ios - collectionView刷新局部单元格，程序崩溃，

Question

需求是得到一个对象刷新到collectionView上

崩溃信息

Answer 1

Your picture has not been requested yet, so I left. You can first determine whether the image exists or is an array? If it is empty, continue execution

Answer 2

There is a problem with indexPath. Please output the NSLOG first and try again after adjusting the NSIndexpath

Answer 3

After you add result object, it is at the last position of the array and is not the position you want to replace, and the index is greater than the number of cells, so it crashes. Just use replaceObjectAtIndex: withObject: and it will be fine.