從表中刪除行

刪除表中的所有行

//get writable database
SQLiteDatabase db = openHelper.getWritableDatabase();

db.delete(TABLE_NAME, null, null);
db.close();

從表中刪除所有行，並在返回值中獲取已刪除行的計數

//get writable database
SQLiteDatabase db = openHelper.getWritableDatabase();

int numRowsDeleted = db.delete(TABLE_NAME, String.valueOf(1), null);
db.close();

用 WHERE 條件刪除行

//get writable database
SQLiteDatabase db = openHelper.getWritableDatabase();

String whereClause = KEY_NAME + " = ?";
String[] whereArgs = new String[]{String.valueOf(KEY_VALUE)};

//for multiple condition, join them with AND
//String whereClause = KEY_NAME1 + " = ? AND " + KEY_NAME2 + " = ?";
//String[] whereArgs = new String[]{String.valueOf(KEY_VALUE1), String.valueOf(KEY_VALUE2)};

int numRowsDeleted = db.delete(TABLE_NAME, whereClause, whereArgs);
db.close();