我是swift和ios开发的新手。我的代码一直在运行,直到我更新到Swift 2.0,我使用了swift迁移工具,但我仍然无法弄清楚如何对代码进行排序和修复。请帮忙!
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" version="1.0">
<xs:simpleType name="addressType">
<xs:restriction base="xs:string">
<xs:enumeration value="CC"/>
<xs:enumeration value="BCC"/>
<xs:enumeration value="TO"/>
<xs:enumeration value="REPLY_TO"/>
</xs:restriction>
</xs:simpleType>
</xs:schema>
答案 0 :(得分:17)
更新了swift 2.0的功能:
import AVFoundation
var backgroundMusicPlayer = AVAudioPlayer()
func playBackgroundMusic(filename: String) {
let url = NSBundle.mainBundle().URLForResource(filename, withExtension: nil)
guard let newURL = url else {
print("Could not find file: \(filename)")
return
}
do {
backgroundMusicPlayer = try AVAudioPlayer(contentsOfURL: newURL)
backgroundMusicPlayer.numberOfLoops = -1
backgroundMusicPlayer.prepareToPlay()
backgroundMusicPlayer.play()
} catch let error as NSError {
print(error.description)
}
}
以这种方式使用:
playBackgroundMusic("yourFileName.mp3")
答案 1 :(得分:1)
您也可以启用会话以进行后台播放功能。
func enableBackgroundPlaying(_ enable: Bool) throws {
do {
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
do {
try AVAudioSession.sharedInstance().setActive(enable)
} catch {
throw error
}
} catch {
throw error
}
}