iOS开发-音乐播放

十度 IOS 2015年12月01日收藏

现在的各种App大行其道，其实常用也就是围绕着吃喝玩乐基本的需求，视频，音乐在智能手机出现之前更是必不可少的功能，每个手机都会有一个自带的音乐播放器，当然公众也有自己的需求所以也就造就了各种音乐播放软件，自己下午闲来无事简单的写了一个随机播放音乐的Demo，iOS中有三种播放音频的方式AVAudioPlayer、音频服务、音频队列。另外两种暂时没有用到，就简单的练手了一下AVAudioPlayer，还是开始正题吧；

1.新建项目或者在原有项目重新弄一个页面，先看页面：

2.导入几首自己喜欢的歌曲：

3.导入AVFoundation/AVFoundation.h，对四个按钮进行事件操作，一个AVAudioPlayer只能对应一个URL，因此播放其他歌曲的时候需要情况一下;

定义两个成员变量，并且初始化成员变量:

@interface MusicViewController ()
@property (nonatomic,strong)AVAudioPlayer *player;
@property (nonatomic,strong)NSArray *musicArr;
@end

　viewDidLoad实例化数组:

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.musicArr=@[@"潮湿的心.mp3",@"爱拼才会赢.mp3",@"给我一个理由忘记.mp3"];
    [self prepareMusic:self.musicArr[1]];
}
- (void)prepareMusic:(NSString *)path{
    //1.音频文件的url路径
    NSURL *url=[[NSBundle mainBundle]URLForResource:path withExtension:Nil];
    
    //2.实例化播放器
    _player=[[AVAudioPlayer alloc]initWithContentsOfURL:url error:Nil];
    
    //3.缓冲
    [_player prepareToPlay];
}

4.四个对应事件的代码:

随机：

- (IBAction)random:(id)sender {
    [self prepareMusic:self.musicArr[arc4random()%3]];
    [_player play];
}

播放:

- (IBAction)play:(id)sender {
    //播放
    [_player play];
}

暂停:

- (IBAction)pause:(id)sender {
    //暂停
    [_player pause];
}

停止:

- (IBAction)stop:(id)sender {
    //停止
    [_player stop];
}

5.设置循环次数，开始播放时间，设置音量

  //设置音量
    [_player setVolume:0.6];
    //设置当前播放事件
    [_player setCurrentTime:60];
    //设置循环次数
    [_player setNumberOfLoops:2];

MusicViewController.m中的代码:

//
//  MusicViewController.m
//  MyPicture
//
//  Created by keso on 15/1/17.
//  Copyright (c) 2015年 keso. All rights reserved.
//
 
#import "MusicViewController.h"
#import <AVFoundation/AVFoundation.h>
 
 
@interface MusicViewController ()
@property (nonatomic,strong)AVAudioPlayer *player;
@property (nonatomic,strong)NSArray *musicArr;
@end
 
@implementation MusicViewController
 
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.musicArr=@[@"潮湿的心.mp3",@"爱拼才会赢.mp3",@"给我一个理由忘记.mp3"];
    [self prepareMusic:self.musicArr[1]];
}
- (void)prepareMusic:(NSString *)path{
    //1.音频文件的url路径
    NSURL *url=[[NSBundle mainBundle]URLForResource:path withExtension:Nil];
    
    //2.实例化播放器
    _player=[[AVAudioPlayer alloc]initWithContentsOfURL:url error:Nil];
    
    //3.缓冲
    [_player prepareToPlay];
    //设置音量
    [_player setVolume:0.6];
    //设置当前播放事件
    [_player setCurrentTime:60];
    //设置循环次数
    [_player setNumberOfLoops:2];
}
- (IBAction)random:(id)sender {
    [self prepareMusic:self.musicArr[arc4random()%3]];
    [_player play];
}
- (IBAction)play:(id)sender {
    //播放
    [_player play];
}
 
- (IBAction)stop:(id)sender {
    //停止
    [_player stop];
}
- (IBAction)pause:(id)sender {
    //暂停
    [_player pause];
}
 
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
 
/*
#pragma mark - Navigation
 
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/
 
@end