播放器（仿腾讯微博)

#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
@interface RootViewController : UIViewController
<AVAudioPlayerDelegate>
{
    //存放歌曲数组
    NSMutableArray *musicArray;
    //名字所在的label
    UILabel * musicNameLabel;
    //播放器
    AVAudioPlayer * _player;
    //进度后的背景色
    UIView * overLayView;
    //声音控制
    UISlider * volumeSlider;
    //歌曲进度
    UISlider * progressSlider;
    //语音所在的灰色背景
    UIView * functionView;
    //前一首按钮
    UIButton * prevButton;
    //播放按钮
    UIButton * playButton;
    //下一首按钮
    UIButton * nextButton;
    //重播按钮
    UIButton * repeatButton;
    //歌曲播放的时间
    UILabel *startTime;
    //歌曲剩下的时间
    UILabel * currentTime;
    
    //存放歌曲在数组中的当前位置
    NSInteger currentIndex;
    NSTimer *timer;
    
    //图片框以及里面的图片
    UIView *transitionView;
    //灰色的图
    UIImageView * borderView;
    //中间的空间图片
    UIView * middleView;
    
}
@end

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    self.navigationController.navigationBarHidden=YES;
    
    //歌曲所在的数组
    musicArray=[[NSMutableArray alloc] initWithObjects:@"一眼万年",@"中国话", @"夜曲",@"三寸天堂",nil];
    
    //设置背景色
    UIImage *image=[UIImage imageNamed:@"audio_bg.png"];
    self.view.backgroundColor =[UIColor colorWithPatternImage:image];
    
    
    //显示歌曲的名字
    UIView *navView=[[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
    navView.backgroundColor=[UIColor clearColor];
    navView.alpha=0.9;
    [self.view  addSubview:navView];
   
    //歌曲的名字所在的label
    musicNameLabel=[[UILabel alloc] initWithFrame:CGRectMake(80, 0, 160, 44)];
    musicNameLabel.backgroundColor=[UIColor clearColor];
    musicNameLabel.textColor=[UIColor blackColor];
    musicNameLabel.text = [musicArray objectAtIndex:0];
    musicNameLabel.font=[UIFont boldSystemFontOfSize:12];
    musicNameLabel.textAlignment=NSTextAlignmentCenter;

    [navView addSubview:musicNameLabel];
    
    //歌曲的地址
    NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:[musicArray objectAtIndex:0] ofType:@"mp3"]];
    
    _player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
    //准备播放，先提前把缓存准备好.
    [_player prepareToPlay];
    //开启变速功能
    _player.enableRate = YES;
    _player.delegate = self;
    [self playerViewInit];
    
}
#pragma -mark -functions
//设置播放器的画面的排版
-(void)playerViewInit{
    //进度后的背景色
    overLayView=[[UIView alloc] initWithFrame:CGRectMake(0.0f, 44.0f, 320.0f, 80.0f)];
    overLayView.backgroundColor=[UIColor colorWithWhite:0.1f alpha:0.2f];
    overLayView.hidden=NO;
    [self.view addSubview:overLayView];
    
    //声音调节
    volumeSlider=[[UISlider alloc]initWithFrame:CGRectMake(20.0f, 20.0f, 250.0f, 30.0f)];
    volumeSlider.backgroundColor=[UIColor clearColor];
    [volumeSlider setThumbImage:[UIImage imageNamed:@"com_thumb_max_h.png"] forState:UIControlStateNormal];
    [volumeSlider setMinimumTrackImage:[[UIImage imageNamed:@"com_slider_min_l.png"]stretchableImageWithLeftCapWidth:10 topCapHeight:0] forState:UIControlStateNormal];
    volumeSlider.alpha=0.6f;
    volumeSlider.minimumValue=0.0f;
    volumeSlider.maximumValue=1.0f;
    volumeSlider.value=0.2f;
    [volumeSlider addTarget:self action:@selector(doClickChangeVolume) forControlEvents:UIControlEventValueChanged];
    volumeSlider.minimumValueImage=[UIImage imageNamed:@"cell_radio_speaker.png"];
    
    [overLayView addSubview:volumeSlider];
    _player.volume = volumeSlider.value;
    
    
    
    //语音后的黑色按钮
    functionView=[[UIView alloc]initWithFrame:CGRectMake(0, 460-90, 320, 90)] ;
    functionView.backgroundColor=[UIColor colorWithWhite:0.1f alpha:0.2f];
    [self.view addSubview:functionView];
    
    //前一首按钮
    prevButton=[UIButton buttonWithType:UIButtonTypeCustom];
    prevButton.frame=CGRectMake(50, 10.0f, 40.0f, 40.0f);
    [prevButton setImage:[UIImage imageNamed:@"audio_btn_pre_h.png"] forState:UIControlStateNormal];
    [prevButton setImage:[UIImage imageNamed:@"audio_btn_pre_n.png"] forState:UIControlStateHighlighted];
    [prevButton addTarget:self action:@selector(doClickPrevButton:) forControlEvents:UIControlEventTouchUpInside];
    [functionView addSubview:prevButton];
    
    //播放按钮
    playButton=[UIButton buttonWithType:UIButtonTypeCustom];
    playButton.frame=CGRectMake(140, 10.0f, 40.0f, 40.0f);
    playButton.tag = 10;
    [playButton setImage:[UIImage imageNamed:@"audio_btn_play_h.png"] forState:UIControlStateNormal];
    [playButton addTarget:self action:@selector(doClickPlayButton:) forControlEvents:UIControlEventTouchUpInside];
    [functionView addSubview:playButton];
  
    //后一首按钮
    nextButton=[UIButton buttonWithType:UIButtonTypeCustom];
    nextButton.frame=CGRectMake(230.0f, 10.0f, 40.0f, 40.0f);
    [nextButton setImage:[UIImage imageNamed:@"audio_btn_next_h.png"] forState:UIControlStateNormal];
    [nextButton setImage:[UIImage imageNamed:@"audio_btn_next_n.png"] forState:UIControlStateHighlighted];
    [nextButton addTarget:self action:@selector(doClickNextButton:) forControlEvents:UIControlEventTouchUpInside];
    [functionView addSubview:nextButton];
    
    //音量控制条
    progressSlider =[[UISlider alloc]initWithFrame:CGRectMake(50.0f, 55.0f, 230.0f, 20.0f)];
    progressSlider.minimumValue=0.0f;
    progressSlider.maximumValue=1.0f;
    progressSlider.backgroundColor=[UIColor clearColor];
    [progressSlider setThumbImage:[UIImage imageNamed:@"com_thumb_max_h.png"] forState:UIControlStateNormal];
    [progressSlider setMinimumTrackImage:[[UIImage imageNamed:@"com_slider_min_l.png"] stretchableImageWithLeftCapWidth:10 topCapHeight:0]forState:UIControlStateNormal];
    [progressSlider addTarget:self action:@selector(doClickProgressButton) forControlEvents:UIControlEventValueChanged];
    [functionView addSubview:progressSlider];
    
    
    //重复按钮
    repeatButton=[UIButton buttonWithType:UIButtonTypeCustom];
    repeatButton.frame=CGRectMake(5.0f, 20.0f, 30.0, 30.0f);
    repeatButton.tag=20;
    [repeatButton setImage:[UIImage imageNamed:@"audio_btn_random_h.png"] forState:UIControlStateNormal];
    [repeatButton addTarget:self action:@selector(doClickRepeatButton:) forControlEvents:UIControlEventTouchUpInside];
    [functionView addSubview:repeatButton];
    
    //开始播放时间
    startTime=[[UILabel alloc] initWithFrame:CGRectMake(10.0f, 50.0f, 40.0f, 30.0)];
    startTime.backgroundColor=[UIColor clearColor];
    startTime.text=[NSString stringWithFormat:@"%02d:%02d",0,0];
    startTime.textColor=[UIColor whiteColor];
    startTime.font=[UIFont systemFontOfSize:13.0f];
    [functionView addSubview:startTime];
    
    //歌曲当前的剩下的时间
    currentTime=[[UILabel alloc]initWithFrame:CGRectMake(285.0f, 50.0f, 40.0f, 30.0f)];
    currentTime.backgroundColor=[UIColor clearColor];
    currentTime.text=[NSString stringWithFormat:@"%02d:%02d",0,0];
    currentTime.font=[UIFont systemFontOfSize:13.0f];
    currentTime.textColor=[UIColor whiteColor];
    [functionView addSubview:currentTime];
    
    //中间的空间背景图
    transitionView=[[UIView alloc] initWithFrame:CGRectMake(0, 88, 320, 416-90-44)];
    [self.view addSubview:transitionView];
  
    //边框
    borderView=[[UIImageView alloc]initWithFrame:CGRectMake(60.0f, 90.0f-44.0f, 200.0f, 200.0f)];
    borderView.image=[UIImage imageNamed:@"audio_cover_bg.png"];
    borderView.tag=200;
    transitionView.userInteractionEnabled=YES;
    [transitionView addSubview:borderView];
    
    //空间图
    middleView=[[UIView alloc]initWithFrame:CGRectMake(15.0f, 15.0f, 170.0f, 170.0f)];
    middleView.backgroundColor=[UIColor colorWithPatternImage:[UIImage imageNamed:@"audio_album_default.png"]];
    middleView.alpha=1.0f;
    middleView.tag=201;
    [borderView addSubview:middleView];
  
    
    UITapGestureRecognizer *tapGes=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGes)];
    [transitionView addGestureRecognizer:tapGes];

}
#pragma -mark -AVAudioPlayerDelegate
-(void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{
    currentIndex++;
    if (currentIndex == musicArray.count) {
        currentIndex = 0;
    }
    
    [self loadMusic:[musicArray objectAtIndex:currentIndex] type:@"mp3"];
    musicNameLabel.text = [musicArray objectAtIndex:currentIndex];
    [_player play];
}
#pragma -mark -functions
-(void)loadMusic:(NSString*)name type:(NSString*)type
{
    NSString* path= [[NSBundle mainBundle] pathForResource: name ofType:type];
    
    NSURL* url = [NSURL fileURLWithPath:path];
    
    _player= [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
    _player.delegate=self;
    _player.volume= volumeSlider.value;
    [_player prepareToPlay];
    
}
#pragma -mark -doClickActions
//点击背景图的时候，歌曲进度所在的部分隐藏
-(void)tapGes{
    if (overLayView.hidden == YES) {
        overLayView.hidden = NO;
    }else{
        overLayView.hidden = YES;
    }
}
//声音播放的条
-(void)doClickProgressButton{
    _player.volume = volumeSlider.value;
 
}
//前一首歌曲
-(void)doClickPrevButton:(UIButton *)sender{
    BOOL playFlag;
    if (_player.playing) {
        playFlag = YES;
        [_player stop];
    }else{
        playFlag = NO;
    }
    currentIndex--;
    if (currentIndex < 0) {
        currentIndex =musicArray.count - 1;
    }
    [self loadMusic:[musicArray objectAtIndex:currentIndex] type:@"mp3"];
    musicNameLabel.text = [musicArray objectAtIndex:currentIndex];
    if (playFlag == YES) {
        [_player play];
    }
}
//刷新进度条
-(void)refresh{
    progressSlider.value = _player.currentTime/_player.duration;
    startTime.text =   [NSString stringWithFormat:@"%02d:%02d",(int)_player.currentTime/60,(int)_player.currentTime%60];
    currentTime.text = [NSString stringWithFormat:@"%d:%02d",(int)(_player.duration-_player.currentTime)/60,(int)(_player.duration-_player.currentTime)%60];
}
//播放按钮
-(void)doClickPlayButton:(UIButton *)sender{
    if (_player.playing) {
        [_player pause];
        [playButton setImage:[UIImage imageNamed:@"audio_btn_play_h.png"] forState:UIControlStateNormal];
        [timer invalidate];
    }else{
        [_player play];
        [playButton setImage:[UIImage imageNamed:@"audio_btn_pause_h.png"] forState:UIControlStateNormal];
        //更新下进度条
        timer = [NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(refresh) userInfo:nil repeats:YES];
    }
}
//下一首按钮
-(void)doClickNextButton:(UIButton *)sender{
    BOOL playFlag;
    if (_player.playing) {
        playFlag = YES;
        [_player stop];
    }else{
        playFlag = NO;
    }
    currentIndex++;
    if (currentIndex == musicArray.count) {
        currentIndex = 0;
    }
    [self loadMusic:[musicArray objectAtIndex:currentIndex] type:@"mp3"];
    
    musicNameLabel.text = [musicArray objectAtIndex:currentIndex];
    
    if (playFlag == YES) {
        [_player play];
    }
    
}
//重复按钮
-(void)doClickRepeatButton:(UIButton *)sender{
    ;
}
//进度按钮
-(void)doClickChangeVolume{
    _player.currentTime = _player.duration *progressSlider.value;
}

@end