Nativescript behavior of the '< Go Back' button

Question

I\'ve got the following ActionBar definition

Answer 1

So as @nick verified, on iOS version of {N} one cannot get the tap event of the Navigation button. I understand why {N} has to add the BACK button automatically if the navigation button is not there (because iPhones don't have a physical BACK button), but not calling an existing tap event is, IMHO, adding unnecessary differences in the framework. Here's the proposed logic for iOS.

if NavigationButton present then if tap event handler set by user then use it else auto-gen a tap event handler else auto-gen a back-button and a tap event handler

Anyway here's how I'm getting around this issue for my app.

This gets the behavior I expect and is cross-platform compatible with the Android version.