According to Android documentation, Resources.getSystem() only provides system-level resources, not application-level ones (like the resources inside your strings.xml file). http://developer.android.com/reference/android/content/res/Resources.html#getSystem() Try using the application’s context if you really want to retrieve your strings this way, or take my suggestion in the comment to your question.
Sqlite helper class helps us to manage database creation and version management. SQLiteOpenHelper takes care of all database management activities. To use it, 1.Override onCreate(), onUpgrade() methods of SQLiteOpenHelper. Optionally override onOpen() method. 2.Use this subclass to create either a readable or writable database and use the SQLiteDatabase’s four API methods insert(), execSQL(), update(), delete() … Read more
SQLiteOpenHelper onCreate() and onUpgrade() callbacks are invoked when the database is actually opened, for example by a call to getWritableDatabase(). The database is not opened when the database helper object itself is created. SQLiteOpenHelper versions the database files. The version number is the int argument passed to the constructor. In the database file, the version … Read more