我从苹果“iPhone上的MoviePlayer”中看到了这个例子
我试图覆盖在mpmovieplayercontroller上,
它与捆绑的视频剪辑完美配合,
但如果我从网址流式传输视频,它就无法工作。
叠加视图将隐藏在播放器后面。
有没有办法将叠加视图放到前面?
答案 0 :(得分:11)
MPMoviePlayerController创建自己的窗口并将其设置为关键窗口 - 您可能已经从MoviePlayer示例应用程序中知道这一点。
我不知道为什么,但是当玩家使用流时会出现延迟 - 所以你在初始化玩家后得到的keyWindow可能不是玩家的窗口,因为这似乎会在以后添加。
您可以“欺骗”并使用计时器在几秒钟后获取播放器窗口,并添加叠加层:
[NSTimer scheduledTimerWithTimeInterval:5 target:self selector:@selector(addMyOverlay:) userInfo:nil repeats:FALSE]
或者您可以侦听UIWindowDidBecomeKeyNotification事件,并执行相同的操作:
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyWindowChanged:) name:UIWindowDidBecomeKeyNotification object:nil];
这两种选择都不是很好(我很想知道一种更清洁的方法)但是它完成了工作。
答案 1 :(得分:3)
当您收到“MPMoviePlayerContentPreloadDidFinishNotification”通知时,您可以覆盖您的视图。
注册通知:
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(moviePreloadDidFinish:)
name:MPMoviePlayerContentPreloadDidFinishNotification
object:nil];
收到通知后添加叠加层视图:
// Notification called when the movie finished preloading.
- (void) moviePreloadDidFinish:(NSNotification*)notification
{
NSArray *windows = [[UIApplication sharedApplication] windows];
if ([windows count] > 1)
{
// Locate the movie player window
UIWindow *moviePlayerWindow = [[UIApplication sharedApplication] keyWindow];
if ([moviePlayerWindow viewWithTag:0x3939] == nil) {
self.videoOverlayView.tag = 0x3939;
[moviePlayerWindow addSubview:self.videoOverlayView];
}
[moviePlayerWindow bringSubviewToFront:self.videoOverlayView];
}
}
答案 2 :(得分:2)
一个非常简单的解决方案:
appDelegate.window.backgroundColor = [UIColor clearColor];
appDelegate.window.windowLevel = 2;
这会将您的应用UI保持在视频窗口的顶部。
答案 3 :(得分:1)
以前的答案基于计时器。 &安培;固定5秒。
当电影播放器开始时,会向应用程序添加一个新窗口。
使用计时器检查天气是否会在您的应用程序中添加新窗口。
添加窗口(电影播放器窗口)时。设置通知。
-(void)viewDidLoad{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(moviePreloadDidFinish:)
name:MPMoviePlayerContentPreloadDidFinishNotification
object:nil];
// Register to receive a notification when the movie has finished playing.
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(moviePlayBackDidFinish:)
name:MPMoviePlayerPlaybackDidFinishNotification
object:nil];
// Register to receive a notification when the movie scaling mode has changed.
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(movieScalingModeDidChange:)
name:MPMoviePlayerScalingModeDidChangeNotification
object:nil];
videoListController.xmlClassVideoList=t;
// here ttttt is a timer declared in .h file
tttttt=[NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(startMy) userInfo:nil repeats:YES];
}
-(void)startMy{
NSArray *windows = [[UIApplication sharedApplication] windows];
NSLog(@"%i",[windows count]);
// depends on your application window
// it may be 1/2/3
if ([windows count] > 3) {
// Locate the movie player window
[tttttt invalidate];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyWindowChanged:) name:UIWindowDidBecomeKeyNotification object:nil];
}
}