//
// ViewController.swift
// MusicPlayer
//
// Created by stayfoolish on 2018. 8. 27..
// Copyright © 2018년 stayfoolish. All rights reserved.
//
import UIKit
import AVFoundation
class ViewController: UIViewController, AVAudioPlayerDelegate {
var player: AVAudioPlayer!
var timer: Timer!
@IBOutlet var playPauseButton: UIButton!
@IBOutlet var timeLabel: UILabel!
@IBOutlet var progressSlider: UISlider!
func initializePlayer() {
guard let soundAsset: NSDataAsset = NSDataAsset(name: "sound") else {
print("음원 파일 에셋을 가져올 수 없습니다")
return
}
do {
try self.player = AVAudioPlayer(data: soundAsset.data)
self.player.delegate = self
} catch let error as NSError {
print("플레이어 초기화 실패")
print("코드 : \(error.code), 메세지 : \(error.localizedDescription)")
}
self.progressSlider.maximumValue = Float(self.player.duration)
self.progressSlider.minimumValue = 0
self.progressSlider.value = Float(self.player.currentTime)
}
func updateTimeLabelText(time: TimeInterval) {
let minute: Int = Int(time / 60)
let second: Int = Int(time.truncatingRemainder(dividingBy: 60))
let milisecond: Int = Int(time.truncatingRemainder(dividingBy: 1) * 100)
let timeText: String = String(format: "%02ld:%02ld:%02ld", minute, second, milisecond)
self.timeLabel.text = timeText
}
func makeAndFireTimer() {
self.timer = Timer.scheduledTimer(withTimeInterval: 0.01, repeats: true, block: { [unowned self] (timer: Timer) in
if self.progressSlider.isTracking { return }
self.updateTimeLabelText(time: self.player.currentTime)
self.progressSlider.value = Float(self.player.currentTime)
})
self.timer.fire()
}
func invalidateTimer() {
self.timer.invalidate()
self.timer = nil
}
func addViewsWithCode() {
self.addPlayPauseButton()
self.addTimeLabel()
self.addProgressSlider()
}
func addPlayPauseButton() {
let button: UIButton = UIButton(type: UIButtonType.custom)
button.translatesAutoresizingMaskIntoConstraints = false
self.view.addSubview(button)
button.setImage(UIImage(named: "button_play"), for: UIControlState.normal)
button.setImage(UIImage(named: "button_pause"), for: UIControlState.selected)
button.addTarget(self, action: #selector(self.touchUpPlayPauseButton(_:)), for: UIControlEvents.touchUpInside)
let centerX: NSLayoutConstraint
centerX = button.centerXAnchor.constraint(equalTo: self.view.centerXAnchor)
let centerY: NSLayoutConstraint
centerY = NSLayoutConstraint(item: button, attribute: NSLayoutAttribute.centerY, relatedBy: NSLayoutRelation.equal, toItem: self.view, attribute: NSLayoutAttribute.centerY, multiplier: 0.8, constant: 0)
let width: NSLayoutConstraint
width = button.widthAnchor.constraint(equalTo: self.view.widthAnchor, multiplier: 0.5)
let ratio: NSLayoutConstraint
ratio = button.heightAnchor.constraint(equalTo: button.widthAnchor, multiplier: 1)
centerX.isActive = true
centerY.isActive = true
width.isActive = true
ratio.isActive = true
self.playPauseButton = button
}
func addTimeLabel() {
let timeLabel: UILabel = UILabel()
timeLabel.translatesAutoresizingMaskIntoConstraints = false
self.view.addSubview(timeLabel)
timeLabel.textColor = UIColor.black
timeLabel.textAlignment = NSTextAlignment.center
timeLabel.font = UIFont.preferredFont(forTextStyle: UIFontTextStyle.headline)
let centerX: NSLayoutConstraint
centerX = timeLabel.centerXAnchor.constraint(equalTo: self.playPauseButton.centerXAnchor)
let top: NSLayoutConstraint
top = timeLabel.topAnchor.constraint(equalTo: self.playPauseButton.bottomAnchor, constant: 8)
centerX.isActive = true
top.isActive = true
self.timeLabel = timeLabel
self.updateTimeLabelText(time: 0)
}
func addProgressSlider() {
let slider: UISlider = UISlider()
slider.translatesAutoresizingMaskIntoConstraints = false
self.view.addSubview(slider)
slider.minimumTrackTintColor = UIColor.red
slider.addTarget(self, action: #selector(self.sliderValueChanged(_:)), for: UIControlEvents.valueChanged)
let safeAreaGuide: UILayoutGuide = self.view.safeAreaLayoutGuide
let centerX: NSLayoutConstraint
centerX = slider.centerXAnchor.constraint(equalTo: self.timeLabel.centerXAnchor)
let top: NSLayoutConstraint
top = slider.topAnchor.constraint(equalTo: self.timeLabel.bottomAnchor, constant: 8)
let leading: NSLayoutConstraint
leading = slider.leadingAnchor.constraint(equalTo: safeAreaGuide.leadingAnchor, constant: 16)
let trailing: NSLayoutConstraint
trailing = slider.trailingAnchor.constraint(equalTo: safeAreaGuide.trailingAnchor, constant: -16)
centerX.isActive = true
top.isActive = true
leading.isActive = true
trailing.isActive = true
self.progressSlider = slider
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.initializePlayer()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func audioPlayerDecodeErrorDidOccur(_ player: AVAudioPlayer, error: Error?) {
guard let error: Error = error else {
print("오디오 플레이어 디코드 오류발생")
return
}
let message: String
message = "오디오 플레이어 오류 발생 \(error.localizedDescription)"
let alert: UIAlertController = UIAlertController(title: "알림", message: message, preferredStyle: UIAlertControllerStyle.alert)
let okAction: UIAlertAction = UIAlertAction(title: "확인", style: UIAlertActionStyle.default) { (action: UIAlertAction) -> Void in
self.dismiss(animated: true, completion: nil)
}
alert.addAction(okAction)
self.present(alert, animated: true, completion: nil)
}
func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {
self.playPauseButton.isSelected = false
self.progressSlider.value = 0
self.updateTimeLabelText(time: 0)
self.invalidateTimer()
}
@IBAction func touchUpPlayPauseButton(_ sender: UIButton){
sender.isSelected = !sender.isSelected
if sender.isSelected{
self.player?.play()
} else {
self.player?.pause()
}
if sender.isSelected {
self.makeAndFireTimer()
}else {
self.invalidateTimer()
}
}
@IBAction func sliderValueChanged(_ sender: UISlider) {
self.updateTimeLabelText(time: TimeInterval(sender.value))
if sender.isTracking { return }
self.player.currentTime = TimeInterval(sender.value)
}
}
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