MPMoviePlayerController 无法从 Documents 文件夹播放答案

【问题标题】：MPMoviePlayerController doesn't play from Documents folderMPMoviePlayerController 无法从 Documents 文件夹播放
【发布时间】：2012-09-28 13:59:51
【问题描述】：

绝望了。大家好！我遇到了 MPMoviePlayerController 的一些问题。我已经使它与来自 NSBundle 的视频一起工作。但这不是我需要的。我需要从 Documents 目录播放它，因为那是我存储录制视频的地方，而 URL 存储在 CoreData 中。但是让我们把它放在一边，并将代码简化到所需的最低限度。如果使用 contentURL，此代码实际上可以工作，这会导致 NSBundle。之后，我要做什么才能到达文档位置。我做什么：

    NSURL *contentURL = [[NSBundle mainBundle] URLForResource:@"Oct_08_2012_10_00_51" withExtension:@"mp4"]; // this works
NSString* docPath = [NSSearchPathForDirectoriesInDomains
                     (NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString * docaPathFull = [NSString stringWithFormat:@"%@%@", docPath, @"/Oct_08_2012_10_00_51.mp4"];
NSURL * docUrl= [NSURL URLWithString: docaPathFull];
BOOL ex = [[NSFileManager defaultManager] fileExistsAtPath:docaPathFull];
NSLog(@"file exists: %d, path using docPath: %@",ex, docaPathFull);
MPMoviePlayerController *player = [[MPMoviePlayerController alloc] initWithContentURL:docUrl];
player.shouldAutoplay = YES;
player.controlStyle = MPMovieControlStyleEmbedded;
[player.view setFrame: self.thumbButton.bounds];
[player prepareToPlay];
[self.view addSubview: player.view];
[player play];

我们有什么：

2012-10-08 13:14:43.532 Voto[11968:907] file exists: 1, path using docPath: /var/mobile/Applications/07B8574A-A3BA-4B23-BB3F-995B33A01B95/Documents/Oct_08_2012_10_00_51.mp4
2012-10-08 13:14:43.907 Voto[11968:907] content URL: file://localhost/var/mobile/Applications/07B8574A-A3BA-4B23-BB3F-995B33A01B95/Voto.app/Oct_08_2012_10_00_51.mp4
2012-10-08 13:14:44.265 Voto[11968:907] doc URL: /var/mobile/Applications/07B8574A-A3BA-4B23-BB3F-995B33A01B95/Documents/Oct_08_2012_10_00_51.mp4
2012-10-08 13:14:45.343 Voto[11968:907] [MPAVController] Autoplay: Disabling autoplay for pause
2012-10-08 13:14:45.344 Voto[11968:907] [MPAVController] Autoplay: Disabling autoplay
2012-10-08 13:14:46.518 Voto[11968:907] [MPAVController] Autoplay: Skipping autoplay, disabled (for current item: 1, on player: 0)
2012-10-08 13:14:46.540 Voto[11968:907] [MPAVController] Autoplay: Enabling autoplay
2012-10-08 13:14:46.554 Voto[11968:907] [MPAVController] Autoplay: Likely to keep up or full buffer: 0
2012-10-08 13:14:46.555 Voto[11968:907] [MPAVController] Autoplay: Skipping autoplay, not enough buffered to keep up.
2012-10-08 13:14:46.557 Voto[11968:907] [MPAVController] Autoplay: Enabling autoplay
2012-10-08 13:14:46.567 Voto[11968:907] [MPCloudAssetDownloadController] Prioritization requested for media item ID: 0
2012-10-08 13:14:46.871 Voto[11968:907] [MPAVController] Autoplay: Enabling autoplay

所以，文件存在... 我看过的问题：

MPMoviePlayer load and play movie saved in app documents

MPMoviePlayerController does not work with movie in documents folder

MPMoviePlayerViewController play movie from Documents directory - objective-c

我还检查了类参考，没有关于从 Documents 播放的具体内容。我的项目设置：使用最新的 iOS 6，部署目标 5.0 在 iOS6 iPhone 模拟器和装有 iOS 6 的 iPad 上进行测试。如果我忘记添加东西，请提醒我，我会立即添加。

请帮忙！ :)

【问题讨论】：

标签： ios mpmovieplayercontroller nsurl nsdocumentdirectory

【解决方案1】：

你没有以正确的方式构建文件 URL，你应该这样做：

NSString *docPath = [NSSearchPathForDirectoriesInDomains
                     (NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *docaPathFull = [docPath stringByAppendingPathComponent:@"/Oct_08_2012_10_00_51.mp4"];
NSURL *docUrl= [NSURL fileURLWithPath:docaPathFull];

您应该使用NSString 的stringByAppendingPathComponent 方法将目录和文件添加到路径；此外，在创建文件 URL 时，在 NSURL 上使用 fileURLWithPath:，这将为给定路径创建一个正确的 NSURL。

【讨论】：

好吧，伙计们，这些答案当然值得赞许和尊重。谢谢。
@Dumoko ...当然，我的朋友...当之无愧...我就是这么做的

【解决方案2】：

每个人最常犯的错误就是都使用

NSURL *fileURL = [NSURL URLWithString:mVidPath];
                        ^^^^^^^^^^^^^

而不是

NSURL *fileURL = [NSURL fileURLWithPath:mVidPath];
                        ^^^^^^^^^^^^^^^

【讨论】：

你应该得到更多像先生！

【解决方案3】：

-(IBAction)playVideo
{
NSURL *vedioURL;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSArray *filePathsArray = [[NSFileManager defaultManager] subpathsOfDirectoryAtPath:documentsDirectory  error:nil];
NSLog(@"files array %@", filePathsArray);        
NSString *fullpath;
for ( NSString *apath in filePathsArray )
{
    fullpath = [documentsDirectory stringByAppendingPathComponent:apath];       
    vedioURL =[NSURL fileURLWithPath:fullpath];
}
NSLog(@"vurl %@",vedioURL);
MPMoviePlayerViewController *player = [[MPMoviePlayerViewController alloc] initWithContentURL:vedioURL];
[player.view setFrame: self.view.bounds];
[player.moviePlayer prepareToPlay];
[self.view addSubview:player.view];
player.moviePlayer.controlStyle = MPMovieControlStyleDefault;
player.moviePlayer.shouldAutoplay = YES;
[player.moviePlayer setFullscreen:YES animated:YES];
[player.moviePlayer play];
[self presentMoviePlayerViewControllerAnimated: player];
}

不要忘记添加 MediaPlayer.framework 和 #import 在您各自的代码中。祝你好运！！！

【讨论】：