textView3"
1919android:layout_width="wrap_content"
1920android:layout_height="wrap_content"
1921android:layout_alignBaseline="@+id/editText3"
1922android:layout_alignBottom="@+id/editText3"
1923android:layout_alignParentLeft="true"
1924android:text="Message:" />
1925
1926<Button
1927android:id="@+id/button1"
1928android:layout_width="wrap_content"
1929android:layout_height="wrap_content"
1930android:layout_alignLeft="@+id/editText3"
1931android:layout_below="@+id/editText3"
1932android:layout_marginLeft="76dp"
1933android:layout_marginTop="20dp"
1934android:text="Compose an email" />
1935
1936</RelativeLayout>
1937
1938MainActivity.java
1939package com.example.sendemail;
1940
1941import android.os.Bundle;
1942import android.app.Activity;
1943import android.content.Intent;
1944import android.view.Menu;
1945import android.view.View;
1946import android.view.View.OnClickListener;
1947import android.widget.Button;
1948import android.widget.EditText;
1949
1950public class MainActivity extends Activity {
1951EditText editTextTo,editTextSubject,editTextMessage;
1952Button send;
1953@Override
1954protected void onCreate(Bundle savedInstanceState) {
1955super.onCreate(savedInstanceState);
1956setContentView(R.layout.activity_main);
1957
1958editTextTo=(EditText)findViewById(R.id.editText1);
1959editTextSubject=(EditText)findViewById(R.id.editText2);
1960editTextMessage=(EditText)findViewById(R.id.editText3);
1961
1962send=(Button)findViewById(R.id.button1);
1963
1964send.setOnClickListener(new OnClickListener(){
1965
1966@Override
1967public void onClick(View arg0) {
1968String to=editTextTo.getText().toString();
1969String subject=editTextSubject.getText().toString();
1970String message=editTextMessage.getText().toString();
1971
1972
1973Intent email = new Intent(Intent.ACTION_SEND);
1974email.putExtra(Intent.EXTRA_EMAIL, new String[]{ to});
1975email.putExtra(Intent.EXTRA_SUBJECT, subject);
1976email.putExtra(Intent.EXTRA_TEXT, message);
1977
1978//need this to prompts email client only
1979email.setType("message/rfc822");
1980
1981startActivity(Intent.createChooser(email, "Choose an Email client :"));
1982
1983}
1984
1985});
1986}
1987
1988@Override
1989public boolean onCreateOptionsMenu(Menu menu) {
1990// Inflate the menu; this adds items to the action bar if it is present.
1991getMenuInflater().inflate(R.menu.activity_main, menu);
1992return true;
1993}
1994
1995}
1996Output:
1997
1998
199912b) Aim:  Create an android app to demonstrate sending SMS
2000activity_main.xml
2001<RelativeLayout xmlns:androclass="http://schemas.android.com/apk/res/android"
2002xmlns:tools="http://schemas.android.com/tools"
2003android:layout_width="match_parent"
2004android:layout_height="match_parent"
2005tools:context=".MainActivity" >
2006
2007<EditText
2008android:id="@+id/editText1"
2009android:layout_width="wrap_content"
2010android:layout_height="wrap_content"
2011android:layout_alignParentRight="true"
2012android:layout_alignParentTop="true"
2013android:layout_marginRight="20dp"
2014android:ems="10" />
2015
2016<EditText
2017android:id="@+id/editText2"
2018android:layout_width="wrap_content"
2019android:layout_height="wrap_content"
2020android:layout_alignLeft="@+id/editText1"
2021android:layout_below="@+id/editText1"
2022android:layout_marginTop="26dp"
2023android:ems="10"
2024android:inputType="textMultiLine" />
2025
2026<TextView
2027android:id="@+id/textView1"
2028android:layout_width="wrap_content"
2029android:layout_height="wrap_content"
2030android:layout_alignBaseline="@+id/editText1"
2031android:layout_alignBottom="@+id/editText1"
2032android:layout_toLeftOf="@+id/editText1"
2033android:text="Mobile No:" />
2034
2035<TextView
2036android:id="@+id/textView2"
2037android:layout_width="wrap_content"
2038android:layout_height="wrap_content"
2039android:layout_alignBaseline="@+id/editText2"
2040android:layout_alignBottom="@+id/editText2"
2041android:layout_alignLeft="@+id/textView1"
2042android:text="Message:" />
2043
2044<Button
2045android:id="@+id/button1"
2046android:layout_width="wrap_content"
2047android:layout_height="wrap_content"
2048android:layout_alignLeft="@+id/editText2"
2049android:layout_below="@+id/editText2"
2050android:layout_marginLeft="34dp"
2051android:layout_marginTop="48dp"
2052android:text="Send SMS" />
2053</RelativeLayout>
2054
2055Android-Manifest.xml
2056
2057<uses-permission android:name="android.permission.SEND_SMS"/>
2058
2059MainActivity.java
2060package com.example.sendsms;
2061
2062import android.os.Bundle;
2063import android.app.Activity;
2064import android.app.PendingIntent;
2065import android.content.Intent;
2066import android.telephony.SmsManager;
2067import android.view.Menu;
2068import android.view.View;
2069import android.view.View.OnClickListener;
2070import android.widget.Button;
2071import android.widget.EditText;
2072import android.widget.Toast;
2073
2074public class MainActivity extends Activity {
2075
2076EditText mobileno,message;
2077Button sendsms;
2078@Override
2079protected void onCreate(Bundle savedInstanceState) {
2080super.onCreate(savedInstanceState);
2081setContentView(R.layout.activity_main);
2082
2083mobileno=(EditText)findViewById(R.id.editText1);
2084message=(EditText)findViewById(R.id.editText2);
2085sendsms=(Button)findViewById(R.id.button1);
2086
2087//Performing action on button click
2088sendsms.setOnClickListener(new OnClickListener() {
2089
2090@Override
2091public void onClick(View arg0) {
2092String no=mobileno.getText().toString();
2093String msg=message.getText().toString();
2094
2095//Getting intent and PendingIntent instance
2096Intent intent=new Intent(getApplicationContext(),MainActivity.class);
2097PendingIntent pi=PendingIntent.getActivity(getApplicationContext(), 0, intent,0);
2098
2099//Get the SmsManager instance and call the sendTextMessage method to send message
2100SmsManager sms=SmsManager.getDefault();
2101sms.sendTextMessage(no, null, msg, pi,null);
2102
2103Toast.makeText(getApplicationContext(), "Message Sent successfully!",
2104Toast.LENGTH_LONG).show();
2105} }); }
2106@Override
2107public boolean onCreateOptionsMenu(Menu menu) {
2108// Inflate the menu; this adds items to the action bar if it is present.
2109getMenuInflater().inflate(R.menu.activity_main, menu);
2110return true;
2111}
2112}
2113Output:
2114
2115WEEK 13
2116
211713) Aim: Create an android app to store details of students in SQLite and display the details perform insert, update, delete operations on student database
2118
2119 activity_main.xml
2120
2121<AbsoluteLayoutxmlns:android="http://schemas.android.com/apk/res/android"
2122android:layout_width="match_parent"
2123android:layout_height="match_parent">
2124<TextView
2125android:layout_width="wrap_content"
2126android:layout_height="wrap_content"
2127android:layout_x="50dp"
2128android:layout_y="20dp"
2129android:text="Student Details"
2130android:textSize="30sp" />
2131
2132<TextView
2133android:layout_width="wrap_content"
2134android:layout_height="wrap_content"
2135android:layout_x="20dp"
2136android:layout_y="110dp"
2137android:text="Enter Rollno:"
2138android:textSize="20sp" />
2139
2140<EditText
2141android:id="@+id/Rollno"
2142android:layout_width="150dp"
2143android:layout_height="wrap_content"
2144android:layout_x="175dp"
2145android:layout_y="100dp"
2146android:inputType="number"
2147android:textSize="20sp" />
2148
2149<TextView
2150android:layout_width="wrap_content"
2151android:layout_height="wrap_content"
2152android:layout_x="20dp"
2153android:layout_y="160dp"
2154android:text="Enter Name:"
2155android:textSize="20sp" />
2156
2157<EditText
2158android:id="@+id/Name"
2159android:layout_width="150dp"
2160android:layout_height="wrap_content"
2161android:layout_x="175dp"
2162android:layout_y="150dp"
2163android:inputType="text"
2164android:textSize="20sp" />
2165
2166<TextView
2167android:layout_width="wrap_content"
2168android:layout_height="wrap_content"
2169android:layout_x="20dp"
2170android:layout_y="210dp"
2171android:text="Enter Marks:"
2172android:textSize="20sp" />
2173
2174<EditText
2175android:id="@+id/Marks"
2176android:layout_width="150dp"
2177android:layout_height="wrap_content"
2178android:layout_x="175dp"
2179android:layout_y="200dp"
2180android:inputType="number"
2181android:textSize="20sp" />
2182
2183<Button
2184android:id="@+id/Insert"
2185android:layout_width="150dp"
2186android:layout_height="wrap_content"
2187android:layout_x="25dp"
2188android:layout_y="300dp"
2189android:text="Insert"
2190android:textSize="30dp" />
2191
2192<Button
2193android:id="@+id/Delete"
2194android:layout_width="150dp"
2195android:layout_height="wrap_content"
2196android:layout_x="200dp"
2197android:layout_y="300dp"
2198android:text="Delete"
2199android:textSize="30dp" />
2200
2201<Button
2202android:id="@+id/Update"
2203android:layout_width="150dp"
2204android:layout_height="wrap_content"
2205android:layout_x="25dp"
2206android:layout_y="400dp"
2207android:text="Update"
2208android:textSize="30dp" />
2209
2210<Button
2211android:id="@+id/View"
2212android:layout_width="150dp"
2213android:layout_height="wrap_content"
2214android:layout_x="200dp"
2215android:layout_y="400dp"
2216android:text="View"
2217android:textSize="30dp" />
2218
2219<Button
2220android:id="@+id/ViewAll"
2221android:layout_width="200dp"
2222android:layout_height="wrap_content"
2223android:layout_x="100dp"
2224android:layout_y="500dp"
2225android:text="View All"
2226android:textSize="30dp" />
2227</AbsoluteLayout>
2228
2229MainActivity.java
2230import android.support.v7.app.AlertDialog;
2231import android.support.v7.app.AppCompatActivity;
2232importandroid.os.Bundle;
2233importandroid.content.Context;
2234importandroid.database.Cursor;
2235importandroid.database.sqlite.SQLiteDatabase;
2236importandroid.os.Bundle;
2237importandroid.view.View;
2238importandroid.widget.Button;
2239importandroid.widget.EditText;
2240
2241
2242public class MainActivity extends AppCompatActivity implements android.view.View.OnClickListener {
2243
2244EditTextRollno,Name,Marks;
2245    Button Insert,Delete,Update,View,ViewAll;
2246SQLiteDatabasedb;
2247    /** Called when the activity is first created. */
2248    @Override
2249public void onCreate(Bundle savedInstanceState)
2250    {
2251super.onCreate(savedInstanceState);
2252setContentView(R.layout.activity_main);
2253
2254Rollno=(EditText)findViewById(R.id.Rollno);
2255        Name=(EditText)findViewById(R.id.Name);
2256        Marks=(EditText)findViewById(R.id.Marks);
2257        Insert=(Button)findViewById(R.id.Insert);
2258        Delete=(Button)findViewById(R.id.Delete);
2259        Update=(Button)findViewById(R.id.Update);
2260        View=(Button)findViewById(R.id.View);
2261ViewAll=(Button)findViewById(R.id.ViewAll);
2262
2263Insert.setOnClickListener(this);
2264Delete.setOnClickListener(this);
2265Update.setOnClickListener(this);
2266View.setOnClickListener(this);
2267ViewAll.setOnClickListener(this);
2268
2269        // Creating database and table
2270db=openOrCreateDatabase("StudentDB", Context.MODE_PRIVATE, null);
2271db.execSQL("CREATE TABLE IF NOT EXISTS student(rollnoVARCHAR,nameVARCHAR,marks VARCHAR);");
2272    }
2273public void onClick(View view)
2274    {
2275        // Inserting a record to the Student table
2276if(view==Insert)
2277        {
2278            // Checking for empty fields
2279if(Rollno.getText().toString().trim().length()==0||
2280Name.getText().toString().trim().length()==0||
2281Marks.getText().toString().trim().length()==0)
2282            {
2283showMessage("Error", "Please enter all values");
2284return;
2285            }
2286db.execSQL("INSERT INTO student VALUES('"+Rollno.getText()+"','"+Name.getText()+
2287                    "','"+Marks.getText()+"');");
2288showMessage("Success", "Record added");
2289clearText();
2290        }
2291        // Deleting a record from the Student table
2292if(view==Delete)
2293        {
2294            // Checking for empty roll number
2295if(Rollno.getText().toString().trim().length()==0)
2296            {
2297showMessage("Error", "Please enter Rollno");
2298return;
2299            }
2300            Cursor c=db.rawQuery("SELECT * FROM student WHERE rollno='"+Rollno.getText()+"'", null);
2301if(c.moveToFirst())
2302            {
2303db.execSQL("DELETE FROM student WHERE rollno='"+Rollno.getText()+"'");
2304showMessage("Success", "Record Deleted");
2305            }
2306else
2307            {
2308showMessage("Error", "Invalid Rollno");
2309            }
2310clearText();
2311        }
2312        // Updating a record in the Student table
2313if(view==Update)
2314        {
2315            // Checking for empty roll number
2316if(Rollno.getText().toString().trim().length()==0)
2317            {
2318showMessage("Error", "Please enter Rollno");
2319return;
2320            }
2321            Cursor c=db.rawQuery("SELECT * FROM student WHERE rollno='"+Rollno.getText()+"'", null);
2322if(c.moveToFirst()) {
2323db.execSQL("UPDATE student SET name='" + Name.getText() + "',marks='" + Marks.getText() +
2324                        "' WHERE rollno='"+Rollno.getText()+"'");
2325showMessage("Success", "Record Modified");
2326            }
2327else {
2328showMessage("Error", "Invalid Rollno");
2329            }
2330clearText();
2331        }
2332        // Display a record from the Student table
2333if(view==View)
2334        {
2335            // Checking for empty roll number
2336if(Rollno.getText().toString().trim().length()==0)
2337            {
2338showMessage("Error", "Please enter Rollno");
2339return;
2340            }
2341            Cursor c=db.rawQuery("SELECT * FROM student WHERE rollno='"+Rollno.getText()+"'", null);
2342if(c.moveToFirst())
2343            {
2344Name.setText(c.getString(1));
2345Marks.setText(c.getString(2));
2346            }
2347else
2348            {
2349showMessage("Error", "Invalid Rollno");
2350clearText();
2351            }
2352        }
2353        // Displaying all the records
2354if(view==ViewAll)
2355        {
2356            Cursor c=db.rawQuery("SELECT * FROM student", null);
2357if(c.getCount()==0)
2358            {
2359showMessage("Error", "No records found");
2360return;
2361            }
2362StringBuffer buffer=new StringBuffer();
2363while(c.moveToNext())
2364            {
2365buffer.append("Rollno: "+c.getString(0)+"\n");
2366buffer.append("Name: "+c.getString(1)+"\n");
2367buffer.append("Marks: "+c.getString(2)+"\n\n");
2368            }
2369showMessage("Student Details", buffer.toString());
2370        }
2371    }
2372public void showMessage(String title,String message)
2373    {
2374AlertDialog.Builder builder=new AlertDialog.Builder(this);
2375builder.setCancelable(true);
2376builder.setTitle(title);
2377builder.setMessage(message);
2378builder.show();
2379    }
2380public void clearText()
2381    {
2382Rollno.setText("");
2383Name.setText("");
2384Marks.setText("");
2385Rollno.requestFocus();
2386    }
2387}
2388
2389
2390
2391Output: