当用户从iPod库中选择n音频时,我会引用MPMediaItem。我正在使用
获取该项目的资产网址[mediaItem valueForProperty: MPMediaItemPropertyAssetURL]
但这并没有给我这个文件的确切物理位置,而是给了我一个url w.r.t iPod库。
ipod-library://item/item.mp3?id=1840064795502796074
有没有办法从iPod库中获取歌曲的物理网址?
编辑 - 实际上我想从物理文件中提取NSData并将其发送到我的后端服务器,因此我需要物理文件URL而不是相对URL
答案 0 :(得分:0)
这会有效,但有点慢。此外,它是为新的MP类编写的:
// song is an instance of MPMediaItem
if let val = song.value(forKey: MPMediaItemPropertyAssetURL) as? URL {
let asset = AVURLAsset.init(url: val)
if asset.isExportable {
let exportSession = AVAssetExportSession(asset: asset, presetName: AVAssetExportPresetAppleM4A)
let exportPath: NSString = NSTemporaryDirectory().appendingFormat("/\(UUID().uuidString).m4a") as NSString
let exportUrl: NSURL = NSURL.fileURL(withPath: exportPath as String) as NSURL
exportSession?.outputURL = exportUrl as URL
exportSession?.outputFileType = AVFileTypeAppleM4A
exportSession?.exportAsynchronously(completionHandler: {
// do some stuff with the file
do {
try FileManager.default.removeItem(atPath: exportPath as String!)
} catch {
}
}