IOS UIAlertView

//删除未支付的订单
-(void)delOrder:(UIButton*)btn{
    self.operationIndex=btn.tag;
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"删除订单" message:@"是否要删除该订单？" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
    alert.tag = 90009;
    [alert show];
}
//点击事件
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (alertView.tag == 90009) {
        if (buttonIndex == 1) {
            //TODO:
        }
    }
}