关闭时横向 MPMoviePlayerViewController 纵向

Posted 2023-03-07

【中文标题】关闭时横向 MPMoviePlayerViewController 纵向

【英文标题】：MPMoviePlayerViewController in Landscape when dismissed Portrait

【发布时间】：2014-07-16 19:49:08

【问题描述】：

我有一个仅用于 PortraitMode 的 TableViewController。现在我想在触摸单元格时播放视频。 在我的 App Delegate 中，我正在使用以下方法：

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window 

if ([[self.window.rootViewController presentedViewController] isKindOfClass:[MPMoviePlayerViewController class]]) 
    NSLog(@"ja1");
    return UIInterfaceOrientationMaskAllButUpsideDown;
 else 
    if ([[self.window.rootViewController presentedViewController] isKindOfClass:[UINavigationController class]]) 
        NSLog(@"ja2");

        // look for it inside UINavigationController
        UINavigationController *nc = (UINavigationController *)[self.window.rootViewController presentedViewController];

        // is at the top?
        if ([nc.topViewController isKindOfClass:[MPMoviePlayerViewController class]]) 
            NSLog(@"ja3");
            return UIInterfaceOrientationMaskAllButUpsideDown;

            // or it's presented from the top?
         else if ([[nc.topViewController presentedViewController] isKindOfClass:[MPMoviePlayerViewController class]]) 
            NSLog(@"ja4");
            return UIInterfaceOrientationMaskAllButUpsideDown;
        
    

return UIInterfaceOrientationMaskPortrait;

可以在观看视频时转为横向。

我从我的 TableView 中显示 MPMoviePlayerViewController 的一个实例

- (void)playVideo 
NSURL *movieURL = [NSURL URLWithString:MYURL];
MPMoviePlayerViewController *c = [[MPMoviePlayerViewController alloc] initWithContentURL:movieURL];

// Remove the movie player view controller from the "playback did finish" notification observers
[[NSNotificationCenter defaultCenter] removeObserver:c
                                                name:MPMoviePlayerPlaybackDidFinishNotification
                                              object:c.moviePlayer];

// Register this class as an observer instead
[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(movieFinishedCallback:)
                                             name:MPMoviePlayerPlaybackDidFinishNotification
                                           object:c.moviePlayer];

// Set the modal transition style of your choice
c.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;

// Present the movie player view controller
[self presentViewController:c animated:YES completion:^];

// Start playback
[c.moviePlayer prepareToPlay];
[c.moviePlayer play];

现在我遇到了一个问题，当我在横向模式下关闭 MPMoviePlayerViewController 时，我想将它旋转回纵向模式。但我的 MasterViewController (=TableView) 仍处于横向模式。

你能帮帮我吗！

【问题讨论】：

你有没有想过这个问题？

【参考方案1】：

在您的 MasterViewController 中实现以下定向方法。这将使您的 MasterViewController 保持纵向。

- (BOOL)shouldAutorotate
    return false;

- (NSUInteger)supportedInterfaceOrientations

    return UIInterfaceOrientationMaskPortrait;

// Returns interface orientation masks.
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
  
    return UIInterfaceOrientationPortrait;