IssueTracker

The new navigation component is really good to manage simple navigation, but often navigation need to obtain results.

The documentation speak about conditional navigation here: https://developer.android.com/topic/libraries/architecture/navigation/navigation-conditional
for cases where you need to be logged in on a screen.

I think cases like that would benefit a lot if they could handle a result callback.

Something similar to what we already have with the Activities:

startActivityForResult(intent, REQUEST_ID)
...
onActivityResult(...)


instead would be something like:

navController.navigateForResult(direction)
navController.setResultHandler{ result ->
}

and being able to define result in the navigation xml


    <fragment
        android:id="@+id/some_destination"
        android:name="com.example.SomeResultFragment"
        android:label="Fragment Providing a result">
        <result app:code="@+id/success">
            <argument
                android:name="someValue"
                app:argType="string"/>
        </result>
    </fragment>


each result could have a code and a list of argument similar to the arguments to launch and code could be generated accordingly by safeargs plugin.