为什么 MPMoviePlayerController 在模拟器中有效，但在设备中无效？

发布于 2024-09-14 02:59:47 字数 1435 浏览 7 评论 0原文

我无法让 MPMoviePlayerController 在设备上运行。它在模拟器中运行良好，播放五秒视频，然后将适当的回调 (myMovieFinishedCallback:) 发送到视图控制器。当它在设备上运行时，电影永远不会显示，即使我可以毫无问题地通过 [player play] 进行跟踪。 myMovieFinishedCallback: 从未被调用，并且没有错误。所有正确的资源都被复制。知道发生了什么事吗？

这是我用来创建和使用播放器的代码，

更新：我已改用 MPMoviePlayerViewController。在设备上，电影仍然无法播放，我只是无限期地旋转进度轮。即使我将播放器设置为 MPMovieControlStyleNone，控件也会短暂闪烁 - 有人知道我该如何解决这个问题吗？影片时长 5 秒，大小约为 1.5 MB（如果有什么不同的话）。

更新：其他电影文件可以工作，但我不知道如何让我的文件工作。我已经尝试过将其作为 .mov 和 .mp4 进行使用，设置似乎是正确的。知道什么会导致 MPMoviePlayer 仅在设备上永远显示进度轮吗？

- (void) playMovie
{
    NSString *url = [[NSBundle mainBundle] 
                     pathForResource:@"myMovie" 
                     ofType:@"mp4"];

MPMoviePlayerViewController *playerViewController = 
[[MPMoviePlayerViewController alloc] 
 initWithContentURL:[NSURL fileURLWithPath:url]];

playerViewController.moviePlayer.controlStyle = MPMovieControlStyleNone;
playerViewController.moviePlayer.scalingMode = MPMovieScalingModeFill;

[[NSNotificationCenter defaultCenter] 
 addObserver:self
 selector:@selector(myMovieFinishedCallback:)
 name:MPMoviePlayerPlaybackDidFinishNotification
 object:[playerViewController moviePlayer]];

playerViewController.view.frame = movieView.frame;

[movieView addSubview:playerViewController.view];

//---play movie---
MPMoviePlayerController *player = [playerViewController moviePlayer];
[player play];
}

原文

I'm having trouble getting MPMoviePlayerController to work on the device. It runs fine in simulator, playing a five-second video and then sending the appropriate callback (myMovieFinishedCallback:) to the view controller. When it runs on the device, the movie never shows up, even though I can trace through [player play] with no problems. myMovieFinishedCallback: is never called, and there are no errors. All the right resources are being copied. Any idea what's going on?

Here's the code I use to create and use the player,

Update: I've switched over to using MPMoviePlayerViewController. On the device the movie still does not play, I just get the spinning progress wheel indefinitely. The controls also flash briefly even though I've set the player to MPMovieControlStyleNone - anybody know how I can fix this? The movie is five seconds and about 1.5 MB if that makes any difference.

Update: Other movie files work, but I can't figure out how to make mine work. I've tried it as a .mov and a .mp4 and the settings seem to be right. Any idea what would cause the MPMoviePlayer to show a progress wheel forever on the device only?

- (void) playMovie
{
    NSString *url = [[NSBundle mainBundle] 
                     pathForResource:@"myMovie" 
                     ofType:@"mp4"];

MPMoviePlayerViewController *playerViewController = 
[[MPMoviePlayerViewController alloc] 
 initWithContentURL:[NSURL fileURLWithPath:url]];

playerViewController.moviePlayer.controlStyle = MPMovieControlStyleNone;
playerViewController.moviePlayer.scalingMode = MPMovieScalingModeFill;

[[NSNotificationCenter defaultCenter] 
 addObserver:self
 selector:@selector(myMovieFinishedCallback:)
 name:MPMoviePlayerPlaybackDidFinishNotification
 object:[playerViewController moviePlayer]];

playerViewController.view.frame = movieView.frame;

[movieView addSubview:playerViewController.view];

//---play movie---
MPMoviePlayerController *player = [playerViewController moviePlayer];
[player play];
}

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