如何在应用加载时在启动屏幕上播放MP4video

我有一个MP4video，我想放在启动画面上。 就像在启动画面上加载图像但现在只是一个video的人一样。 而且我确实知道如何在启动画面上放置图像而不是video任何帮助？

Answer 1

您可以为LaunchScreen创建一个ViewController并在里面使用AVPlayer。 在swift中会是这样的：

var player: AVPlayer? override func viewDidLoad() { super.viewDidLoad() loadVideo() } private func loadVideo() { //this line is important to prevent background music stop do { try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryAmbient) } catch { } let path = NSBundle.mainBundle().pathForResource("your path", ofType:"mp4") player = AVPlayer(URL: NSURL(fileURLWithPath: path!)) let playerLayer = AVPlayerLayer(player: player) playerLayer.frame = self.view.frame playerLayer.videoGravity = AVLayerVideoGravityResizeAspectFill playerLayer.zPosition = -1 self.view.layer.addSublayer(playerLayer) player?.seekToTime(kCMTimeZero) player?.play() } 

Answer 2

您无法在启动屏幕上放置video，但可以在苹果启动后立即启动video。 在视觉上，效果可以无法区分。

只需在第一个视图控制器的viewDidLoad方法上添加video播放调用，并置于某个控件中，不要强制用户在应用程序运行时一直查看它。 否则您的用户很快就会生气。

Yom可能希望将video的第一个摄影图调整到您的启动屏幕，并为多个设备分辨率提供不同的video。 请记住，各种移动苹果设备支持的各种video大小并不总是与每个设备的显示大小相匹配。

您的里程可能会有所不同，您需要“旋转”您的video，使其在水平播放时显示为“垂直”。

例如：

 - (void) play{ NSString *videoName=@"video320"; if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) { videoName=@"vid_trailer"; CGFloat height =self.view.frame.size.height; //test retina display if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)] == YES && [[UIScreen mainScreen] scale] == 2.00) { // RETINA DISPLAY - you may need to add check for @3x resolutions videoName=@"video920"; } if (height > 460.0){ videoName=@"video1096"; } } else { videoName=@"video768"; self.view.backgroundColor=[UIColor blackColor]; } NSString *urlString = [[NSBundle mainBundle] pathForResource:videoName ofType:@"mp4"]; NSLog(@"urlString=%@",urlString); NSURL *url = [NSURL fileURLWithPath:urlString]; if (self.videoPlayer != nil) { [self.videoPlayer stop]; self.videoPlayer=nil; } self.videoPlayer = [[MPMoviePlayerController alloc] initWithContentURL:url]; self.videoPlayer.view.frame=self.view.frame; self.videoPlayer.fullscreen=NO; [self.videoPlayer setScalingMode:MPMovieScalingModeAspectFill]; [self.videoPlayer setShouldAutoplay:YES]; [self.videoPlayer setControlStyle:MPMovieControlStyleNone]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(terminateVideo:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil]; for(UIView* subV in self.videoPlayer.view.subviews) { subV.backgroundColor = [UIColor clearColor]; } [self.tabBarController.view addSubview:self.videoPlayer.view]; [self.navigationController.view addSubview:self.videoPlayer.view]; [self.videoPlayer play]; 

}

 - (void) terminateVideo:(id)sender{ [self.videoPlayer.view removeFromSuperview]; self.videoPlayer =nil; self.view.backgroundColor=[UIColor darkGrayColor]; } 

Answer 3

使用swift3中的最新语法

 import MediaPlayer class ViewController: UIViewController { var player: AVPlayer? override func viewDidLoad() { super.viewDidLoad() self.loadVideo() // Do any additional setup after loading the view, typically from a nib. } private func loadVideo() { //this line is important to prevent background music stop do { try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryAmbient) } catch { } let path = Bundle.main.path(forResource: "Juvi Landing Page Animation", ofType:"mp4") let filePathURL = NSURL.fileURL(withPath: path!) let player = AVPlayer(url: filePathURL) let playerLayer = AVPlayerLayer(player: player) playerLayer.frame = self.view.frame playerLayer.videoGravity = AVLayerVideoGravity.resizeAspectFill playerLayer.zPosition = -1 self.view.layer.addSublayer(playerLayer) player.seek(to: kCMTimeZero) player.play() }