CODEWITHSUNDEEP
androidandroid-intentandroid-architecture-componentsandroid-instant-appsandroid-architecture-navigation
Joaquim Ley
Joaquim Ley

Reputation: 4127

Navigation component with instant/(dynamic-)feature modules

I'm trying to implement the new navigation component with dynamic features

So the structure looks like this:

I've been reading a lot with no success how to glue these together without depending on each other as each feature is completely isolated

e.g The app (app module) starts with the SplashActivity and checks the session state, so my question is how should I start the login_graph or home_graph and in the first case, start the home after finishing the auth flow?

The way I'm currently trying gluing'em together is using a globalNav module (android-library) I found a couple of workarounds:

Intent().setClassName(context.packageName, className).also { context.startActivity(it) }

Any suggestions would be great :)

PS: Some references that I've been viewing/reading on:

PSS: I'm actively trying to figure this out if I find a good solution I'll make sure to answer too.

EDIT

For anyone interested in this, as it isn't currently supported, you can star the issue here: https://issuetracker.google.com/issues/132170186

Upvotes: 12

Views: 2299

Answers (3)

Ben Weiss
Ben Weiss

Reputation: 17922

Navigation in on-demand feature modules is supported by using the navigation-dynamic-feature-* components. The most recent version can be found on maven.google.com.

We do have a sample available that demonstrates both XML and Kotlin DSL declaration possibilites.

The documentation is available here

For more info you can also watch the recording on this from the Android Dev Summit 2019.

Upvotes: 3

Torkel Velure
Torkel Velure

Reputation: 1326

This is now supported in androidx.navigation:navigation-dynamic-features-fragment:2.3.0.

Just include app:moduleName in navigation.

Example:

<navigation xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/menu_nav_graph"
    app:startDestination="@id/main_fragment">

<!-- this fragment is in base module -->
<fragment
        android:id="@+id/main_fragment"
        android:name="com.example.app.MainFragment"
        tools:layout="@layout/fragment_main" />

<!-- activity and fragment in a different module -->
<activity
        android:id="@+id/splash_activity"
        android:name="com.example.examplemodule.splash.SplashActivity"
        app:moduleName="examplemodule" />

<fragment
        android:id="@+id/user_profile"
        android:name="com.example.examplemodule.user.UserProfileFragment"
        android:label="UserProfileFragment"
        app:moduleName="examplemodule" />

</navigation>

You can call findNavController().navigate(R.id.splash_activity) from anywhere, and it will install examplemodule for you if necessary.

Upvotes: 1

Namiq Tehmezli
Namiq Tehmezli

Reputation: 93

I was also facing with same problem couple minutes ago and I saw your question while trying to find an answer.

In my case I am having 2 modules app and login. The module login is dynamic-feature module which depends on module app. The module login contains all the logic and navigation for logging purpose (it contains login, register and so on). I wanted to include this LoginActivity (which is an activity in login module which has all navigation in it) in the main navigation graph in app module. We can not call LoginActivity from app layer which it does not know about it. But 

<activity android:id="@+id/loginActivity"
    android:name="login.LoginActivity"
    android:label="LoginActivity"/>

adding it manually in main nav graph worked for me.

Upvotes: 0

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