Android SQLite 事物操作

1. public void payment(){ 
2.         SQLiteDatabase db = dbOpenHelper.getWritableDatabase(); 
3.         db.beginTransaction();//开启事务 
4.         try{ 
5.             db.execSQL("update person set amount=amount-10 where personid=?", new Object[]{1}); 
6.             db.execSQL("update person set amount=amount+10 where personid=?", new Object[]{2}); 
7.             db.setTransactionSuccessful();//设置事务标志为成功，当结束事务时就会提交事务 
8.         }finally{ 
9.             db.endTransaction(); 
10.         } 
11.     }