Ios 如何准确地在AVAudioPlayer开始播放音频时获得通知?
注:请仔细阅读标题(和问题),然后再将其标记为副本。问题是关于Ios 如何准确地在AVAudioPlayer开始播放音频时获得通知?,ios,swift,avaudioplayer,Ios,Swift,Avaudioplayer,注:请仔细阅读标题(和问题),然后再将其标记为副本。问题是关于AVAudioPlayer而不是AVPlayer 因此根据AVAudioPlayer open func play()->Bool/*声音是异步播放的*/ 我需要在音频启动时向用户显示一个弹出窗口。这不是我们调用play()的时候 当玩家停止游戏而不是开始游戏时,会有一个代表调用: 我找不到任何方法来准确知道音频何时启动。有什么方法可以检查它吗?我面临同样的问题,我决定基于AVPlayer创建一个新类: import AVFound
AVAudioPlayer
而不是AVPlayer
因此根据
AVAudioPlayer
open func play()->Bool/*声音是异步播放的*/代码>
我需要在音频启动时向用户显示一个弹出窗口。这不是我们调用play()
的时候
当玩家停止游戏而不是开始游戏时,会有一个代表调用:
我找不到任何方法来准确知道音频何时启动。有什么方法可以检查它吗?我面临同样的问题,我决定基于AVPlayer创建一个新类:
import AVFoundation
import UIKit
class AudioManager {
private init() {}
public static let shared = AudioManager()
var player: AVPlayer?
var item: AVPlayerItem?
var layer: AVPlayerLayer?
var currentUrl: URL?
var pauseTime: CMTime?
var endOfTrackObserver: Any?
func startPlayContentOf(url: URL?) {
NotificationCenter.default.addObserver(self,
selector: #selector(self.playerItemDidReachEnd(notification:)),
name: NSNotification.Name.AVPlayerItemDidPlayToEndTime,
object: self.player?.currentItem)
guard let newAudioUrl = url else { return }
let newAudioItem = AVPlayerItem(url: newAudioUrl)
if let currentUrl = self.currentUrl, currentUrl == newAudioUrl {
//same track
if let playing = self.player?.isPlaying, playing == true {
self.pauseTime = self.player?.currentTime()
self.pause()
} else {
self.player = AVPlayer(playerItem: newAudioItem)
self.player?.volume = 3
self.player?.seek(to: self.pauseTime ?? CMTime.zero)
self.layer = AVPlayerLayer(player: self.player)
self.layer?.frame = CGRect(x: 0, y: 0, width: 10, height: 10)
self.layer?.backgroundColor = UIColor.clear.cgColor
guard let layer = self.layer else { return }
UIApplication.shared.keyWindow?.rootViewController?.view.layer.insertSublayer(layer, at: 0)
self.play()
}
} else {
//new track
self.pauseTime = nil
self.pause()
self.player = AVPlayer(playerItem: newAudioItem)
self.player?.volume = 3
self.layer = AVPlayerLayer(player: self.player)
self.layer?.frame = CGRect(x: 0, y: 0, width: 10, height: 10)
self.layer?.backgroundColor = UIColor.clear.cgColor
guard let layer = self.layer else { return }
UIApplication.shared.keyWindow?.rootViewController?.view.layer.insertSublayer(layer, at: 0)
self.play()
}
self.currentUrl = newAudioUrl
}
func playOrPause() {
guard self.player != nil else { return }
if self.player!.isPlaying {
self.player!.pause()
} else {
self.player?.replaceCurrentItem(with: self.item)
self.player!.play()
}
}
func pause() {
guard self.player != nil else { return }
self.player!.pause()
}
func play() {
guard self.player != nil else { return }
self.player!.play()
}
@objc func playerItemDidReachEnd(notification: Notification) {
self.pauseTime = nil
}
}
if self.avPlayer?.currentItem?.status==AVPlayerItem.status.readyToPlay{if(self.player?.currentItem?.isPlaybackLikelyToKeepUp)==true{//您可以在这里管理它}@阿塔扎兹先生请仔细阅读标题。它不是AVPlayer,而是AVAudioPlayer。@Shu KhanAVPlayer
和AVAudioPlayer
是两个不相关的游戏classes@iur你可以尝试在属性上放置观察者,例如在currentTime
@mag_zbc上,我也考虑过这一点代码>属性<代码>重要。不要轮询此属性以确定播放何时完成,而是执行指定的委托方法。
因此我不确定是否可以使用它检查播放机是否开始播放。