最近專案中要簡單用到一寫線上播放和本地播放的技術，其中包括一段錄音的定位精確播放：
//self.dianDuModel.audioStartPos:錄音的起始播放時間毫秒單位
//toleranceBefore：從哪開始找
//toleranceAfter：找到哪兒結束，設定引數有利於快速查詢
[self.player seekToTime:CMTimeMake(self.dianDuModel.audioStartPos/1000, 1) toleranceBefore:kCMTimeZero toleranceAfter:CMTimeMake(self.dianDuModel.audioStartPos/1000, 1) completionHandler:^(BOOL finished) {
//找到後播放
[weakSelf.player play];
}];
複製程式碼播放到什麼時間停止:
@property (strong, nonatomic) id timeObser;
self.timeObser = [self.player addPeriodicTimeObserverForInterval:CMTimeMake(1, 1) queue:dispatch_get_main_queue() usingBlock:^(CMTime time) {
// CMTime timeEnd = CMTimeMake(dianDuModel.audioEndPos, 1000);
//當前播放的時間
CGFloat current = CMTimeGetSeconds(time);
NSLog(@"current:%f --- audioEndPos :%ld",current,self.dianDuModel.audioEndPos/1000);
if (current >= (self.dianDuModel.audioEndPos/1000)) {
[weakSelf.player pause];
}
}];
//頁面退出時需要釋放掉self.timeObser:[self.player removeTimeObserver:self.timeObser];複製程式碼