AVPlayer音频播放--进度的坑

以下是我对音频播放插件的设计图

1585040056731.jpg

//只能播放单个资源
[AVPlayer playerWithURL:[NSURL URLWithString:url]]; 

//增加监听

//秒轮询监听
- (void)addPeriodicTimeObserver {
    // Invoke callback every half second
    CMTime interval = CMTimeMakeWithSeconds(1, NSEC_PER_SEC);
    // Queue on which to invoke the callback
    dispatch_queue_t mainQueue = dispatch_get_main_queue();
    // Add time observer
    self.timeObserverToken =
        [self.player addPeriodicTimeObserverForInterval:interval
                                                  queue:mainQueue
                                             usingBlock:^(CMTime time) {
            // Use weak reference to self
            // Update player transport UI
            double currentTime = CMTimeGetSeconds(time);
            NSLog(@"%f",currentTime);

//由于是边播放边下载进度和总时长都是不正常的
            //进度 当前时间/总时间
            currentTime = CMTimeGetSeconds(sSelf.player.currentItem.currentTime);
            double duration = CMTimeGetSeconds(sSelf.player.currentItem.duration);
            double progress = currentTime/ duration;
            NSLog(@"%f:%f:%f",currentTime,duration,progress);
//            if ([NSValue valueWithCMTime:currentTime]==1) {
//                NSLog(@"success");
//            }
        }];
}

//百分比轮询监听
//由于是边播放边下载,百分比是不正常的
- (void)addBoundaryTimeObserver {
    NSMutableArray *times = [NSMutableArray array];
 
    // Set initial time to zero
    CMTime currentTime = kCMTimeZero;
    // Get asset duration
    CMTime assetDuration = self.player.currentItem.duration;
    // Divide the asset duration into quarters
    CMTime interval = CMTimeMultiplyByFloat64(assetDuration, 0.25);
 
    // Build boundary times at 25%, 50%, 75%, 100%
    while (CMTIME_COMPARE_INLINE(currentTime, <, assetDuration)) {
        currentTime = CMTimeAdd(currentTime, interval);
        [times addObject:[NSValue valueWithCMTime:currentTime]];
    }
    __weak typeof(self) wSelf = self;
    // Add time observer
    self.timeObserverToken =
        [self.player addBoundaryTimeObserverForTimes:times
                                               queue:dispatch_get_main_queue()
                                          usingBlock:^{
            // Use weak reference to self
            // Update user interface state
            __strong typeof(wSelf) sSelf = wSelf;
            NSLog(@"%f",sSelf.player.currentItem.currentTime.value/sSelf.player.currentItem.currentTime.timescale-NSTimeIntervalSince1970);
            NSLog(@"%@",times);
        }];
}

移除监听
- (void)removeBoundaryTimeObserver {
    if (self.timeObserverToken) {
        [self.player removeTimeObserver:self.timeObserverToken];
        self.timeObserverToken = nil;
    }
}