tibame.com iOS Swift 播放音樂

README.md

播放音樂

點擊 Play 按鈕，播放音樂，必且在下方顯示進度與歌曲秒數。

要完成

• Play Button
• Label 顯示秒數進度
• Slider 進度顯示

ViewController.swift

//
//  ViewController.swift
//  PlayMusic
//
//  Created by Edward Chiang on 15/11/2016.
//  Copyright © 2016 TKU. All rights reserved.
//

import UIKit
import AVFoundation

class ViewController: UIViewController {
    
    @IBOutlet weak var progressTimeLabel: UILabel!
    @IBOutlet weak var playMusicButton: UIButton!
    @IBOutlet weak var slider: UISlider!
    
    var myPlayer : AVAudioPlayer = AVAudioPlayer()

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        let filePath = Bundle.main.path(forResource: "victory-will-be-ours-epic-grip", ofType: "mp3")
        
        do {
            
            let url = NSURL(fileURLWithPath: filePath!)
            self.myPlayer = try AVAudioPlayer(contentsOf: url as URL)
            
            // Other player can play music in background.
            try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryAmbient)
            try AVAudioSession.sharedInstance().setActive(true)
            
        } catch {
            print("Error!")
        }
        
        Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true, block: {(timer) -> Void in
            self.progressTimeLabel.text = String(format: "%.0f/%.0f", self.myPlayer.currentTime, self.myPlayer.duration)
            
            self.slider.value = Float(self.myPlayer.currentTime)
        })
        
        self.slider.maximumValue = Float(self.myPlayer.duration)
    }

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


    @IBAction func playButtonClicked(_ sender: Any) {
        
        if self.myPlayer.isPlaying == false {
            self.myPlayer.play()
            self.playMusicButton.setTitle("Pause", for: .normal)
        } else {
            self.myPlayer.pause()
            self.playMusicButton.setTitle("Play", for: .normal)
        }
    }
    
    @IBAction func sliderChanged(_ sender: Any) {
        
        self.myPlayer.currentTime = Double(self.slider.value)
    }
    
}