Android sqlite l'ouverture de la base de données se bloque

Question

J'ai deux classes, ma classe principale et un autre pour la gestion sqlite. Le problème que j'ai est qu'il se bloque quand il arrive à db.open() dans la classe principale et je ne sais pas pourquoi.

classe principale:

public class RingerSchedule extends Activity 
{ 
    public void onCreate(Bundle savedInstanceState) 
    { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main);   
     DBAdapter db = new DBAdapter(this); 
     db.open(); //crash! 
     //more stuff 
    } 
} 

classe sqlite:

public class DBAdapter 
{ 
    public static final String KEY_ROWID = "id"; 
    public static final String KEY_TO = "to"; 
    public static final String KEY_FROM = "from"; 
    public static final String KEY_DAY = "day";  
    public static final String KEY_FUNCTION = "function";  
    private static final String TAG = "DBAdapter"; 

    private static final String DATABASE_NAME = "myDB"; 
    private static final String DATABASE_TABLE = "schedules"; 
    private static final int DATABASE_VERSION = 1; 

    private final Context context; 

    private DatabaseHelper DBHelper; 
    private SQLiteDatabase db; 

    public DBAdapter(Context ctx) 
    { 
     this.context = ctx; 
     DBHelper = new DatabaseHelper(context); 
    } 

    private static class DatabaseHelper extends SQLiteOpenHelper 
    { 
     DatabaseHelper(Context context) 
     { 
      super(context, DATABASE_NAME, null, DATABASE_VERSION); 
     } 

     @Override 
     public void onCreate(SQLiteDatabase db) 
     { 
      db.execSQL("CREATE TABLE " 
       + DATABASE_TABLE 
       + " (id INT PRIMARY KEY AUTOINCREMENT, to TEXT," 
       + " from TEXT, day TEXT" 
       + " function TEXT);"); 
     } 
     @Override 
     public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) 
     { 
      Log.w(TAG, "Upgrading database from version " + oldVersion + " to " + newVersion + ", which will destroy all old data"); 
      db.execSQL("DROP TABLE IF EXISTS titles"); 
      onCreate(db); 
     } 
    }  

    //opens the database 
    public DBAdapter open() throws SQLException 
    { 
     this.db = DBHelper.getWritableDatabase(); 
     return this; 
    } 

    //closes the database 
    public void close() 
    { 
     DBHelper.close(); 
    } 

    //insert a schedule into the database 
    public long insertSchedule(String from, String to, String day, String function) 
    { 
     ContentValues initialValues = new ContentValues(); 
     initialValues.put(KEY_TO, to); 
     initialValues.put(KEY_FROM, from); 
     initialValues.put(KEY_DAY, day); 
     initialValues.put(KEY_FUNCTION, function); 
     return db.insert(DATABASE_TABLE, null, initialValues); 
    } 

    //deletes a particular schedule 
    public boolean deleteSchedule(long Id) 
    { 
     return db.delete(DATABASE_TABLE, KEY_ROWID + "=" + Id, null) > 0; 
    } 

    //retrieves all the schedules 
    public Cursor getAllSchedules() 
    { 
     return db.query(DATABASE_TABLE, new String[] {KEY_ROWID, KEY_TO, KEY_FROM, KEY_DAY, KEY_FUNCTION}, null, null, null, null, null, null); 
    } 

    //updates a schedule 
    public boolean updateSchedule(long Id, String to, String from, String day, String function) 
    { 
     ContentValues args = new ContentValues(); 
     args.put(KEY_TO, to); 
     args.put(KEY_FROM, from); 
     args.put(KEY_DAY, day); 
     args.put(KEY_FUNCTION, function); 
     return db.update(DATABASE_TABLE, args, KEY_ROWID + "=" + Id, null) > 0; 
    } 
} 

Answer 1

-vous fermer la base de données quelque part dans le principal? Sinon, essayez de le fermer. :)

Answer 2

Lorsque vous créez la table essayez de changer le type de id de INT à INTEGER, je ne pense pas que SQLite reconnaît la commande INT.