当前曲目iOS Swift的音频信息 [英] Audio Information of Current Track iOS Swift

问题描述

让我们说一首曲目正在播放（通过任何应用），我想获取歌曲信息，例如名称。当您锁定手机以及专辑封面时，它会显示在您的屏幕上。如何使用swift获取该信息？

Let's say a track is playing (through any app), and I want to get the song information, such as the name. It shows up on your screen when you lock the phone, along with the album cover. How can I get that information using swift?

推荐答案

以下是获取音频信息的示例函数：

Here is example function to get audio Info:

import MediaPlayer

var url:NSURL!
let audioInfo = MPNowPlayingInfoCenter.defaultCenter()
var nowPlayingInfo:[NSObject:AnyObject] = [:]

func fetchMP3Info() {

    let playerItem = AVPlayerItem(URL: url)  //this will be your audio source 
    println(url.path!)

    let metadataList = playerItem.asset.metadata as! [AVMetadataItem]
    for item in metadataList {
        if item.commonKey != nil && item.value != nil {
            if item.commonKey  == "title" {
                println(item.stringValue)
                nowPlayingInfo[MPMediaItemPropertyTitle] = item.stringValue
            }
            if item.commonKey   == "type" {
                println(item.stringValue)
                nowPlayingInfo[MPMediaItemPropertyGenre] = item.stringValue
            }
            if item.commonKey  == "albumName" {
                println(item.stringValue)
                nowPlayingInfo[MPMediaItemPropertyAlbumTitle] = item.stringValue
            }
            if item.commonKey   == "artist" {
                println(item.stringValue)
                nowPlayingInfo[MPMediaItemPropertyArtist] = item.stringValue
            }
            if item.commonKey  == "artwork" {
                if let image = UIImage(data: item.value as! NSData) {
                    nowPlayingInfo[MPMediaItemPropertyArtwork] = MPMediaItemArtwork(image: image)
                    println(image.description)
                }
            }
        }
    }
    audioInfo.nowPlayingInfo = nowPlayingInfo

}

希望这会有所帮助。

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