iPhone UIActionSheet自动旋转不起作用 [英] iPhone UIActionSheet auto-rotating not working

问题描述

我读了很多.人们说，如果其父级未设置为自动旋转，它将不会自动旋转.我尝试了一切，但没有运气. 我创建了一个基于视图的应用程序(v4.2)，该按钮执行了以下操作:

I read a lot about that. People say it will not autorotate whene its parent is not set to auto rotate. I tried everything but no luck. I created view-based app (v4.2) with a button that executes this:

    UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Title" delegate:self cancelButtonTitle:@"Cancel Button" destructiveButtonTitle:@"Destructive Button" otherButtonTitles:@"Other Button 1", nil];
    actionSheet.actionSheetStyle = UIActionSheetStyleBlackOpaque;
    [actionSheet showInView:self.view];

根控制器设置为自动旋转. actionSheet没有.请注意，当我旋转模拟器时，不会调用任何根控制器的定向方法.代表有问题吗?怎么了?

The root controller is set to auto-rotate. The actionSheet does not. Note that when I rotate the simulator none of the root controller's orientation methods are called. Is there a problem with the delegate? What is wrong?

推荐答案

好，这是我对这个问题的解决方案:

Well, here's my solution to this problem:

基本上我们要做的是:

1. 听旋转事件.
2. 收听点击事件.
3. 关闭actionSheet并在旋转完成后再次显示. (我们需要等待一小段延迟才能采取.

例如:

@interface ViewController ()
{
    UIActionSheet *_sheet;
    BOOL _isClicked;
}
@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didRotate:) name:UIDeviceOrientationDidChangeNotification object:nil];
}

- (IBAction)click:(id)sender
{
    _isClicked = YES;

    [self showActionSheet];
}

- (void)didRotate:(NSNotification *)note
{
    [_sheet dismissWithClickedButtonIndex:1 animated:YES];
    [self performSelector:@selector(showActionSheet) withObject:nil afterDelay:1.0];
}

- (void)showActionSheet
{
    if (!_isClicked) return;

    _sheet = [[UIActionSheet alloc] initWithTitle:@"title" delegate:self cancelButtonTitle:@"cancel" destructiveButtonTitle:@"new" otherButtonTitles:@"bla", nil];
    [_sheet showInView:self.view];
}

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