UICollectionView第一個單元格比tvOS上的其他單元格加載更大

所以我有一個UICollectionView，我已經做了這樣的事情，當焦點改變到新的單元格時，單元格中的圖像展開。由於某種原因，儘管每次UICollectionView加載第一個單元比其餘的單元大（見下面的截圖）。我怎樣才能阻止它做到這一點？UICollectionView第一個單元格比tvOS上的其他單元格加載更大

我對焦點的改變過形象代碼：

- (void)collectionView:(UICollectionView *)collectionView didUpdateFocusInContext:(UICollectionViewFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator { 

    NSIndexPath *previousIndexPath = context.previouslyFocusedIndexPath; 
    NSIndexPath *indexPath = context.nextFocusedIndexPath; 

    TrophyCollectionViewCell *previousCell = (TrophyCollectionViewCell *)[collectionView cellForItemAtIndexPath:previousIndexPath]; 
    TrophyCollectionViewCell *cell = (TrophyCollectionViewCell *)[collectionView cellForItemAtIndexPath:indexPath]; 

    [UIView animateWithDuration:0.3 animations:^{ 

     if (previousCell.trophyImageView != nil) { 
      previousCell.trophyImageView.transform = CGAffineTransformMakeScale(1.0f, 1.0f); 
     } 

     if (cell.trophyImageView != nil) { 
      cell.trophyImageView.transform = CGAffineTransformMakeScale(1.2f, 1.2f); 
     } 

     if (previousCell.resetImageView != nil) { 
      previousCell.resetImageView.transform = CGAffineTransformMakeScale(1.0f, 1.0f); 
     } 

     if (cell.resetImageView != nil) { 
      cell.resetImageView.transform = CGAffineTransformMakeScale(1.2f, 1.2f); 
     } 

    }]; 

}

除了這個我已經影響了細胞的大小沒有其他代碼。

來源

2017-04-04 william205