Nativescript behavior of the '< Go Back' button

Question

I\'ve got the following ActionBar definition

Answer 1

UPDATE: Indeed, it appears that the NavigationButton in iOS can only be used to navigate back and can not be overridden with tap action. Reference from the NativeScript documentation

In iOS, the back button is used explicitly for navigation. It navigates to the previous page and you cannot handle the tap event to override this behaviour.

As for the appearing NavigationButton for iOS - it is by design just as in native iOS app. If you do not want to have back navigation you can force it with

clearHistory: true

Uncomment this line in the test application and delete the navigationButton from the sub-page and when navigation from main-page to sub-page the NavButton won't appear.