Question

首次尝试将视频集成到应用中。我已经按照了几本教程和一本书中的代码进行了操作，但我只是得到一个没有视频的空白屏幕（或其他任何内容）。我还应该提一下，我试图在模拟器中运行它，如果这很重要的话。

我在我的Build Phases中将MediaPlayer.framework链接为二进制库。这是我的代码：

我无法理解我在俯视什么。谁能看到它？谢谢！

MoviePlayerViewController.h

#import <UIKit/UIKit.h>
#import <MediaPlayer/MediaPlayer.h>

@interface MoviePlayerViewController : UIViewController

@end

MoviePlayerViewController.m

#import "MoviePlayerViewController.h"

@interface MoviePlayerViewController ()

@end

@implementation MoviePlayerViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    NSURL *url=[[NSURL alloc] initWithString:@"http://www.ebookfrenzy.com/ios_book/movie/movie.mov"];

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

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

    moviePlayer.controlStyle = MPMovieControlStyleDefault;
    moviePlayer.shouldAutoplay = YES;
    [self.view addSubview:moviePlayer.view];
    [moviePlayer setFullscreen:YES animated:YES];
}

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

//    MPMoviePlayerController *player = [notification object];
//    
//    [[NSNotificationCenter defaultCenter] removeObserver:self
//                                                    name:MPMoviePlayerPlaybackDidFinishNotification
//                                                  object:player];
//    
//    if ([player respondsToSelector:@selector(setFullscreen:animated:)])
//    {
//        [player.view removeFromSuperview];
//    }
}

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

@end

Answer 1

（1）尝试将电影源类型指定为流媒体：

moviePlayer.movieSourceType = MPMovieSourceTypeStreaming;

（2）即使它处于全屏模式，我认为你必须为你的播放器设置一个初始帧，例如，如果你想让它占据全屏模式：

[moviePlayer.view setFrame:self.view.bounds];

Answer 2

尝试使用moviePlayer变量是iVar

NSURL *movieURL = [NSURL URLWithString:@"http://www.ebookfrenzy.com/ios_book/movie/movie.mov"];
self.moviePlayer = [[MPMoviePlayerController alloc] init];
[self.moviePlayer setShouldAutoplay:YES];
[self.moviePlayer setContentURL:movieURL.absoluteURL];
[self.moviePlayer setMovieSourceType:MPMovieSourceTypeFile];
[self.moviePlayer setControlStyle:MPMovieControlModeDefault];
[self.moviePlayer setFullscreen:NO];

[self.moviePlayer setScalingMode:MPMovieScalingModeNone];
self.moviePlayer.view.frame = CGRectMake(40, 40, 240, 350);
[self.view addSubview:self.moviePlayer.view];
[self.moviePlayer prepareToPlay];
[self.moviePlayer play];

iOS视频无法播放

2 个答案: