我正在尝试添加一个 UISlider 来控制 AVPlayerViewController 中的音量,为此我在“AVPlayerViewController.contentOverlayView”上添加了一个 UISlider。 UISlider 不允许我拖动,就好像它未启用一样,并且它的选择器操作方法“changeVolumeLevelOfPlayer”未被调用。
这是我的代码:
-(void)viewDidLoad {
[super viewDidLoad];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
AVPlayerViewController *avPlayerViewController = [[AVPlayerViewController alloc] init];
AVPlayer *player = [AVPlayer playerWithURL:[self getVideoURLAtIndex:[self.indexOfCurrentTrailer intValue]]];
avPlayerViewController.player = player;
avPlayerViewController.delegate = self;
[player play];
avPlayerViewController.view.frame = CGRectMake(0, 0, 300, 250);
UISlider *sliderForVolumeControl = [[UISlider alloc] initWithFrame:CGRectMake(0, avPlayerViewController.view.frame.size.height/2, 100, 40)];
[sliderForVolumeControl setMinimumValue:0.0];
[sliderForVolumeControl setMaximumValue:1.0];
[sliderForVolumeControl setValue:0.5];
sliderForVolumeControl.continuous = YES;
[sliderForVolumeControl setBackgroundColor:[UIColor orangeColor]];
[sliderForVolumeControl addTarget:self action:@selector(changeVolumeLevelOfPlayer:) forControlEvents:UIControlEventValueChanged];
[sliderForVolumeControl setUserInteractionEnabled:YES];
[sliderForVolumeControl setEnabled:YES];
[avPlayerViewController.contentOverlayView addSubview:sliderForVolumeControl];
[self addChildViewController:avPlayerViewController];
[self.view addSubview:avPlayerViewController.view];
[avPlayerViewController didMoveToParentViewController:self];
[player addObserver:self forKeyPath:@"status" options:(NSKeyValueObservingOptionNew | NSKeyValueObservingOptionInitial) context:nil];
}
-(void)changeVolumeLevelOfPlayer:(UISlider *)sender {
player.volume = sender.value;
}
最佳答案
来自苹果文档:
Use the content overlay view to add additional custom views between the video content and the controls.
所以它看起来像这样:(在你的 UISlider 上有一堆其他层)
要使其正常工作,只需更改这一行:
[avPlayerViewController.contentOverlayView addSubview:sliderForVolumeControl];
为此:
[avPlayerViewController.view addSubview:sliderForVolumeControl];
关于ios - 在 AVPlayerViewController contentOverlayView 上添加的 UISlider 没有响应,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34529065/