A->B->C (modal mode on)
When used in c
[self dismissViewControllerAnimated:YES completion:nil];
When you close the C window, you return directly to A.
I originally wanted to stay in b.
How should I operate?
In addition, I repeatedly verified it
A1 (normal view) click the button ->B->C (modal view)
A2(CollectionView) in didselectitematindexposition-> b-> c (modal view)
Note that B and C in the above two operation flows are the same
The second operation will jump directly back to A2