AVPlayerViewController播放视频(全屏时强制

最近项目有一部分需要做一个视频播放的功能,找了下,发现AVPlayerViewController可以基本实现所需的功能,但有一点就是AVPlayerViewController全屏时依旧是默认竖屏,必须手动改变设备方向时才会发生旋转,经过各种查资料和摸索,最终实现了默认全屏的方法.代码如下:

//点击一个按钮,开始播放视频
- (IBAction)playVideo:(id)sender {
    AVPlayerViewController * vc = [[AVPlayerViewController alloc] init];
    NSString * path = [[NSBundle mainBundle] pathForResource:@"2" ofType:@"MP4"];
    NSURL * url = [NSURL fileURLWithPath:path];
    
    AVPlayerItem * item = [[AVPlayerItem alloc] initWithURL:url];
    vc.player = [[AVPlayer alloc] initWithPlayerItem:item];
    vc.player = [AVPlayer playerWithURL:url];
    vc.entersFullScreenWhenPlaybackBegins = YES;
    vc.exitsFullScreenWhenPlaybackEnds = YES;
    vc.videoGravity = AVLayerVideoGravityResizeAspect;
    vc.view.bounds = CGRectMake(20, 20, 300, 160);
    vc.view.center = self.view.center;
    vc.view.translatesAutoresizingMaskIntoConstraints = YES;
    [self addChildViewController:vc];
    [self.view addSubview:vc.view];
    [vc.player play];
}

下面的代码是解决全屏时默认横屏
思路也比较简单,既然全屏时只有手动改变设备方向才能使视频全屏,那么我们就在播放器全屏的时候用代码强制改变一下设备方向(真实设备此时可能依旧是竖屏状态)

static NSString * const VIDEO_CONTROLLER_CLASS_NAME_IOS8 = @"AVFullScreenViewController";
//AVFullScreenViewController是点击全屏按钮时系统 present 的控制器,我们可以通过[window.rootViewController presentedViewController]获取控制器的名字.
- (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {
    if ([[window.rootViewController presentedViewController] isKindOfClass:NSClassFromString(VIDEO_CONTROLLER_CLASS_NAME_IOS8)]) {
        NSNumber *value = [NSNumber numberWithInt:UIInterfaceOrientationLandscapeRight];
        [[UIDevice currentDevice] setValue:value forKey:@"orientation"];
        return UIInterfaceOrientationMaskPortrait;
    } else {
        NSNumber *value = [NSNumber numberWithInt:UIInterfaceOrientationPortrait];
        [[UIDevice currentDevice] setValue:value forKey:@"orientation"];
        return UIInterfaceOrientationMaskPortrait;
    }
}