MPMoviePlayerViewController 从文档目录播放电影 - Objective-c

发布于 2024-12-06 04:43:35 字数 559 浏览 0 评论 0原文

我在文档文件夹中有一个名为“视频”的子文件夹。还有一些video.mp4文件。我有此文件的完整路径，但 MPMoviePlayerViewController 不想从本地播放视频。这是代码：

NSString *path = [[self getVideoFolderPath] stringByAppendingPathComponent:@"somevideo.mp4"];
NSURL *fURL = [NSURL fileURLWithPath:path];
MPMoviePlayerViewController *videoPlayerView = [[MPMoviePlayerViewController alloc] initWithContentURL:fURL];
[self presentMoviePlayerViewControllerAnimated:videoPlayerView];
[videoPlayerView.moviePlayer play];

它不播放。出现白屏，没有其他内容。当我将 URL 放入包含视频文件的网站时，此代码适用于远程视频，但本地无法播放。如何获取视频文件的正确文件路径？

原文

I have subfolder called "Video" in Documents folder. And there is somevideo.mp4 file. I have full path to this file but MPMoviePlayerViewController doesn't want to play video from local. Here is code:

NSString *path = [[self getVideoFolderPath] stringByAppendingPathComponent:@"somevideo.mp4"];
NSURL *fURL = [NSURL fileURLWithPath:path];
MPMoviePlayerViewController *videoPlayerView = [[MPMoviePlayerViewController alloc] initWithContentURL:fURL];
[self presentMoviePlayerViewControllerAnimated:videoPlayerView];
[videoPlayerView.moviePlayer play];

It doesn't play. Appears white screen and nothing else. This code works with remote video, when i put URL to website with video file, but local doesn't play. How to get correct file path to video file?

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兔姬 2024-12-13 04:43:35

您使用的是 4.3 之前的 iOS 系统吗？如果是这样，您需要执行此操作

[videoPlayerView setContentURL: fURL];

这是我从文档文件夹中播放视频的代码片段。我建议的一件事是避免某些自动释放对象。特别是当你有视图控制器时，在 NSURL 上。我知道它应该是安全的，但我从未发现它是 100%

if ( [[NSFileManager defaultManager] fileExistsAtPath:fullpathVideoFile] == NO )
    {
    NSLog(@"No video file found");
    return self;
    }

playbackURL = [[NSURL alloc] initFileURLWithPath:fullpathVideoFile isDirectory:NO];

if ( playbackURL == nil )
    {
    NSLog(@"playbackURL == nil");
    return self;
    }

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerLoadedMovie:) name:@"MPMoviePlayerLoadStateDidChangeNotification" object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerStartedMovie:) name:@"MPMoviePlayerNowPlayingMovieDidChangeNotification" object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerFinishedMovie:) name:@"MPMoviePlayerPlaybackDidFinishNotification" object:nil];

[self setContentURL:playbackURL];

在我的例子中，我创建了 MPMoviePlayerController 的子类（就像我通常对所有视图控制器所做的那样），因此对“self”的引用将是 MPMoviePlayerController 对象实例

Are you using iOS prior to 4.3? If so, you need to do this

[videoPlayerView setContentURL: fURL];

Here is a snippet of code from where I play video from the documents folder. One of the things I would recommend is to avoid some of the autorelease objects. Especially on NSURL when you have viewcontrollers. I know it should be safe but I've never found it to be 100%

if ( [[NSFileManager defaultManager] fileExistsAtPath:fullpathVideoFile] == NO )
    {
    NSLog(@"No video file found");
    return self;
    }

playbackURL = [[NSURL alloc] initFileURLWithPath:fullpathVideoFile isDirectory:NO];

if ( playbackURL == nil )
    {
    NSLog(@"playbackURL == nil");
    return self;
    }

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerLoadedMovie:) name:@"MPMoviePlayerLoadStateDidChangeNotification" object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerStartedMovie:) name:@"MPMoviePlayerNowPlayingMovieDidChangeNotification" object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayerFinishedMovie:) name:@"MPMoviePlayerPlaybackDidFinishNotification" object:nil];

[self setContentURL:playbackURL];

In my case, I created a subclass of MPMoviePlayerController (as I generally do with all view controllers) so the references to 'self' would be to the MPMoviePlayerController object instance

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