创建
AudioManager.swift
import Foundation
import AVFoundation
import UIKit
class AudioManager: NSObject {
static let shared = AudioManager()
fileprivate let audioSession = AVAudioSession.sharedInstance()
fileprivate var backgroundAudioPlayer: AVAudioPlayer?
fileprivate var backgroundTimeLength = 0
fileprivate var timer: Timer?
// 是否开启后台自...