iOS 语音循环播放设置

本地文件、网络文件，区别就是URL创建方式

1、使用AVPlayerItem与AVPlayer（这个简单，只需要设置回调），而不是AVAudioPlayer（这个麻烦，需要设置代理、计时器等等）

2、设置AVPlayerItem的url，然后AVPlayer播放这个AVPlayerItem，在AVPlayer播放AVPlayerItem回调读取播放完毕后，重新设置进度，具体如图

NSString *document= $NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)firstObject$ ;

NSString *audioPath = $document stringByAppendingPathComponent:@"voice"$ ;

NSString *toUrl = $audioPath stringByAppendingPathComponent:self.filepatch$ ;

NSURL *musicURL = $NSURL fileURLWithPath:toUrl$ ;

NSError *error;

self.player = $\[AVPlayer alloc$ initWithPlayerItem:nil];

AVPlayerItem * songItem = $\[AVPlayerItem alloc$ initWithURL:musicURL];

__weak typeof(songItem) weakSong =songItem;

$self.player replaceCurrentItemWithPlayerItem:songItem$ ;

self.player.volume = 1.0;

weakify(self)

[_player addPeriodicTimeObserverForInterval:CMTimeMakeWithSeconds(1, 1) queue:NULL usingBlock:^(CMTime time) {

//进度当前时间/总时间

wSelf.progress.progress =CMTimeGetSeconds(wSelf.player.currentItem.currentTime)/CMTimeGetSeconds(wSelf.player.currentItem.duration);

NSLog(@"per:%f-%f",CMTimeGetSeconds(wSelf.player.currentItem.currentTime),CMTimeGetSeconds(wSelf.player.currentItem.duration));

if ( wSelf.progress.progress==1) {

$weakSong seekToTime:kCMTimeZero$ ;

$wSelf.player play$ ;

}

wSelf.label.text = $NSString stringWithFormat:@"%.2f秒\|%.2f秒",CMTimeGetSeconds(wSelf.player.currentItem.currentTime),CMTimeGetSeconds(wSelf.player.currentItem.duration)$ ;

}];

$self.player play$ ;