我正在使用自定义的UISlider来实现在AVPlayer播放视频时的调节进度。我正在尝试找到最好的方法,在UISlider的相应端显示当前播放时间和剩余持续时间,因为通常在MPMoviePlayerController中是这样显示的。
任何帮助都将不胜感激。
Swift 4.x
let player = AVPlayer()
player.addPeriodicTimeObserver(forInterval: CMTime.init(value: 1, timescale: 1), queue: .main, using: { time in
if let duration = player.currentItem?.duration {
let duration = CMTimeGetSeconds(duration), time = CMTimeGetSeconds(time)
let progress = (time/duration)
if progress > targetProgress {
print(progress)
//Update slider value
}
}
})
< p >或者extension AVPlayer {
func addProgressObserver(action:@escaping ((Double) -> Void)) -> Any {
return self.addPeriodicTimeObserver(forInterval: CMTime.init(value: 1, timescale: 1), queue: .main, using: { time in
if let duration = self.currentItem?.duration {
let duration = CMTimeGetSeconds(duration), time = CMTimeGetSeconds(time)
let progress = (time/duration)
action(progress)
}
})
}
}
使用
let player = AVPlayer()
player.addProgressObserver { progress in
//Update slider value
}
在两端放置一个UILabel。使用-[AVPlayer addPeriodicTimeObserverForInterval:queue:usingBlock:]
更新它们。使用-[AVPlayer currentTime]
和-[AVPlayerItem duration]
计算剩余时间。
[slider setMaximumValue:[AVPlayerItem duration]];
//use NSTimer, run repeat function
-(void)updateValueSlide{
[slider setValue:[AVPlayerItem duration]];
}