iOS无法播放视频

我试图在视图加载时播放一个简单的mp4文件全屏。这里是代码：iOS无法播放视频

我没有得到一个视频，但我知道viewDidLoad被调用，并且存在一个视图。

// 
// FirstViewController.m 
// WSTR Finale 
// 
// Created by Chris Muench on 10/6/14. 
// Copyright (c) 2014 World Series of Team Roping. All rights reserved. 
// 

#import "WatchLiveViewController.h" 
#import <MediaPlayer/MediaPlayer.h> 

@interface WatchLiveViewController() 

@end 

@implementation WatchLiveViewController 

- (void)viewDidLoad { 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
    NSURL *movieURL = [NSURL URLWithString:@"http://download.wavetlan.com/SVV/Media/HTTP/H264/Talkinghead_Media/H264_test1_Talkinghead_mp4_480x360.mp4"]; 
    MPMoviePlayerController *moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:movieURL]; 
    moviePlayer.controlStyle = MPMovieControlStyleFullscreen; 
    moviePlayer.view.transform = CGAffineTransformConcat(moviePlayer.view.transform, CGAffineTransformMakeRotation(M_PI_2)); 
    UIWindow *backgroundWindow = [[UIApplication sharedApplication] keyWindow]; 
    [moviePlayer.view setFrame:backgroundWindow.frame]; 
    [backgroundWindow addSubview:moviePlayer.view]; 
    [moviePlayer play]; 
} 

- (void)didReceiveMemoryWarning { 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 

@end

来源

2014-10-07 Chris Muench

是否没有变换工作？您应该考虑使用backgroundWindow.bounds而不是.frame来避免重复偏移。 – 2014-10-07 15:56:11

我确定在将实际视图控制器放入导航堆栈之前，您已经知道“框架”和“边界”属性是未定义的（甚至可能是CGRectNull） - 并且调用了“-viewDidLoad”方法绝对_before_。 – holex 2014-10-07 16:02:57

我试图改变它viewDidAppear现在我只是得到一个大的黑色屏幕没有任何视频控制器或视频 – 2014-10-07 16:05:11

试试这个代码：

MPMoviePlayerViewController *mpvController = [[MPMoviePlayerViewController alloc] initWithContentURL:movieURL]; 
mpvController.moviePlayer.controlStyle = MPMovieControlStyleFullscreen; 
mpvController.moviePlayer.scalingMode = MPMovieScalingModeFill; 
mpvController.view.transform = CGAffineTransformConcat(mpvController.view.transform, CGAffineTransformMakeRotation(M_PI_2)); 
[self presentViewController:mpvController animated:NO completion:^{ 
    [mpvController.moviePlayer play]; 
}];

来源

2014-10-07 16:56:28 gabbler

作品非常感谢！ – 2014-10-07 17:15:26

你可以在肖像中做这个戏吗？ – 2014-10-07 17:18:14

是的，注释掉mpvController.view.transform行 – gabbler 2014-10-07 17:33:42

我想你是失踪prepareToPlay。尝试是这样的：

... 
[moviePlayer prepareToPlay]; 
[moviePlayer play];

来源

2014-10-07 15:56:58 freshking

我试过，但它仍然没有播放......只是一个空视图 – 2014-10-07 16:03:45

我也试图改变它以查看出现，现在我只是得到一个大的黑色屏幕没有任何视频控制器或视频 – 2014-10-07 16:05:29

iOS无法播放视频

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