Public abstract void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)Ĭalled when database needs to be upgraded. Public abstract void onCreate(SQLiteDatabase db)Ĭalled only once when database is created for the first time. There are many methods in SQLiteOpenHelper class. SQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version, DatabaseErrorHandler errorHandler)Ĭreates an object for creating, opening and managing the database. SQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version)Ĭreates an object for creating, opening and managing the database. There are two constructors of SQLiteOpenHelper class. For performing any database operation, you have to provide the implementation of onCreate() and onUpgrade() methods of SQLiteOpenHelper class. The class is used for database creation and version management. SQLiteOpenHelper class provides the functionality to use the SQLite database. For displaying data on the spinner or listview, move to the next page. Here, we are going to see the example of sqlite to store and fetch the data. So, there is no need to perform any database setup or administration task. used to perform database operations on android devices such as storing, manipulating or retrieving persistent data from the database. The create records will help you to insert the values similarly you can have your own functions for update and delete.SQLite is an open-source relational database i.e. Now you can use MyDB class in you activity to have all the database operations. Return mCursor // iterate to get each value.

Optionally override onOpen() method.Ģ.Use this subclass to create either a readable or writable database and use the SQLiteDatabase's four API methods insert(), execSQL(), update(), delete() to create, read, update and delete rows of your table.Įxample to create a MyEmployees table and to select and insert records: public class MyDatabaseHelper extends SQLiteOpenHelper Ĭursor mCursor = database.query(true, EMP_TABLE,cols,null

To use it,ġ.Override onCreate(), onUpgrade() methods of SQLiteOpenHelper. SQLiteOpenHelper takes care of all database management activities. Sqlite helper class helps us to manage database creation and version management.

Android sqlite tutorial