iphone - UINavigationBar change Tint color with animation -


is possible change tint animation smoother effect?

this doesn't work me:

[uiview beginanimations:nil context:nil]; [self.navigationcontroller.navigationbar settintcolor:[uicolor greencolor]]; [uiview commitanimations];

i not sure if possible using native apple components guess using cg generate gradient ... want find out before i'll start building own solution ...

cheers guys :)

you wouldn't believe length went through make possible; annoyed me no end isn't stock ios feature , transition of tintcolor ugly while animation push/pop viewcontroller smooth.

there'a lot of code checks when fade, , i've written class called pspdfnavigationappearancesnapshot preserve navigation state when being popped. (i got idea awesome nimbuskit)

the actual animation pretty easy:

[self.navigationcontroller.navigationbar.layer addanimation:pspdffadetransition() forkey:nil];  catransition *pspdffadetransition(void) {     return pspdffadetransitionwithduration(0.25f); }  catransition *pspdffadetransitionwithduration(cgfloat duration) {     catransition *transition = [catransition animation];     transition.timingfunction = [camediatimingfunction functionwithname:kcamediatimingfunctioneaseineaseout];     transition.type = kcatransitionfade;     transition.duration = duration;     return transition; }

you can compact code more; it's snipped ios pdf library pspdfkit , use fade in various places, helper functions.


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