Question

我必须在应用启动时显示一个小的介绍视频，我也必须显示启动画面（DEFAULT.png）。所以在我的第一个视图控制器的viewDidLoad中我做了：

    NSURL * movieUrl = [[NSURL alloc] initFileURLWithPath: [[NSBundle mainBundle] pathForResource:@"movie" ofType:@"mp4"]];
    self.playerController = [[MPMoviePlayerViewController alloc]initWithContentURL:movieUrl];

    //Fit the screen
    self.playerController.view.frame = CGRectMake(0, -20, 320, 480);

    //Hide video controls
    self.playerController.moviePlayer.controlStyle = MPMovieControlStyleNone;

    //Play as soon as loaded
    self.playerController.moviePlayer.shouldAutoplay = YES;


    //Add the video as the first view background
    [self.view addSubview:playerController.moviePlayer.view];

但是，通过此实现，当视图中添加了播放器视图时，始终会出现黑色闪烁。有没有办法避免黑色闪光？

Answer 1

不是在firstViewController中呈现playerController，而是在appDelegate中处理它并将其呈现在窗口的rootViewController上。

NSURL * movieUrl = [[NSURL alloc] initFileURLWithPath: [[NSBundle mainBundle] pathForResource:@"movie" ofType:@"mp4"]];
self.playerController = [[MPMoviePlayerViewController alloc]initWithContentURL:movieUrl];

//Fit the screen
self.playerController.view.frame = CGRectMake(0, -20, 320, 480);

//Hide video controls
self.playerController.moviePlayer.controlStyle = MPMovieControlStyleNone;

//Play as soon as loaded
self.playerController.moviePlayer.shouldAutoplay = YES;

[self.window.rootViewController presentModalViewController:self.playerController animated:NO];

确保以无动画呈现它。

Answer 2

我认为没有办法避免这种情况，因为当应用程序尝试执行此行时，屏幕会闪烁黑色：

[self.view addSubview:playerController.moviePlayer.view];

OR

[self.window.rootViewController presentModalViewController:self.playerController animated:NO];

所以我认为在执行时你无能为力。

在应用启动时显示介绍视频

2 个答案: