oc中用Avaudio做的简单播放器界面

1 建立工程，并将所用到的音频，图片等文件加入到工程中去。

2写入代码

//
//  ViewController.m
//  avaudio
//
//  Created by apple on 14-7-18.
//  Copyright (c) 2014年 无名. All rights reserved.
//

#import "ViewController.h"
#import <AVFoundation/AVFoundation.h>

@interface ViewController ()<AVAudioPlayerDelegate>
{
    int  index,di,i,ki,dd;
    UIImageView *pic;
    AVAudioPlayer *player;
    NSArray *list,*soundpicture;
   //定义一个定时器的变量
    NSTimer *t1;
    UIButton *but,*but4;
    double a;
    int random[100];
}
@property (weak, nonatomic) IBOutlet UISlider *proceed;
@property (weak, nonatomic) IBOutlet UILabel *label2;
@property (weak, nonatomic) IBOutlet UISlider *sound;
@property (weak, nonatomic) IBOutlet UILabel *starttime;
@property (weak, nonatomic) IBOutlet UILabel *remaintime;
@property (weak, nonatomic) IBOutlet UIButton *model;

@end


@implementation ViewController

-(void)createbutton
{
    //对歌曲图面这个空间初始化
    pic=[[UIImageView alloc] initWithFrame:CGRectMake(20, 125, 280, 240)];
    [self.view addSubview:pic];
    //播放暂停按钮
   but=[UIButton buttonWithType:UIButtonTypeCustom];
    but.frame=CGRectMake(125, 430,45,45);
    [but setImage:[UIImage imageNamed:@"3"] forState:UIControlStateNormal];
    [but addTarget:self action:@selector(didplayer:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:but];
    //下一曲按钮
    UIButton *but1=[UIButton buttonWithType:UIButtonTypeCustom];
    but1.frame=CGRectMake(220, 430,45,45);
     [but1 setImage:[UIImage imageNamed:@"6"] forState:UIControlStateNormal];
    [but1 addTarget:self action:@selector(didnext:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:but1];
    //上一曲按钮
    UIButton *but2=[UIButton buttonWithType:UIButtonTypeCustom];
    but2.frame=CGRectMake(30, 430,45,45);
   [but2 setImage:[UIImage imageNamed:@"4"] forState:UIControlStateNormal];
    [but2 addTarget:self action:@selector(didprevious:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:but2];
    //停止按钮
    UIButton *but3=[UIButton buttonWithType:UIButtonTypeCustom];
    but3.frame=CGRectMake(125, 480,45,45);
    [but3 setImage:[UIImage imageNamed:@"5"] forState:UIControlStateNormal];
    [but3 addTarget:self action:@selector(didstop:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:but3];
    //声音控制按钮
    but4=[UIButton buttonWithType:UIButtonTypeCustom];
    but4.frame=CGRectMake(45, 42,25,25);
    [but4 setImage:[UIImage imageNamed:@"9"] forState:UIControlStateNormal];
    [but4 addTarget:self action:@selector(controlvoice:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:but4];
}

//停止播放，进度条为零，播放按钮为暂停图标
-(void)didstop:(UIButton *)sender
{
    [player stop];
    player.currentTime=0;
    [but setImage:[UIImage imageNamed:@"3"] forState:UIControlStateNormal];
}
//播放或暂停
-(void)didplayer:(UIButton *)sender
{
  if(~di)
  {
      [self createplay];
      [but setImage:[UIImage imageNamed:@"2"] forState:UIControlStateNormal];
      
  }
      else
  {
      [player pause];
      [but setImage:[UIImage imageNamed:@"3"] forState:UIControlStateNormal];
     
  }
      di=~di;
    
}
//下一曲
-(void)didnext:(UIButton *)sender
{
    if(ki==0||ki==1)
    {
      if(index==list.count-1)
          index=0;
      else
          index++;
    }
    else if (ki==2)
    {
        random[dd]=index;
      index=arc4random()%15;
        dd++;
    }
    //下一曲后进度条清零，这一步骤必须放在播放之前，即在[self createplay]之前
    self.proceed.value=0;
    [self createplay];
}
//上一曲
-(void)didprevious:(UIButton *)sender
{
     if(ki==0||ki==1)
     {
     if(index==0)
        index=list.count-1;//一定要注意 减一，否则就溢出。
      else index--;
     }
    if(ki==2)
    {
        if(dd!=0)
        {
            index=random[dd-1];
            dd--;
        }
        else index=arc4random()%15;
    }
       //上一曲后 进度条清零，，这一步骤必须放在播放之前，即在[self createplay]之前
    self.proceed.value=0;
    [self createplay];
}
//播放文件的产生
-(void)createplay
{
    NSString *name=list[index];
    NSString *picture=soundpicture[index];
    pic.image=[UIImage imageNamed:picture];
   
    //1获取资源文件的文件路径
    NSString *path=[[NSBundle mainBundle] pathForResource:name ofType:@"mp3"];
 
    //2. 将文件读取到内存中
    //NSData *data = [NSData dataWithContentsOfFile:path];
    //3. 创建一个播放器对象
    //player = [[AVAudioPlayer alloc] initWithData:data error:nil];
    //网络地址用下面的方法
    //[NSURL URLWithString:@"http://www.baidu.com"];
 
    //4从文件路径生产一个URL对象
    NSURL *url=[NSURL fileURLWithPath:path];
   
    //AVAudioPlayer只能播放本地文件
    player=[[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
    //?????
    player.delegate=self;
    player.volume=0.5;
    
    //这条语句使暂停后在播放，会接着你暂停的点播放，而不是从头开始播放。
    player.currentTime=self.proceed.value*player.duration;
    
    //播放准备
    [player prepareToPlay];
    [player play];
    
    //显示歌名
    self.label2.text=name;
    
    //时钟，每隔0.1s执行一次times
    t1=[NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(times) userInfo:nil repeats:YES];
}
//每隔0.1秒执行的函数
-(void)times
{
    //滑动条的值等于歌曲正在播放时间的值/该歌曲的总时间。
    //从而形成了进度条
    self.proceed.value=player.currentTime/player.duration;
 
    //显示开始的时间
    int startminute=(int)player.currentTime/60;
    int statesecond=(int)player.currentTime%60;
    self.starttime.text=[NSString stringWithFormat:@"%02d:%02d",startminute,statesecond];
  
    //显示剩余时间
    int remainminute=(int)(player.duration-player.currentTime)/60;
    int remainsecond=(int)(player.duration-player.currentTime)%60;
    self.remaintime.text=[NSString stringWithFormat:@"%02d:%02d",remainminute,remainsecond];
    
}

- (void)viewDidLoad {
    [super viewDidLoad];
    
    //将歌名存入list的数组中
    list=@[@"陈奕迅一丝不挂",@"陈奕迅 - 淘汰",@"陈奕迅 - 单车",@"陈奕迅 - 不要说话",@"陈柏宇 - 你瞒我瞒",@"周杰伦 安静",@"王杰 - 不浪漫罪名",@"王力宏 Can you feel my world",@"林俊杰 不死之身 ",@"卡农  钢琴曲 ",@"海鸣威  老人与海 ",@"付辛博  这一刻，爱吧 ",@"林俊杰 第二天堂",@"庞龙 兄弟抱一下",@"孙燕姿 遇见"];
   
    //将片存入数组中去
    soundpicture=@[@"一丝不挂",@"淘汰",@"单车",@"不要说话",@"你瞒我瞒",@"安静",@"不浪漫的罪名",@"can yon feel my world",@"不死之身",@"卡农",@"老人与海",@"这一刻爱吧",@"第二天堂",@"兄弟抱一下",@"遇见"];
    [self createbutton];
   
    //初始化进度条
    self.proceed.value=0;
   //arc4random
}

//歌曲播放完了执行
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
    if(ki==0)
    {
      index++;
      if (index==list.count)
      {
        index=0;
      }
    }
    //随机播放模式
    else  if(ki==2)
    {
        index=arc4random()%15;
    }
    //停止计时器
    [t1 invalidate];
    //播放完后是进度条清零，这一步骤必须放在播放之前，即在[self createplay]之前
    self.proceed.value=0;
    [self createplay];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

//歌曲进度条控制
- (IBAction)proceeding:(UISlider *)sender {
    player.currentTime=sender.value*player.duration;
}

//声音进度条的控制
- (IBAction)voice:(UISlider *)sender {
    player.volume=sender.value;
    
}
//声音的静音与还原
- (IBAction)controlvoice:(UIButton *)sender {
    
    if (~i)
    {
        player.volume=0;
        [but4 setImage:[UIImage imageNamed:@"8"] forState:UIControlStateNormal];
    }
    else
    {
        player.volume=self.sound.value;
        [but4 setImage:[UIImage imageNamed:@"9"] forState:UIControlStateNormal];
    }
    i=~i;
}
- (IBAction)nodel:(UIButton *)sender {
    if (ki==0) {
        [_model setTitle:@"单曲循环" forState:UIControlStateNormal];
        ki++;
    }
    else  if(ki==1)
    {
        [_model setTitle:@"随机播放" forState:UIControlStateNormal];
        ki++;
    }
    else   if(ki==2)
    {
        [_model setTitle:@"顺序播放" forState:UIControlStateNormal];
        ki=0;
    }
}

@end

直接注意的时记得加入头文件

#import <AVFoundation/AVFoundation.h>

得到的结果为：