警報視圖未在8.4上關閉

Question

情境
1）我開始編輯鍵盤來了。
2）然后我觸摸一個按鈕
3）在botton touch上，我添加了AlertView，然后添加我已經辭職了第一響應者
4）單擊AlertView OK按鈕，我會彈出viewController
5）彈出之后，鍵盤會出現在該屏幕上一段時間並關閉。
6）應該在同一控制器上而不是在先前的控制器上將其關閉

代碼-

- (IBAction)cancelSkipButtonTouchUpInside:(id)sender {

  [self.textMobileNumber resignFirstResponder];
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:nil message:@"Entered number will not be saved" delegate:self cancelButtonTitle:nil otherButtonTitles: @"OK",@"Cancel", nil];
    alertView.tag = ktagYourNumberWillNotBeSaved;
    [alertView show];
    alertView = nil ;

}


- (void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
case ktagYourNumberWillNotBeSaved:
   {
    [self.navigationController popToViewController:self animated:YES];
     }      
 }

Answer 1

在這里，您被添加了self這意味着您的導航堆棧調用了相同的ViewController，請避免選擇第1號和第2號

更改

 [self.navigationController popToViewController:self animated:YES];

進入

   [self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:1] animated:YES];

否則選擇第二

 for (UIViewController *vc in self.navigationController.viewControllers) {
   if ([vc isKindOfClass:[ViewController2 class]]) // ViewController2 --> call your view controller where you want to pop
 {
    [self.navigationController popToViewController:vc animated:YES];
}
}

其他選擇3

[self.navigationController popViewControllerAnimated:YES]

Answer 2

您有兩種選擇
1）你可以改變

[self.navigationController popToViewController:self animated:YES];    

進入

[self.navigationController popViewControllerAnimated:YES];

2）

for (UIViewController *controller in self.navigationController.viewControllers) {

        if ([controller isKindOfClass:[ViewController class]]) {

            [self.navigationController popToViewController:controller
                                                  animated:YES];
            break;
        }
    }

Answer 3

如果您只需要在點擊調用cancelSkipButtonTouchUpInside的按鈕時關閉鍵盤，請在其中使用以下行：

[self.view endEditing:YES];

Answer 4

我已經通過使用UIAlertController而不是UIAlertView解決了此問題，因為iOS 8已棄用

 UIAlertController *alertController = [UIAlertController alertControllerWithTitle:nil message:nil preferredStyle:UIAlertControllerStyleActionSheet];

    UIAlertAction *alertActionOk = [UIAlertAction actionWithTitle:NSLocalizedString(@"Ok", @"Ok action") style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
        [self.navigationController popToViewController:self animated:YES];
    }];
    UIAlertAction *alertActionCancel = [UIAlertAction actionWithTitle:NSLocalizedString(CANCEL_ALERT_BUTTON, @"Cancel action") style:UIAlertActionStyleDefault handler:nil];

    }
    [alertController addAction:alertActionOk];
    [alertController addAction:alertActionCancel];

    [self presentViewController:alertController animated:YES completion:nil];