iPhone SDK:如何在视图中播放视频?而不是全屏
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13-09-2019 - |
题
我正在尝试在 UIView
, ,所以我的第一步是为该视图添加一个类,并使用以下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,当在自己的类中使用此方法时,这只会使应用程序崩溃,但在其他地方却没问题。有谁知道如何在视图中播放视频?并避免全屏显示?
解决方案
由于3.2 SDK的您可以访问MPMoviePlayerController
的视图属性,修改其框架并将其添加到您的视图层次。
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 /一千九百五十四分之四万四千六百四十二
其他提示
,最好的方法是使用层insted的的观点:
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];
不要忘了添加框架:
#import <QuartzCore/QuartzCore.h>
#import "AVFoundation/AVFoundation.h"
在你的代码看,你需要设置视频播放器控制器的视图的框架,并且还添加了视频播放器控制器的视图到您的视图。另外,不要忘记为 MediaPlayer.framework 添加到您的目标。
下面是一些示例代码:
#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
迅速
这是一个独立的项目,因此您可以在上下文中看到所有内容。
布局
使用以下命令创建如下布局 UIView
和一个 UIButton
. 。这 UIView
将是我们将在其中播放视频的容器。
将视频添加到项目中
如果您需要示例视频来练习,可以从以下位置获取一个 样本视频.com. 。我在本例中使用 mp4 格式的视频。将视频文件拖放到您的项目中。我还必须将其显式添加到捆绑资源中(转到 构建阶段 > 复制捆绑资源, , 看 这个答案 了解更多)。
代码
这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()
}
}
笔记
- 如果您要切换进出不同的视频,您可以使用
AVPlayerItem
. - 如果您仅使用
AVFoundation
和AVPlayer
, ,那么您必须构建自己的所有控件。如果你想全屏播放视频,你可以使用AVPlayerViewController
. 。您将需要导入AVKit
为了那个原因。它配有一整套用于暂停、快进、快退、停止等的控件。 这里 和 这里 是一些视频教程。 MPMoviePlayerController
您可能在其他答案中看到的内容已被弃用。
结果
该项目现在应该如下所示。
NSString * pathv = [[NSBundle mainBundle] pathForResource:@"vfile" ofType:@"mov"];
playerv = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL fileURLWithPath:pathv]];
[self presentMoviePlayerViewControllerAnimated:playerv];
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;
}
夫特版本:
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()
}
使用下面的方法。
self.imageView_VedioContainer
是您的AVPlayer
的容器图。
- (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];
}
您不能播放视频的视图中。它具有将要播放全屏。
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