前言

今天更新了iOS14，iOS14可以支持畫中畫功能处坪，閑著無聊驾茴，來寫個代碼實現(xiàn)。

話不多說事格，先上Demo PictureInPictureDemo

效果圖

IMG_3388.PNG

IMG_3387.PNG

基本使用

1惕艳、打開Xcode，開啟后臺模式

image.png

2驹愚、打開畫中畫權(quán)限

-(void)openAccess{
    @try {
        NSError *error = nil;
        [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:&error];
        [[AVAudioSession sharedInstance] setActive:YES error:&error];
    } @catch (NSException *exception) {
        NSLog(@"AVAudioSession發(fā)生錯誤");
    }
}

3远搪、初始化畫中畫控制器

-(void)setupPictureInPicture{
    NSURL *urlVideo = [[NSBundle mainBundle]URLForResource:@"v1" withExtension:@"MP4"];
    AVAsset *asset = [AVAsset assetWithURL:urlVideo];
    AVPlayerItem *playerItem = [AVPlayerItem playerItemWithAsset:asset];
    self.player = [AVPlayer playerWithPlayerItem:playerItem];
    self.playerLayer = [AVPlayerLayer playerLayerWithPlayer:self.player];
    self.playerLayer.frame = self.view.frame;
    self.playerLayer.videoGravity = AVLayerVideoGravityResizeAspect;
    [self.view.layer addSublayer:self.playerLayer];
    //1.判斷是否支持畫中畫功能
    if ([AVPictureInPictureController isPictureInPictureSupported]) {
        self.pipVC = [[AVPictureInPictureController alloc] initWithPlayerLayer:self.playerLayer];
        self.pipVC.delegate = self;
    }
    [self.player play];
}

4、創(chuàng)建按鈕

-(void)creatBtn{
    UIButton * switchBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [switchBtn setFrame:CGRectMake(20, 20, 50, 40)];
    [switchBtn setBackgroundColor:[UIColor blackColor]];
    [switchBtn setImage:[UIImage imageNamed:@"Classcenter_draw"] forState:UIControlStateNormal];
    [switchBtn addTarget:self action:@selector(switchBtnClick:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview: switchBtn];
}

5逢捺、按鈕點擊方法實現(xiàn)

-(void)switchBtnClick:(UIButton*)sender{
    //判斷當(dāng)前是否為畫中畫
    if (self.pipVC.isPictureInPictureActive) {
        //關(guān)閉畫中畫
        [self.pipVC stopPictureInPicture];
    } else {
        //開始畫中畫
        [self.pipVC startPictureInPicture];
    }
}

6谁鳍、AVPictureInPictureControllerDelegate代理實現(xiàn)

// 即將開啟畫中畫
- (void)pictureInPictureControllerWillStartPictureInPicture:(AVPictureInPictureController *)pictureInPictureController{
    NSLog(@"即將開啟畫中畫");
}
// 已經(jīng)開啟畫中畫
- (void)pictureInPictureControllerDidStartPictureInPicture:(AVPictureInPictureController *)pictureInPictureController{
    NSLog(@"已經(jīng)開啟畫中畫");
}
// 開啟畫中畫失敗
- (void)pictureInPictureController:(AVPictureInPictureController *)pictureInPictureController failedToStartPictureInPictureWithError:(NSError *)error{
    NSLog(@"開啟畫中畫失敗");
}
// 即將關(guān)閉畫中畫
- (void)pictureInPictureControllerWillStopPictureInPicture:(AVPictureInPictureController *)pictureInPictureController{
    NSLog(@"即將關(guān)閉畫中畫");
}
// 已經(jīng)關(guān)閉畫中畫
- (void)pictureInPictureControllerDidStopPictureInPicture:(AVPictureInPictureController *)pictureInPictureController{
    NSLog(@"已經(jīng)關(guān)閉畫中畫");
}
// 關(guān)閉畫中畫且恢復(fù)播放界面
- (void)pictureInPictureController:(AVPictureInPictureController *)pictureInPictureController restoreUserInterfaceForPictureInPictureStopWithCompletionHandler:(void (^)(BOOL restored))completionHandler{
    NSLog(@"關(guān)閉畫中畫且恢復(fù)播放界面");
}