Question

我正在设置一个MPMusicPlayer。现在简单的控制。播放，后退，前进。我有三个IBActions联系起来。对于游戏，它不起作用。我相信我有一次工作。对于setQueue，我尝试了两种方法。一个是给它歌曲（）。另一个是做song（）。items并将其添加到mediaCollection，然后将其传递给setQueue。都没有工作。

import UIKit
import AVFoundation
import MediaPlayer

class ViewController: UIViewController {
    let musicPlayer = MPMusicPlayerController()
    let songItems = MPMediaQuery.songs()
    //let testItems = MPMediaQuery

    func setUp(){

        //let mediaCollection = MPMediaItemCollection(items: songItems!)
        musicPlayer.setQueue(with: songItems)
        musicPlayer.prepareToPlay()
    }

    @IBOutlet weak var testLabel: UILabel!

    @IBAction func skipBack(_ sender: UIButton) {
    }

    @IBAction func play(_ sender: UIButton) {

        if musicPlayer.isPreparedToPlay{
            musicPlayer.play()}
        testLabel.text = "pressed"
    }

    @IBAction func skipForward(_ sender: Any) {
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        /*
        //Music Access
        MPMediaLibrary.requestAuthorization { (status) in
            if status == .authorized {
                self.setUp()
            } else {
                print("maybe later g")
            }
        }

    */
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}//end of class

Answer 1

如果设备处于振动模式，则视线不足。
使用AVAudioPlayer作为Apple推荐的音频文件

MPMusicPlayer设置

1 个答案: