[AVPlayerItem seekToTime:toleranceBefore:toleranceAfter:completionHandler:] Seeking is not possib...

上周游戏新版本发布，新版本iOS提交上去，过审释放之后，看了一下bugly，一大片[AVPlayerItem seekToTime:toleranceBefore:toleranceAfter:completionHandler:] Seeking is not possible to time {INVALID}错误，经过查找答案之后，找出原因：

[self.moviePlayer seekToTime:_curTime toleranceBefore:kCMTimeZero toleranceAfter:kCMTimeZero completionHandler:^(BOOL finished) {
                    if (finished) {
                        [self.moviePlayer play];
                    }
                }];

原来这段代码在切后台回到前端的时候是有可能出现异常的。后修改如下：

@try
{
      if (CMTIME_IS_VALID(_curTime))
      {
           [self.moviePlayer seekToTime:_curTime toleranceBefore:kCMTimeZero toleranceAfter:kCMTimeZero completionHandler:^(BOOL finished) {
               if (finished) {
                    [self.moviePlayer play];
                }
            }];
       }else{
            [self.moviePlayer play];
       }
}
@catch (NSException * exception) {
      [self.moviePlayer play];
}

记录一下，防止下次踩坑