Best practice to expand a cell animated in a section?

[PhilCai1993]

I've read #499 and #459 , But still quite confused.

The image above is a section controller, "cell2" is expanded when some extra data is received from HTTP request. The single section is composed of a red header and serval cells(I didn't make each cell a section because the whole list is rather complicated, there are a lot of other kind of sections).

The section controller has a "model", naming "SectionObject" for example.

@interface SectionObject : NSObject <IGListDiffable>
@property (nonatomic, copy) NSArray *datas;//(each data represent a cell, there are 4 in the pic above)
@end

If I want to expand the "cell2", I found the index of data which represent "cell2", modify that data, then call reloadInSectionController:atIndexes: in IGListBatchContext. The cell did expand with a default animation. But if I want to take advantage of the invalid layout API to make spring animations, I didn't find a good practice.

And in the example of #499 , the height of the cell is bind to a property height in section controller, the "data" is not modified. And in my example, the data for the cell is modified(add some extra info from server then update the cell).

[rnystrom]

@PhilCai1993 what determines the height of cell2? Is it the data itself? A member/property of the data?

Can you not just call invalidateLayoutForSectionController: self like in the example?

[PhilCai1993]

one property of the data

[rnystrom]

@PhilCai1993 As long as the data makes its way to the section controller, the invalidate API should work exactly the same as reloadInSectionController:. Just call invalidate after the data has changed.

[PhilCai1993]

@rnystrom I'll post some examples later at the weekend.

[jessesquires]

Going to close as resolved. 😄

[PhilCai1993]

@jessesquires 😄 OK, I did post any example because I'm busy with my work😂. Could I reopen it when examples are post?