事务结束的时候,会把最后一个成功标记之前的操作提交,成功标记之后的操作回滚

继承上面的博文：在AccountDao类中添加方法：

public void remit(int fromId,int toId,int amount) {

		sqliteDatabase db = helper.getWritableDatabase();
		try {
			db.beginTransaction();

			db.execsql("UPDATE account SET balance=balance-? WHERE _id=?",new Object[] { amount,fromId });

			System.out.println(1 / 0);

			db.execsql("UPDATE account SET balance=balance-? WHERE _id=?",toId });
			db.setTransactionSuccessful();
		} finally {
			db.endTransaction();
			db.close();
		}

	}