快速循环一步?

Question

我有以下带有网址的数组：

let KStorePlayURL = [
https://source.s3-us-west-2.amazonaws.com/ENVOI/2018/07/19/ATASTEOFDANCE_S1_EP3.mp4,                
https://source.s3-us-west-2.amazonaws.com/ENVOI/2018/05/23/ATasteOfDance_S1E1_Episode.mp4,                         
https://source.s3-us-west-2.amazonaws.com/ENVOI/2018/05/23/ATasteOfDance_S1E1_Episode.mp4,
https://source.s3-us-west-2.amazonaws.com/ENVOI/2018/05/23/ATasteOfDance_S1E1_Episode.mp4
] 

如何在 for 循环中一个接一个地获取 URL？另外，当在此Bitmovin播放器中播放一个视频并关注其他视频时？

这是我已经尝试过的代码：

@objc func setUpPlayerVideos1() {
print(KStorePlayURL)
for i in 0..<KStorePlayURL.count {
let streamURL = URL(string: KStorePlayURL[i])
playlist.append(PlaylistItem(url: streamURL!, title: "player"))
// Create player based with a default configuration
let player = BitmovinPlayer()
// Create player view and pass the player instance to it
let playerView = BMPBitmovinPlayerView(player: player, frame: .zero)
// Listen to player events
player.add(listener: self)
playerView.autoresizingMask = [.flexibleHeight, .flexibleWidth]
playerView.frame = view.bounds
view.addSubview(playerView)
view.bringSubview(toFront: playerView)
// store the reference to the player
self.Bitmovinplayer = player
}
// Start the playlist
playNextItem()
}

Answer 1

您不应该使用 for 循环，因为您将在每次迭代中覆盖播放器。您需要做的是使用 for 循环或更实用的样式填充playlist，如下所示：

KStorePlayURL.forEach { urlString in
//Make sure that the url address is correct
guard let streamURL = URL(string: urlString) else {
fatalError("Error in stream url")
}
playlist.append(PlaylistItem(url: streamURL!, title: "player"))
}

在这里，我假设KStorePlayURL是一个字符串数组：

let KStorePlayURL = [
"https://source.s3-us-west-2.amazonaws.com/ENVOI/2018/07/19/ATASTEOFDANCE_S1_EP3.mp4",
"https://source.s3-us-west-2.amazonaws.com/ENVOI/2018/05/23/ATasteOfDance_S1E1_Episode.mp4",
"https://source.s3-us-west-2.amazonaws.com/ENVOI/2018/05/23/ATasteOfDance_S1E1_Episode.mp4",
"https://source.s3-us-west-2.amazonaws.com/ENVOI/2018/05/23/ATasteOfDance_S1E1_Episode.mp4"
]

最终代码应如下所示：

@objc func setUpPlayerVideos1() {
KStorePlayURL.forEach { urlString in
guard let streamURL = URL(string: urlString) else {
fatalError("Error in stream url")
}
playlist.append(PlaylistItem(url: streamURL!, title: "player"))
}
let player = BitmovinPlayer()
// Create player view and pass the player instance to it
let playerView = BMPBitmovinPlayerView(player: player, frame: .zero)
// Listen to player events
player.add(listener: self)
playerView.autoresizingMask = [.flexibleHeight, .flexibleWidth]
playerView.frame = view.bounds
view.addSubview(playerView)
view.bringSubview(toFront: playerView)
// store the reference to the player
self.Bitmovinplayer = player
}
// Start the playlist
playNextItem()
}

您可以在此处找到使用 bitmovin 播放器播放播放列表的完整示例代码。