为什么我的ios模拟器上听不到这个mp3文件？

Question

import UIKit
import AVFoundation
class MainViewController: UIViewController,ViewController2Delegate,AVAudioPlayerDelegate {

    @IBOutlet weak var b1: UIButton!
    @IBAction func b1_pressed(sender: AnyObject) {
        NSLog("hi");
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        var player: AVPlayer! = nil
        var steamingURL:NSURL! = NSURL(string:"http://yflvr.com:8080/data/songs1/mp3/16287239.mp3")
        player = AVPlayer(URL: steamingURL)
        player.play()
    }

Answer 1

在viewDidLoad完成后，您的AVPlayer对象将被释放，因为您已将播放器分配给局部变量。您需要为玩家创建一个属性。

@IBOutlet weak var b1: UIButton!
@IBAction func b1_pressed(sender: AnyObject) {
        NSLog("hi");
    }

var player: AVPlayer!

    override func viewDidLoad() {
        super.viewDidLoad()
        var steamingURL:NSURL! = NSURL(string:"http://yflvr.com:8080/data/songs1/mp3/16287239.mp3")
        player = AVPlayer(URL: steamingURL)
        player.play()
    }