ios - Creating transitions on the navigation stack that show both source and destination views? -


the native push transition shows source view, , transition on destination view seamlessly.

the modal transition shows destination view overlaying source view bottom.

i'd modal transition works navigation controller.

so far have this:

cabasicanimation *anim = [cabasicanimation animationwithkeypath:@"transform.translation.y"];     anim.duration = .2;     anim.autoreverses = no;     anim.removedoncompletion = yes;      anim.fromvalue = [nsnumber numberwithint:sourceviewcontroller.view.frame.size.height];     anim.tovalue = [nsnumber numberwithint:0];      [sourceviewcontroller.navigationcontroller.view.layer addanimation:anim                                                                  forkey:kcatransition];      [sourceviewcontroller.navigationcontroller pushviewcontroller:destinationcontroller animated:no];

this in -perform method in segue subclass. problem navigation controller push done immediately, , while transition takes place, nothing of source view displayed. want if it's overlaying.

i thought might possible take screenshot using core graphics , having superview of destination view, couldn't work properly.

i tried using 1 of uiview animation methods so:

[sourceviewcontroller.view addsubview:destinationcontroller.view];     [destinationcontroller.view setframe:sourceviewcontroller.view.window.frame];     [destinationcontroller.view settransform:cgaffinetransformmaketranslation(0, sourceviewcontroller.view.frame.size.height)];     [destinationcontroller.view setalpha:1.0];      [uiview animatewithduration:1.3                           delay:0.0                         options:uiviewanimationoptiontransitionnone                      animations:^{                          [destinationcontroller.view settransform:cgaffinetransformmaketranslation(0, 0)];                          [destinationcontroller.view setalpha:1.0];                       }                      completion:^(bool finished){                          [destinationcontroller.view removefromsuperview];                          [sourceviewcontroller.navigationcontroller pushviewcontroller:destinationcontroller animated:no];                       }];

but again, there's issue this: navigation bar isn't displayed until view controller pushed onto navigation stack. there's sort of "jump" @ end of animation when navigation bar displayed.

so options this?

i resolved taking route of creating image of source view , transitioning on that.

also, should noted "flash" doesn't exist on ios 7 there isn't custom code necessary.


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