最近在弄一个相关播放音频的项目，网上已经有很多相关avplayer的讲解，这里就不多说了。直接上代码
初始化
+ (instancetype)manager{
static AVPlayerManager * manager;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
manager = [[AVPlayerManager alloc] init];
manager.player = [[AVPlayer alloc] init];
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setActive:YES error:nil];
[session setCategory:AVAudioSessionCategoryPlayback error:nil];
});
return manager;
}
播放音频
- (void)updateAVPlayer{
if (isRemoveNot) {
[self removeObserverNotify];
isRemoveNot = NO;
}
MusicModel *model;
model = self.musicList[_index];
_playingModel = model;
playerItem = [AVPlayerItem playerItemWithURL:[NSURL URLWithString:_playingModel.musicURL]];
[self.player replaceCurrentItemWithPlayerItem:playerItem];
[playerItem addObserver:self forKeyPath:@"status" options:NSKeyValueObservingOptionNew context:nil];
// 监听播放状态
@weakify(self);
@weakify(playerItem);
_playTimeObserver = [self.player addPeriodicTimeObserverForInterval:CMTimeMake(1, 20) queue:dispatch_get_main_queue() usingBlock:^(CMTime time) {
@strongify(self);
@strongify(playerItem);
float current = CMTimeGetSeconds(time);
float total = CMTimeGetSeconds(playerItem.duration);
if (current) {
self.progress = current;
self.totalProgress = total;
notify_refresh
}
}];
[[[NSNotificationCenter defaultCenter] rac_addObserverForName:AVPlayerItemDidPlayToEndTimeNotification object:nil] subscribeNext:^(NSNotification *notification) {
DebugLog(@"music play end!");
[self next];
[self pause];
}];
isRemoveNot = YES;
}
调整播放速率
//速率 rate 0.5~2.0 default 1
- (void)setPlayerSpeed:(float)rate{
[self.player setRate:rate];
}
快进快退秒速实现
//快进15秒
- (void)stepForward15Seconds{
[self.player.currentItem seekToTime:CMTimeMakeWithSeconds(self.player.currentItem.currentTime.value/self.player.currentItem.currentTime.timescale + 15, self.player.currentItem.currentTime.timescale) toleranceBefore:CMTimeMake(1, self.player.currentItem.currentTime.timescale) toleranceAfter:CMTimeMake(1, self.player.currentItem.currentTime.timescale)];
}
//快退15秒
- (void)stepReverse15Senconds{
[self.player.currentItem seekToTime:CMTimeMakeWithSeconds(self.player.currentItem.currentTime.value/self.player.currentItem.currentTime.timescale - 15, self.player.currentItem.currentTime.timescale)];
}
播放特定时间（拖动进度条）
- (void)setToTime:(CMTime)time{
[playerItem seekToTime:time];
}
附上demo代码，各位大神自己去研究吧~~核心代码