Android SQLite 事物操作

public void payment(){SQLiteDatabase db = dbOpenHelper.getWritableDatabase();db.beginTransaction();//开启事务try{db.execSQL("update person set amount=amount-10 where personid=?", new Object[]{1});db.execSQL("update person set amount=amount+10 where personid=?", new Object[]{2});db.setTransactionSuccessful();//设置事务标志为成功，当结束事务时就会提交事务}finally{db.endTransaction();}}