在iOS 7中显示带有声音的黑屏的MPMoviePlayerController，在iOS 6中运行良好

// introVideoViewController

#import <AVFoundation/AVAudioSession.h> #import <AudioToolbox/AudioServices.h> #import <AVFoundation/AVAudioPlayer.h> #import <MediaPlayer/MediaPlayer.h> @property(nonatomic,strong) MPMoviePlayerController *playercontroller; 

嗨，大家好，

有人知道在iOS 7中我可以听到我的video声音，但不是video，它在iOS 6中工作正常。

任何意见，不胜感激。

// introVideoViewController

 //prepare & init video -(void)prepareIntroVideo { NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"intro_movie" ofType:@"mp4"]]; //NSURL *url = [NSURL URLWithString:@"http://km.support.apple.com/library/APPLE/APPLECARE_ALLGEOS/HT1211/sample_iTunes.mov"]; self.playercontroller = [[MPMoviePlayerController alloc] initWithContentURL:url]; [self.playercontroller.view setFrame:CGRectMake(0, 0, 320,480)]; self.playercontroller.movieSourceType = MPMovieSourceTypeFile; self.playercontroller.scalingMode = MPMovieScalingModeAspectFill; self.playercontroller.fullscreen = YES; self.playercontroller.controlStyle = MPMovieControlStyleNone; //playercontroller.controlStyle = MPMovieControlStyleFullscreen; self.playercontroller.view.userInteractionEnabled =NO; self.playercontroller.view.backgroundColor = [UIColor blackColor]; self.playercontroller.shouldAutoplay = NO; //playercontroller.repeatMode = YES; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlaybackComplete:) name:MPMoviePlayerPlaybackDidFinishNotification object:self.playercontroller]; [self.playercontroller prepareToPlay]; [self.view addSubview:self.playercontroller.view]; // get the handle // Get the result self.firstlaunchVideoCheck = [self.defaults stringForKey:@"firstlaunchVideo"]; //NSLog(@"first launch null or 1 = %@",firstlaunchVideoCheck); if ([self.firstlaunchVideoCheck intValue]) { //skip view overlay UIView *skipView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 480)]; UITapGestureRecognizer *singleTapping = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(showSkipButton)]; singleTapping.delegate =self; singleTapping.numberOfTapsRequired = 1; [skipView addGestureRecognizer:singleTapping]; singleTapping.cancelsTouchesInView = NO; //skipbutton self.skipMovieButton = [UIButton buttonWithType:UIButtonTypeCustom]; //0, 276, 480, 54) if (isPhone568) { [self.skipMovieButton setFrame:CGRectMake(227, 504, 92, 44)]; } else { [self.skipMovieButton setFrame:CGRectMake(227, 436, 92, 44)]; } [self.skipMovieButton setBackgroundColor:[UIColor clearColor]]; UIImage *skipMovieButtonNormal = [UIImage imageNamed:@"button_skip.png"]; //UIImage *skipMovieButtonPress = [UIImage imageNamed:@"skip-(active).png"]; [self.skipMovieButton setBackgroundImage:skipMovieButtonNormal forState:UIControlStateNormal]; //[self.skipMovieButton setBackgroundImage:skipMovieButtonPress forState:UIControlStateHighlighted]; [self.skipMovieButton addTarget:self action:@selector(skipMovie) forControlEvents:UIControlEventTouchUpInside]; [skipView addSubview:self.skipMovieButton]; [self.view addSubview:skipView]; } [self.playercontroller stop]; [self.view bringSubviewToFront:self.titleImgView]; [self.view bringSubviewToFront:self.startMovieButton]; [self.view sendSubviewToBack:self.playercontroller.view]; [self.view sendSubviewToBack:self.skipMovieButton]; } //play video -(void)playIntroVideo { NSLog(@"self.playercontroller.playbackState %i",self.playercontroller.playbackState); if (self.playercontroller.playbackState == MPMoviePlaybackStatePlaying) { NSLog(@"playerconroller playing, do nothing"); } else if (self.playercontroller.playbackState == MPMoviePlaybackStateStopped) { NSLog(@"playerconroller playing, do nothing11111111111"); [self.playercontroller play]; } } //called when video played completed - (void)moviePlaybackComplete:(NSNotification *)notification { ////NSLog(@"Here Got Called"); MPMoviePlayerController *moviePlayerController = [notification object]; [[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayerController]; //[playercontroller.view removeFromSuperview]; [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationDidEnterBackgroundNotification object:[UIApplication sharedApplication]]; [[NSNotificationCenter defaultCenter] removeObserver:self name:UIApplicationWillEnterForegroundNotification object:[UIApplication sharedApplication]]; if (![self.firstlaunchVideoCheck intValue]) { self.firstlaunchVideoCheck = @"1"; // get the handle [self.defaults setObject:self.firstlaunchVideoCheck forKey:@"firstlaunchVideo"]; // save it [self.defaults synchronize]; } [self skipMovie]; } 

Answer 1

所有工作正常之后再添加一行。

 self.playercontroller.contentURL = url;