AVAudioPlayerz小示例

本人菜鸟,有不对的还望大神指正

首先需要AVFoundation框架的支持

//多媒体的框架

#import <AVFoundation/AVFoundation.h>

- (void)viewDidLoad {

    [superviewDidLoad];

    self.view.backgroundColor = [UIColorwhiteColor];

    

    //获得音频路径

    NSString * mp3String = [[NSBundlemainBundle]pathForResource:@"lalala"ofType:@"mp3"];

    NSURL * url = [NSURLfileURLWithPath:mp3String];

    //创建音频播放器对象

    _player = [[AVAudioPlayeralloc] initWithContentsOfURL:urlerror:nil];

    //创建定时器,实时更新进度

    [NSTimerscheduledTimerWithTimeInterval:0.5target:selfselector:@selector(timerClick)userInfo:nilrepeats:YES];

}

- (void)timerClick

{

    //获得播放的总时间

    float totalTime = _player.duration;

    //获得音频播放的当前时间

    float currentTime = _player.currentTime;

    self.ps.value = currentTime/totalTime;

    

}

- (IBAction)startBtn:(id)sender {

    //加载音频

    [_playerprepareToPlay];

    //播放音频

    [_player play];

    

}

- (IBAction)stopBtn:(id)sender {

    //停止播放

    [_player stop];

}

- (IBAction)volumesSlider:(id)sender {

    //调节音量

    UISlider * slider = (UISlider *)sender;

    [_player setVolume:slider.value];

}

- (IBAction)progressSlider:(id)sender {

    //播放进度

    UISlider * slider = (UISlider *)sender;

    //设置当前播放时间

    float currentTime = slider.value *_player.duration;

    [_player setCurrentTime:currentTime];

    

}

1. 调节系统音量，参见［Sources］：http://my.oschina.net/SoulJa/blog/510161?fromerr=zWP4Nfsz

2. 调节屏幕亮度，参见［Sources］：http://blog.sina.com.cn/s/blog_9693f61a0102uymd.html