Question

我构建了一个字符串，它是我想在AVPlayer中播放的文件的目录路径和文件名。但我很难将其转换为网址。

let dataPath = ("\(packDirectory)/").appending((cachedFilePath as NSString).lastPathComponent)
print(dataPath)
audioFileURL = dataPath
self.audioPlayerItem = AVPlayerItem(url: NSURL.fileURL(withPath: audioFileURL) as URL)
print(self.audioPlayerItem)

print（dataPath）返回：

/Users/Geoff/Library/Developer/CoreSimulator/Devices/A31BF8F8-21F6-4227-97B6-9DBDED26CA3E/data/Containers/Data/Application/788085B9-242E-46E7-9644-6A3BF9D515DB/Documents/Next-pk000/7b54d8a0f1a64b710058d4408ca4d696_The%20Name%20of%20the%20Wind%2029-92.mp3

print（self.audioPlayerItem）返回： - url部分：

URL = file:///Users/Geoff/Library/Developer/CoreSimulator/Devices/A31BF8F8-21F6-4227-97B6-9DBDED26CA3E/data/Containers/Data/Application/788085B9-242E-46E7-9644-6A3BF9D515DB/Documents/Next-pk000/7b54d8a0f1a64b710058d4408ca4d696_The%2520Name%2520of%2520the%2520Wind%252029-92.mp3

我不太了解这些东西，但我可以看到2个问题。

1）file：//：我故意从我的＆＃34; dataPath＆＃34;因为使用文件管理器时它无法找到任何带有此前缀的内容。我已经使用了这个代码：

userDirectory.removeSubrange(userDirectory.startIndex..<userDirectory.index(userDirectory.startIndex, offsetBy: 7))
let packDirectory = userDirectory.appending("Next-\(self.selectedPack!)")

2）.lastComponent中的编码已从％20更改为％2520

很困惑！

----编辑----

let urlItem = AVPlayerItem(url: URL(fileURLWithPath: audioFileURL))
if let urlAsset = urlItem.asset as? AVURLAsset {
    self.audioPlayerItem = AVPlayerItem(url: NSURL(string: urlAsset.url.path) as! URL)
    print(urlAsset.url.path)
}
print(self.audioPlayerItem!)

print（urlAsset.url.path）返回：

/Users/Geoff/Library/Developer/CoreSimulator/Devices/A31BF8F8-21F6-4227-97B6-9DBDED26CA3E/data/Containers/Data/Application/BAD0194A-8CDD-44CE-BF99-B9FF35E23BCA/Documents/Next-pk000/7b54d8a0f1a64b710058d4408ca4d696_The%20Name%20of%20the%20Wind%2029-92.mp3

print（self.audioPlayerItem！）返回：

<AVPlayerItem: 0x7bf81b60, asset = <AVURLAsset: 0x7bf87c70, URL = /Users/Geoff/Library/Developer/CoreSimulator/Devices/A31BF8F8-21F6-4227-97B6-9DBDED26CA3E/data/Containers/Data/Applicati ... 9-92.mp3>>

self.audioPlayerItem = AVPlayerItem(url: URL(fileURLWithPath: urlAsset.url.path))

打印：

file:///Users/Geoff/Library/Developer/CoreSimulator/Devices/A31BF8F8-21F6-4227-97B6-9DBDED26CA3E/data/Containers/Data/Application/7C212656-8E1C-44C8-9951-4444FB5EF853/Documents/Next-pk000/7b54d8a0f1a64b710058d4408ca4d696_The%2520Name%2520of%2520the%2520Wind%252029-92.mp3

甚至使用类似的东西：

let asset = AVAsset(url: URL(string: urlAsset.url.path)!) as AVAsset

导致丢失一些网址：

<AVPlayerItem: 0x79716ed0, asset = <AVURLAsset: 0x797185d0, URL = /Users/Geoff/Library/Developer/CoreSimulator/Devices/A31BF8F8-21F6-4227-97B6-9DBDED26CA3E/data/Containers/Data/Applicati ... 9-92.mp3>>

没有任何戏剧。所以基本上我认为它不会使用file：//前缀，但是当我插入字符串时没有它会切断应用程序中i的路径???

Answer 1

您可以阅读URL documentation的absoluteString和path。要在self.audioPlayerItem's URL缺少file:///的情况下获取self.audioPlayerItem，您可以访问asset.url的资产并获取let asset = self.audioPlayerItem?.currentItem?.asset if asset == nil { return nil } if let urlAsset = asset as? AVURLAsset { return urlAsset.url.path }的路径
```
URL.init(fileURLWithPath: )
```

已修改：如果您使用的是本地文件，则初始网址为URL.init(string: )而不是URL.init(string: )。如果您使用file:///，则字符串将为完整路径（包含k | v），而不是路径。

没关系，解码结果是一样的。尝试阅读参考A html space is showing as %2520 instead of %20

P / S：该代码段只是伪代码，请按照该代码段中的提示进行操作。

从String获取URL以与AVPlayer一起使用时发出问题

1 个答案: