我正在尝试将seektotime与Pangesture识别器一起使用。但它没有按预期进行搜索。lettotalTime=self.avPlayer.currentItem!.durationprint("time:\(CMTimeGetSeconds(totalTime))")self.avPlayer.pause()lettouchDelta=swipeGesture.translationInView(self.view).x/CGFloat(CMTimeGetSeconds(totalTime))letcurrentTime=CMTimeGetSeconds((avPlayer.

通过使用此代码AVPlayerItem*playerItem=[AVPlayerItemplayerItemWithURL:selectedVideoUrl];CMTimeduration=playerItem.duration;floatseconds=CMTimeGetSeconds(duration);NSLog(@"duration:%.2f",seconds);错误Undefinedsymbolsforarchitecturearmv7:"_CMTimeGetSeconds",referencedfrom:-[VideoUploadimagePickerController: