crash with move item from section1 to section2,

[CYZZ]

can you show demo with move item from setion1 to section2 ,and when didselected in section1 cell move cell to section2,or dissected section2 cell move item from section2 to section1;THX

[Zhiwei Zhao]

If you don't need to move cell between sections, you can just add
if (newIndexPath.section != previousIndexPath.section) { return; }
in - (void)invalidateLayoutIfNecessary