iPhone SDK：你如何在视图中播放视频？而不是全屏

Question

我正在尝试在UIView内播放视频，所以我的第一步是为该视图添加一个类，并使用此代码开始在其中播放电影：

- (IBAction)movie:(id)sender{
    NSBundle *bundle = [NSBundle mainBundle];
        NSString *moviePath = [bundle pathForResource:@"Movie" ofType:@"m4v"];
    NSURL *movieURL = [[NSURL fileURLWithPath:moviePath] retain];
    MPMoviePlayerController *theMovie = [[MPMoviePlayerController alloc] initWithContentURL:movieURL];
    theMovie.scalingMode = MPMovieScalingModeAspectFill;
    [theMovie play];
}

但是这只是在它自己的类中使用这个方法时崩溃应用程序，但在其他地方很好。有谁知道如何在视图中播放视频？并避免全屏？

Answer 1

从3.2 SDK开始，您可以访问MPMoviePlayerController的view属性，修改其框架并将其添加到视图层次结构中。

MPMoviePlayerController *player = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL fileURLWithPath:url]];
player.view.frame = CGRectMake(184, 200, 400, 300);
[self.view addSubview:player.view];
[player play];

这里有一个例子：http://www.devx.com/wireless/Article/44642/1954

Answer 2

最好的方法是使用图层而不是视图：

AVPlayer *player = [AVPlayer playerWithURL:[NSURL url...]]; // 

AVPlayerLayer *layer = [AVPlayerLayer layer];

[layer setPlayer:player];
[layer setFrame:CGRectMake(10, 10, 300, 200)];
[layer setBackgroundColor:[UIColor redColor].CGColor];
[layer setVideoGravity:AVLayerVideoGravityResizeAspectFill];

[self.view.layer addSublayer:layer];

[player play];

不要忘记添加框架：

#import <QuartzCore/QuartzCore.h>
#import "AVFoundation/AVFoundation.h"

Answer 3

查看代码，您需要设置影片播放器控制器视图的框架，并将影片播放器控制器的视图添加到视图中。另外，不要忘记将 MediaPlayer.framework 添加到目标。

以下是一些示例代码：

#import <MediaPlayer/MediaPlayer.h>

@interface ViewController () {
    MPMoviePlayerController *moviePlayerController;
}

@property (weak, nonatomic) IBOutlet UIView *movieView; // this should point to a view where the movie will play

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    // Instantiate a movie player controller and add it to your view
    NSString *moviePath = [[NSBundle mainBundle] pathForResource:@"foo" ofType:@"mov"];
    NSURL *movieURL = [NSURL fileURLWithPath:moviePath];    
    moviePlayerController = [[MPMoviePlayerController alloc] initWithContentURL:movieURL];
    [moviePlayerController.view setFrame:self.movieView.bounds];  // player's frame must match parent's
    [self.movieView addSubview:moviePlayerController.view];

    // Configure the movie player controller
    moviePlayerController.controlStyle = MPMovieControlStyleNone;        
    [moviePlayerController prepareToPlay];
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];

    // Start the movie
    [moviePlayerController play];
}

@end

Answer 4

夫特

这是一个自包含项目，因此您可以在上下文中查看所有内容。

布局

使用UIView和UIButton创建如下布局。 UIView将是我们播放视频的容器。

将视频添加到项目

如果您需要使用示例视频进行练习，可以从sample-videos.com获取一个。我在这个例子中使用的是mp4格式的视频。将视频文件拖放到项目中。我还必须将其明确添加到捆绑资源中（转到构建阶段＆gt;复制捆绑资源，有关详细信息，请参阅this answer。）

代码

以下是该项目的完整代码。

import UIKit
import AVFoundation

class ViewController: UIViewController {

    var player: AVPlayer?

    @IBOutlet weak var videoViewContainer: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()
        initializeVideoPlayerWithVideo()
    }

    func initializeVideoPlayerWithVideo() {

        // get the path string for the video from assets
        let videoString:String? = Bundle.main.path(forResource: "SampleVideo_360x240_1mb", ofType: "mp4")
        guard let unwrappedVideoPath = videoString else {return}

        // convert the path string to a url
        let videoUrl = URL(fileURLWithPath: unwrappedVideoPath)

        // initialize the video player with the url
        self.player = AVPlayer(url: videoUrl)

        // create a video layer for the player
        let layer: AVPlayerLayer = AVPlayerLayer(player: player)

        // make the layer the same size as the container view
        layer.frame = videoViewContainer.bounds

        // make the video fill the layer as much as possible while keeping its aspect size
        layer.videoGravity = AVLayerVideoGravity.resizeAspectFill

        // add the layer to the container view
        videoViewContainer.layer.addSublayer(layer)
    }

    @IBAction func playVideoButtonTapped(_ sender: UIButton) {
        // play the video if the player is initialized
        player?.play()
    }
}

备注

• 如果您要切换不同的视频，可以使用AVPlayerItem。
• 如果您只使用AVFoundation和AVPlayer，那么您必须构建所有自己的控件。如果您想要全屏视频播放，可以使用AVPlayerViewController。您需要导入AVKit。它配备了一整套用于暂停，快进，快退，停止等的控件。Here和here是一些视频教程。
您可能已在其他答案中看到的
• MPMoviePlayerController已被弃用。

结果

项目现在应该是这样的。

Answer 5

NSString * pathv = [[NSBundle mainBundle] pathForResource:@"vfile" ofType:@"mov"];
playerv = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL fileURLWithPath:pathv]];

[self presentMoviePlayerViewControllerAnimated:playerv];

Answer 6

NSURL *url = [NSURL URLWithString:[exreciesDescription objectForKey:@"exercise_url"]];
moviePlayer =[[MPMoviePlayerController alloc] initWithContentURL: url];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(doneButtonClicked) name:MPMoviePlayerWillExitFullscreenNotification object:nil];
[[moviePlayer view] setFrame: [self.view bounds]];  // frame must match parent view
[self.view addSubview: [moviePlayer view]];
[moviePlayer play];

-(void)playMediaFinished:(NSNotification*)theNotification 
{
    moviePlayer=[theNotification object];
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:MPMoviePlayerPlaybackDidFinishNotification
                                                  object:moviePlayer];


    [moviePlayer.view removeFromSuperview];
}

-(void)doneButtonClicked
  {
         [moviePlayer stop];
        [moviePlayer.view removeFromSuperview];
         [self.navigationController popViewControllerAnimated:YES];//no need this if you are      opening the player in same screen;
  }

Answer 7

Swift版本：

import AVFoundation

func playVideo(url: URL) {

    let player = AVPlayer(url: url)

    let layer: AVPlayerLayer = AVPlayerLayer(player: player)
    layer.backgroundColor = UIColor.white.cgColor
    layer.frame = CGRect(x: 0, y: 0, width: 300, height: 300)
    layer.videoGravity = .resizeAspectFill
    self.view.layer.addSublayer(layer)

    player.play()
}

Answer 8

使用以下方法。

self.imageView_VedioContainer是AVPlayer的容器视图。

- (void)playMedia:(UITapGestureRecognizer *)tapGesture
{
    playerViewController = [[AVPlayerViewController alloc] init];

    playerViewController.player = [AVPlayer playerWithURL:[[NSBundle mainBundle]
                                                 URLForResource:@"VID"
                                                         withExtension:@"3gp"]];
    [playerViewController.player play];
    playerViewController.showsPlaybackControls =YES;
    playerViewController.view.frame=self.imageView_VedioContainer.bounds;
    [playerViewController.view setAutoresizingMask:UIViewAutoresizingNone];// you can comment this line 
    [self.imageView_VedioContainer addSubview: playerViewController.view];
}

Answer 9

您无法在视图中播放视频。它必须全屏播放。