用戶點擊完成退出全屏後重新顯示視頻縮略圖 - 目標C

Question

我有一個使用UITableView的時間軸來顯示視頻縮略圖。用戶可以點擊一個視頻縮略圖，並打開全屏視頻並播放。當用戶點擊完成按鈕時，用戶返回到時間線。現在，視頻縮略圖消失了，用戶可以看到他們正在觀看的視頻以及他們離開的位置。我希望在用戶點擊完成按鈕的位置將它們帶回到時間軸，並在播放全屏視頻之前顯示視頻縮略圖圖像。下面是一些代碼：

 cell.imageView.image = [UIImage imageNamed:@"PlaceholderPhoto"]; 

     if (object) { 

      //The below line displays the users video thumbnail on the timeline. 
      //The following 2 lines is what fills the display cell that shows the photo. 
      cell.imageView.clipsToBounds = YES; 
      cell.imageView.contentMode = UIViewContentModeScaleAspectFill; 

      //The below line is what displays the video thumbnail on the home timeline. 
      cell.imageView.file = [object objectForKey:@"videoThumbnail"]; 
      [cell.imageView loadInBackground]; 

      PFFile *video =[object objectForKey:@"file"]; 
      [video getDataInBackgroundWithBlock:^(NSData *data, NSError *error) { 
       if (!error) { 
        NSString *string = [NSString stringWithFormat:@"cell%li.m4v", (long)cell.mediaItemButton.tag]; 
        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
        NSString *documentsDirectory = [paths objectAtIndex:0]; 
        NSString *appFile = [documentsDirectory stringByAppendingPathComponent:string]; 
        [data writeToFile:appFile atomically:YES]; 
        NSURL *movieUrl = [NSURL fileURLWithPath:appFile]; 
        //The below line is what displays the full size movie and plays it on the home timeline. 
        [cell.movie setContentURL:movieUrl]; 
       } 
      }]; 

     } 
     return cell; 

Answer 1

我能夠加入這行來mpmovieplayer完成按鈕做到這一點：

[self.tableView reloadData];