ios – UIAlertController仅在2秒后解除

概述我希望在呈现后立即解雇,但只能在2秒后才能解决.这该怎么做？ 这是我在UILabel上从UITapGestureRecognizer调用的方法. - (IBAction)labelTaped:(UITapGestureRecognizer *)sender { if (sender.state == UIGestureRecognizerStateEnded) { CGRect fra 我希望在呈现后立即解雇,但只能在2秒后才能解决.这该怎么做？

这是我在UILabel上从UITapGestureRecognizer调用的方法.

- (IBAction)labelTaped:(UITapGestureRecognizer *)sender {  if (sender.state == UIGestureRecognizerStateEnded) {    CGRect frame = CGRectNull;    Nsstring *message = nil;    // ...    // some code    /// ...    if (message) {        // show info alert        __weak __typeof(self)weakSelf = self;        UIAlertController* alert = [UIAlertController alertControllerWithTitle:nil                                                                       message:message                                                                preferredStyle:UIAlertControllerStyleActionSheet];        UIAlertAction* cancelAction = [UIAlertAction actionWithTitle:NSLocalizedString(@"alert_ok",@" - ")                                                               style:UIAlertActionStyleCancel                                                             handler:^(UIAlertAction * action) {                                                                 if ([weakSelf.dismissAlertTimer isValID]) {                                                                     [weakSelf.dismissAlertTimer invalIDate];                                                                 }                                                             }];        [alert addAction:cancelAction];        UIPopoverPresentationController *popoverController = alert.popoverPresentationController;        popoverController.sourceRect = frame;        popoverController.sourceVIEw = sender.vIEw;        [self.mainController presentVIEwController:alert animated:YES completion:^{            if ([weakSelf.dismissAlertTimer isValID]) {                [weakSelf.dismissAlertTimer invalIDate];            }            weakSelf.dismissAlertTimer = [NSTimer scheduledTimerWithTimeInterval:5.0 target:weakSelf selector:@selector(dismissAlertController) userInfo:nil repeats:NO];        }];    }  }}- (voID)dismissAlertController {    [self.mainController dismissVIEwControllerAnimated:YES completion:^{        //    }];}

解决方法 最简单的是这样的吗？

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Alert" message:@"message dismiss in 2 seconds" preferredStyle:UIAlertControllerStyleAlert];[self presentVIEwController:alertController animated:YES completion:nil];dispatch_after(dispatch_time(disPATCH_TIME_Now,(int64_t)(2.0 * NSEC_PER_SEC)),dispatch_get_main_queue(),^{    [alertController dismissVIEwControllerAnimated:YES completion:^{        // do something ?    }];});

或者你的意思是你还想阻止用户在触发2秒之前点击取消按钮？

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