I’ve founde already a few answers to this topic (for example this), but it is not working. I only get the warning, that it cannot resolve the method ‘openOrCreateDatabase(java.lang.String, int, null)’.
Here is my sourcecode:
public class DBHandler { SQLiteDatabase database; DBHandler() { database = openOrCreateDatabase("DatabaseName", Context.MODE_PRIVATE, null); } }
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Answer
SQLite is a opensource SQL database that stores data to a text file on a device. Android comes in with built in SQLite database implementation.
Please check below links
Structure
public class MySQLiteHelper extends SQLiteOpenHelper { public static final String TABLE_COMMENTS = "comments"; public static final String COLUMN_ID = "_id"; public static final String COLUMN_COMMENT = "comment"; private static final String DATABASE_NAME = "commments.db"; private static final int DATABASE_VERSION = 1; // Database creation sql statement private static final String DATABASE_CREATE = "create table " + TABLE_COMMENTS + "(" + COLUMN_ID + " integer primary key autoincrement, " + COLUMN_COMMENT + " text not null);"; public MySQLiteHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); } @Override public void onCreate(SQLiteDatabase database) { database.execSQL(DATABASE_CREATE); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { Log.w(MySQLiteHelper.class.getName(), "Upgrading database from version " + oldVersion + " to " + newVersion + ", which will destroy all old data"); db.execSQL("DROP TABLE IF EXISTS " + TABLE_COMMENTS); onCreate(db); } }