下面就使用AVAudioPlayer实现一个简单播放器，在这个播放器中实现了播放、暂停、显示播放进度功能。
#import "ViewController.h" #import <AVFoundation/AVFoundation.h> #define kMusicFile @"刘若英 - 原来你也在这里.mp3" #define kMusicSinger @"刘若英" #define kMusicTitle @"原来你也在这里" @interface ViewController ()<AVAudioPlayerDelegate> @property (nonatomic,strong) AVAudioPlayer *audioPlayer;//播放器 @property (weak, nonatomic) IBOutlet UILabel *controlPanel; //控制面板 @property (weak, nonatomic) IBOutlet UIProgressView *playProgress;//播放进度 @property (weak, nonatomic) IBOutlet UILabel *musicSinger; //演唱者 @property (weak, nonatomic) IBOutlet UIButton *playOrPause; //播放/暂停按钮(如果tag为0认为是暂停状态，1是播放状态) @property (weak ,nonatomic) NSTimer *timer;//进度更新定时器 @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; [self setupUI]; } /** * 初始化UI */ -(void)setupUI{ self.title=kMusicTitle; self.musicSinger.text=kMusicSinger; } -(NSTimer *)timer{ if (!_timer) { _timer=[NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(updateProgress) userInfo:nil repeats:true]; } return _timer; } /** * 创建播放器 * * @return 音频播放器 */ -(AVAudioPlayer *)audioPlayer{ if (!_audioPlayer) { NSString *urlStr=[[NSBundle mainBundle]pathForResource:kMusicFile ofType:nil]; NSURL *url=[NSURL fileURLWithPath:urlStr]; NSError *error=nil; //初始化播放器，注意这里的Url参数只能时文件路径，不支持HTTP Url _audioPlayer=[[AVAudioPlayer alloc]initWithContentsOfURL:url error:&error]; //设置播放器属性 _audioPlayer.numberOfLoops=0;//设置为0不循环 _audioPlayer.delegate=self; [_audioPlayer prepareToPlay];//加载音频文件到缓存 if(error){ NSLog(@"初始化播放器过程发生错误,错误信息:%@",error.localizedDescription); return nil; } } return _audioPlayer; } /** * 播放音频 */ -(void)play{ if (![self.audioPlayer isPlaying]) { [self.audioPlayer play]; self.timer.fireDate=[NSDate distantPast];//恢复定时器 } } /** * 暂停播放 */ -(void)pause{ if ([self.audioPlayer isPlaying]) { [self.audioPlayer pause]; self.timer.fireDate=[NSDate distantFuture];//暂停定时器，注意不能调用invalidate方法，此方法会取消，之后无法恢复 } } /** * 点击播放/暂停按钮 * * @param sender 播放/暂停按钮 */ - (IBAction)playClick:(UIButton *)sender { if(sender.tag){ sender.tag=0; [sender setImage:[UIImage imageNamed:@"playing_btn_play_n"] forState:UIControlStateNormal]; [sender setImage:[UIImage imageNamed:@"playing_btn_play_h"] forState:UIControlStateHighlighted]; [self pause]; }else{ sender.tag=1; [sender setImage:[UIImage imageNamed:@"playing_btn_pause_n"] forState:UIControlStateNormal]; [sender setImage:[UIImage imageNamed:@"playing_btn_pause_h"] forState:UIControlStateHighlighted]; [self play]; } } /** * 更新播放进度 */ -(void)updateProgress{ float progress= self.audioPlayer.currentTime /self.audioPlayer.duration; [self.playProgress setProgress:progress animated:true]; } #pragma mark - 播放器代理方法 -(void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{ NSLog(@"音乐播放完成..."); } @end