swift-音频播放

//
//  ViewController.swift
//  Swift-AVPlayer
//
//  Created by 品德信息 on 2016/12/29.
//  Copyright © 2016年 品德信息. All rights reserved.
//
import UIKit
import AVFoundation
import MediaPlayer
import AVKit
import AudioToolbox  //导入音频工具箱框架，使用系统声音服务

class ViewController: UIViewController {
//初始化音频播放对象，将音频播放对象，作为试图控制器的类的属性

var audioPlayer:AVAudioPlayer = AVAudioPlayer()
//创建一个视频播放控制器属性，用于视频播放
var mediaPlayer:MPMoviePlayerController = MPMoviePlayerController()


override func viewDidLoad() {
    super.viewDidLoad()
    //本地的音乐的播放：
    self.localMusic()
    //背景音乐的播放需要现在info.plist进行社会 Required background。。。
    self.backgroundMusic()
  //视频播放
//        self.mediaPlayerViedo()
    //ios 8 的新类用于视频播放
//        AVPlayerViewController
    
    //声明一个系统声音标志类型的声音变量
    var soundID:SystemSoundID = 0
    let path = Bundle.main.path(forResource: "callRing", ofType: "mp3")
    //路径找不到就会报内存错误的
    let soundUrl = URL(fileURLWithPath: path!)
    AudioServicesCreateSystemSoundID(soundUrl as CFURL, &soundID)
    
    
    
}
func mediaPlayerViedo() {
    //视频播放前首先创建一个异常捕捉语句
    do{
        let path = Bundle.main.path(forResource: "loginmovie", ofType: "mp4")
        let movieUrl = URL(fileURLWithPath:path!)
        mediaPlayer = MPMoviePlayerController(contentURL:movieUrl)
        //设置音频播放为全屏
        mediaPlayer.controlStyle = MPMovieControlStyle.fullscreen
        mediaPlayer.view.frame = self.view.bounds
        //设置开始时间
        mediaPlayer.initialPlaybackTime = -1
        self.view.addSubview(mediaPlayer.view)
        
        mediaPlayer.play()
        //添加一个通知用来监听视频播放是否结束
        NotificationCenter.default.addObserver(self, selector: #selector(ViewController.movieFinished(notify:)), name: .MPMoviePlayerPlaybackDidFinish, object: mediaPlayer)
        
    }catch
    {
        print(error)
    }
}
//创建一个方法用来响应视频播放
func movieFinished(notify:NSNotification) {
    print("movie ends")
    //获取视频播放控制器
    let player = notify.object
    NotificationCenter.default.removeObserver(self, name: NSNotification.Name.MPMoviePlayerPlaybackDidFinish, object: player)
    
}
func backgroundMusic()  {
    //获取音频会话对象，改对象属于单利模式，也就是说不用开发者写，自行实例化，这个类在各种音频环境中起着非常重要的作用
    let session = AVAudioSession.sharedInstance()
    //在音频播放前，首先创建一个异常捕捉语句
    do{
        //启动音频会话管理，此时会阻断后台音乐播放
        try session.setActive(true)
        //设置音频播放类别，表示该应用仅支持音频播放
        try session.setCategory(AVAudioSessionCategoryPlayback)
        
        //定义一个字符串变量，描述声音文件的路径
        let path = Bundle.main.path(forResource: "callRing", ofType: "mp3")
        //将字符串路径转化为网址路径
        let soundUrl = URL(fileURLWithPath: path!)
        
        try audioPlayer = AVAudioPlayer(contentsOf:soundUrl)
        //为音频播放做好准备
        audioPlayer.prepareToPlay()
        //设置音量
        audioPlayer.volume = 1.1
        audioPlayer.numberOfLoops = -1
        audioPlayer.play()
        
    }catch{
        print(error)
    }

}

func localMusic()  {
    let path = Bundle.main.path(forResource: "callRing", ofType: "mp3")
    //        public init(fileURLWithPath path: String)
    let soundUrl = URL(fileURLWithPath: path!)
    
    //在音频播放前首先创建一个异常捕捉语句
    do{
        //对音频播放对象进行初始化，并加载指定的音频播放对象
        //            public init(contentsOf url: URL) throws
        
        try audioPlayer = AVAudioPlayer(contentsOf:soundUrl)
        //设置音频对象播放的音量的大小
        audioPlayer.volume = 1.0
        //设置音频播放的次数，-1为无限循环播放
        audioPlayer.numberOfLoops = -1
        audioPlayer.play()
    }catch{
        print(error)
    }

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


}