objective-c - UIActionSheet showInView 上的 iPad NSInternalInconsistencyException

Question

在我的通用 iPhone/iPad 应用程序中，当我尝试在模态视图中显示操作表时，仅在 iPad 上发生崩溃。当我在主视图中时它不会崩溃。这个过程是这样的:

(用户点击按钮呈现模态视图)

-(IBAction)showModal:(id)sender {
    modalController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
    [self presentModalViewController:modalController animated:YES];
}

(然后，在指定的时间调用一个函数，然后调出一个 UIActionSheet)

actionSheet = [[UIActionSheet alloc] initWithTitle:@"Alarm"
                                        delegate:self
                               cancelButtonTitle:nil
                          destructiveButtonTitle:@"Dismiss"
                                   otherButtonTitles:nil];
[actionSheet showInView:self.view];

这给了我以下错误:

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: view != nil'

有谁知道为什么我只在 iPad 上遇到此错误？谢谢!

Answer 1

你不应该使用吗？:

UIActionsheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Alarm"
                                    delegate:self
                           cancelButtonTitle:nil
                      destructiveButtonTitle:@"Dismiss"
                               otherButtonTitles:nil];

[actionSheet showInView:[self view]];