在clickedButtonAtIndex中显示警报？

本文介绍了在clickedButtonAtIndex中显示警报？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

i需要在用户按 buttonIndex 1 后显示确认提醒但是......如果我使用 popViewcontroller 在 clickedButtonAtIndex 它崩溃没有错误。

i need to show a confirm alert after the user press buttonIndex 1 but... if i use popViewcontroller in clickedButtonAtIndex it crash without errors.

问题在于

[self.navigationController popViewControllerAnimated:YES];

在第二次警报点击之前被调用...

is called before second Alert click...

如何解决？

这是我的代码：

- (void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { if (buttonIndex == 1) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"OK!" message:@"Completed" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil]; [alert show]; [alert release]; [self.navigationController popViewControllerAnimated:YES]; } }

推荐答案

设置两个UIAlertViews的标签属性分别为1和2。然后，在委托方法中，使用if语句来检查UIAlertView参数的标记。

Set the tag properties of the two UIAlertViews to 1 and 2, respectively. Then, in the delegate method, use if statements to check the tag of the UIAlertView argument.

示例：

- (void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { if (alertView.tag == 1) { //check the button index //create and display the other alert view (set the tag property here to 2) } else if (alertView.tag == 2) { //pop the view controller } }