objective-c - MPMoviePlayerController 关闭后顶部状态栏消失

Question

我的 iPhone 应用程序有一个有趣的小问题。我有一个带有表格的 View ，每个单元格在单击时全屏播放视频，然后当您按完成时，视频停止并返回到表格 View 。唯一的问题是，当您在视频加载的前 2 或 3 秒内按完成时，当 View 返回到表格 View 时，屏幕顶部显示时间和电池电量等的栏不再显示那里，它只是一个空白。但是如果你在前几秒后按下完成，那么当你回到表格 View 时，一切都很好!我完全不知道为什么会这样，我在互联网上唯一发现的是这个人和我有几乎完全相同的问题:

http://www.iphonedevsdk.com/forum/iphone-sdk-development/53020-disappearing-status-bar.html

这让我尝试使用:

[UIApplication sharedApplication].statusBarHidden = NO;

然而这也无济于事。

点击视频时执行的代码:

NSString *path = [[NSBundle mainBundle] pathForResource:currentTitle ofType:@"m4v"];
NSURL *url = [NSURL fileURLWithPath:path];
movieController = [[MPMoviePlayerController alloc] initWithContentURL:url];
[movieController setControlStyle:MPMovieControlStyleFullscreen];
[movieController setFullscreen:YES];
movieController.view.frame = self.view.bounds;
[self.view addSubview:movieController.view];

[[NSNotificationCenter defaultCenter]  addObserver:self selector:@selector(playbackFinished:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil];

当视频结束或用户点击完成时执行的代码是:

NSLog(@"movieController moviePlayBackDidFinish");
[[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:nil];

[movieController setFullscreen:NO animated:NO];
[movieController.view removeFromSuperview];

[movieController release];

LiveEventsView *liveEventsView = [[LiveEventsView alloc] initWithNibName:@"LiveEventsView" bundle:nil];
UIView *currentView = self.view;
UIView *theWindow = [currentView superview];
UIView *newView = liveEventsView.view;
newView.frame = CGRectMake(0, 20, 320, 460);
[currentView removeFromSuperview];
[theWindow addSubview:newView];
[UIApplication sharedApplication].statusBarHidden = NO;

如果有人能阐明这种情况，我将不胜感激，因为这非常令人沮丧!

谢谢，

马特

Answer 1

也许视频 View 消失时的动画导致状态栏动画出现时间问题。

尝试将 statusBarHidden = NO 调用延迟几秒钟。

NSInteger delay = 3;

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, delay * NSEC_PER_SEC), dispatch_get_current_queue(), ^{
[UIApplication sharedApplication].statusBarHidden = NO;
});