ios - How to unwind segue several steps back? -

ios - How to unwind segue several steps back? -

there lot of stuff on net according topic don't it. have app custom segue implementation , without navigation controller. there cases in need unwind several steps.

for implementation utilize simple calls:

code custom segue

for wind:

[[self sourceviewcontroller] presentmodalviewcontroller:[self destinationviewcontroller] animated:yes];

for unwind:

[[self destinationviewcontroller] dismissviewcontrolleranimated: yes completion: nil];

as understand when wind segue somewhere in memory there info used during unwind. reason in custom unwind utilize read property destinationviewcontroller.

so how can unwind several steps in 1 action? or have create several unwinds in different view controllers?

i read next question, don't understand implementation.

bellow set illustration of apps logic:

example

i have 4 vc in chain: vc a -> vc b -> vc c -> vc d

i wind , unwind , forth. logic ok. there situation in need unwind vc d vc b. how that? can unwind straight vc b or have unwind vc c , in unwind handler unwind vc b?

i thought of additional segue vc d vc b, there remarks on net not right way, because segue chain messy.

the reply what unwind segues , how utilize them? has need know unwindsegues (i suggest re-read it).

but more direct answer, yes can unwind vc d vc b. have first implement method in vc b:

- (ibaction)unwindtovcb:(uistoryboardsegue *)unwindsegue { }

after doing so, go ib, , control-drag button's action exit icon, should pick method created above selector. (this taken straight question/answer stated above).

again, clearer version of said, read reply of linked question mentioned above.

ios objective-c