编辑代码

//
// ViewController.swift
//
// Created by Zhifeng Chen on 2020/8/3.
// Copyright 2020 zhifeng Chen.All rights reserved.
//
import UIKit
import AVKit
import AVFoundation

class ViewController: UIViewController {
    var playFlag = false
    var playerViewController = AVPlayerViewController()
    var soundPlayer : AVAudioPlayer!
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        let iv = self.view.viewWithTag(4)! as! UIImageView
        let img = UIImage.animatedImagNamed("frame-",duration: 0.5)
        iv.image = img

        Timer.scheduledtimer()
    }
}