播放视频后更改视图

Question

当我点击我的播放按钮时，我的视频正常工作，我知道我的视图更改的代码有效。在我的视频完成播放后，我似乎无法改变视图，不知道出了什么问题。视频播放完毕后，有什么想法让视图改变吗？

我的电影代码

-(IBAction)playMovie:(id)sender {
NSString *movieUrl = [[NSBundle mainBundle] pathForResource:@"Movie_1666" ofType:@"m4v"]; 
playerController = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL fileURLWithPath:movieUrl]];
//Smoothe Transition
//[self presentMoviePlayerViewControllerAnimated:playerController];
//Instant Transistion
[self presentModalViewController:playerController animated:NO];
playerController.moviePlayer.movieSourceType = MPMovieSourceTypeFile;
playerController.moviePlayer.scalingMode = MPMovieScalingModeAspectFill;
playerController.moviePlayer.controlStyle = MPMovieControlStyleNone;
[playerController.moviePlayer play];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playbackFinished:) name:MPMoviePlayerPlaybackDidFinishNotification object:playerController]; }

我改变观点的方法

- (void)playbackFinished:(NSNotification*) notification {
MPMoviePlayerController *playerController = [notification object];
[[NSNotificationCenter defaultCenter] 
 removeObserver:self
 name:MPMoviePlayerPlaybackDidFinishNotification
 object:playerController];

View2 *view2 = [[View2 alloc] initWithNibName:@"View2" bundle:nil];
View2.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentModalViewController:view2 animated:YES]; }

编辑： 我的通知对象错误，并没有触发我的playbackFinished方法 这一变化解决了这个问题。

- (void)playbackFinished:(NSNotification*) notification {
playerController = [notification object];
[[NSNotificationCenter defaultCenter] 
 removeObserver:self
 name:MPMoviePlayerPlaybackDidFinishNotification
 object:playerController];

我也把它放在我的头文件中，使其在我的playbackFinished方法中使用全局

MPMoviePlayerViewController *playerController;

Answer 1

电影播放结束后，在没有动画的情况下关闭playerController视图。还要检查是否在主线程中显示View2。

修改 通过

关闭playerController

[playerController dismissModalViewControllerAnimated:NO];