如何從目錄中讀取文件

我收到了一個其他人寫的項目。該項目保存視頻文件在這條路徑，file://localhost/var/mobile/Applications/CAC8F2CB-1C7D-4805-BF1A-42B63B258E95/Documents/output.mp4 如何從目錄中讀取文件

我想用MPMoviePlayerController播放文件，我如何訪問該文件？

來源

2013-02-19 or azran

Firslty加載路徑和文件網址：

NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; 

NSString *localFilePath = [photoDirectoryPath stringByAppendingPathComponent:@"output.mp4"];

然後加載MPMoviePlayerController與U RL

- (void)initMoviePlayer 
{ 
didExit = NO; 

[[NSNotificationCenter defaultCenter] addObserver:self 
             selector:@selector(moviePreloadDidFinish:) 
              name:MPMoviePlayerLoadStateDidChangeNotification 
              object:mMoviePlayer]; 

[[NSNotificationCenter defaultCenter] addObserver:self 
             selector:@selector(moviePlayBackDidFinish:) 
              name:MPMoviePlayerPlaybackDidFinishNotification 
              object:nil]; 

NSLog(@"initMoviePlayer: %@ ",[self getMovieURL]); 

mMoviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:[self getMovieURL]]; 

mMoviePlayer.shouldAutoplay = YES; 

mMoviePlayer.view.hidden = YES; 

[mMoviePlayer setControlStyle:MPMovieControlStyleNone]; 

mMoviePlayer.view.frame = [self.view bounds]; 

mMoviePlayer.scalingMode = MPMovieScalingModeNone; 

[[self view] addSubview:[mMoviePlayer view]]; 

[mMoviePlayer play]; 

} 

- (void) moviePreloadDidFinish:(NSNotification*)notification { 

// start playing the movie 

    mMoviePlayer.view.hidden = NO; 

    animateTimer = [NSTimer scheduledTimerWithTimeInterval:0.5 
               target:self 
               selector:@selector(playMovie:) 
               userInfo:nil 
               repeats:NO]; 
} 

- (void) moviePlayBackDidFinish:(NSNotification*)notification 
{   

}

來源

2013-02-19 09:10:07 Dev2rights

感謝您的嘗試，但電影不播放 – 2013-02-19 09:33:41

編輯：我也只是測試了上述，它工作正常。 – Dev2rights 2013-02-19 09:40:39

不工作我越來越我得到一個錯誤 errorLog MPMovieFinishReasonPlaybackError – 2013-02-19 12:27:06

試試這個： -

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *documentsDirectory = [paths objectAtIndex:0]; 
NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:@"output.mp4"];

在這裏，在fullPath，你將有你上面提到的路徑。

有關如何播放視頻更詳細，請參閱this tutorial

希望這有助於你..

來源

2013-02-19 08:52:29

？ – 2013-02-19 09:31:49

@MidhunMP其實我有用於播放許多視頻的整數變量，無論如何編輯答案。謝謝:) – 2013-02-19 09:52:54

試試這個代碼的隊友，

NSString *documentDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES) objectAtIndex:0]; 

NSString *videoFilePath = [documentDirectory stringByAppendingPathComponent:@"output.mp4"]; 
    NSURL *videoURL = [NSURL URLWithString:videoFilePath]; 

MPMoviePlayerController *moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];

來源

2013-02-19 08:56:21

如果存儲上面的網址某處

NSString *fullURL = @"/var/mobile/Applications/CAC8F2CB-1C7D-4805-BF1A-42B63B258E95/Documents/output.mp4" 
NSURL *movieURL = [NSURL fileURLWithPath: isDirectory:YES]; //If YES not works use NO 
MPMoviePlayerController *player = [[MPMoviePlayerController alloc] initWithContentURL:movieURL];

希望你爲什麼要使用`stringWithFormat`，幫助

來源

2013-02-19 10:01:37

如何從目錄中讀取文件

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