kVuatNUH

1public void createtablee() {
2    SQLiteDatabase sbb = Maindb.getInstancia().getWritableDatabase();
3    String colunas = "(id INTEGER  , valoragua INTEGER ," +
4            " acordarhora INTERGER , dormirhora INTERGER , terceirahora INTERGER , quartahora INTERGER ,  quintahora INTERGER , " +
5            "acordarminutos INTERGER , dormirminutos INTERGER  , quartaminutos INTERGER  ,  terceiraminutos INTERGER ,  quintaminutos INTERGER )";
6    String query = "CREATE TABLE IF NOT EXISTS " + Maindb.TABELA + colunas;
7    sbb.execSQL(query);
8
9}
10	
11public static final String DATABASE = "ProjetoGuimaraess";
12public static final  int VERSION = 2;
13public static final String TABELA = "AguaEmpresas";
14public static Maindb instanciaa;
15
16public static Maindb getInstancia(){
17    if(instanciaa == null) instanciaa = new Maindb();
18    return instanciaa;
19
20
21}
22
23  private Maindb( ){
24      super(Myapp.getContext() , DATABASE,null , VERSION);
25	
26Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.database.sqlite.SQLiteDatabase android.content.Context.openOrCreateDatabase(java.lang.String, int, android.database.sqlite.SQLiteDatabase$CursorFactory, android.database.DatabaseErrorHandler)' on a null object reference
27    at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:223)
28    at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:163)
29    at com.example.aleander.ma_e.aguaempresatodosmetodos.crud.Creatt.createtablee(Creatt.java:9)
30    at com.example.aleander.ma_e.aguaempresatodosmetodos.ProntoAguaEmpresa.onCreate(ProntoAguaEmpresa.java:21)
31    at android.app.Activity.performCreate(Activity.java:6323)
32    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
33    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2387)
34    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2494) 
35    at android.app.ActivityThread.access$900(ActivityThread.java:153) 
36    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1347) 
37    at android.os.Handler.dispatchMessage(Handler.java: