Android Navigation Component : Pass value (arguments) in fragments

Question

What I have done:

I have created Navigation Drawer Activity, As updated new format of Navigation Drawer Activity, As per new Android architecture, I got it with Navigation Component structure.

The NavigationView code with NavController and NavigationUI is below which is opening fragment when I click on any navigation item.

    DrawerLayout drawer = findViewById(R.id.drawer_layout);     NavigationView navigationView = findViewById(R.id.nav_view);     // Passing each menu ID as a set of Ids because each     // menu should be considered as top level destinations.     mAppBarConfiguration = new AppBarConfiguration.Builder(             R.id.nav_home, R.id.nav_profile, R.id.nav_privacy_policy,             R.id.nav_terms, R.id.nav_contact_us, R.id.nav_share, R.id.nav_send)             .setDrawerLayout(drawer)             .build();     NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);     NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);     NavigationUI.setupWithNavController(navigationView, navController); 

This is for nav_host_fragment:

<fragment         android:id="@+id/nav_host_fragment"         android:name="androidx.navigation.fragment.NavHostFragment"         android:layout_width="match_parent"         android:layout_height="match_parent"         app:defaultNavHost="true"         app:layout_constraintLeft_toLeftOf="parent"         app:layout_constraintRight_toRightOf="parent"         app:layout_constraintTop_toTopOf="parent"         app:navGraph="@navigation/mobile_navigation" /> 

The navigation is happening using this navigation/mobile_navigation.xml

<?xml version="1.0" encoding="utf-8"?> <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/mobile_navigation"     app:startDestination="@+id/nav_home">      <fragment         android:id="@+id/nav_home"         android:name="com.sohamerp.marsremedies.fragment.HomeFragment"         android:label="@string/menu_home"         tools:layout="@layout/fragment_home" />      <fragment         android:id="@+id/nav_profile"         android:name="com.sohamerp.marsremedies.fragment.ProfileFragment"         android:label="@string/menu_my_profile"         tools:layout="@layout/fragment_profile" />      <fragment         android:id="@+id/nav_privacy_policy"         android:name="com.sohamerp.marsremedies.fragment.PrivacyPolicyFragment"         android:label="@string/menu_privacy_policy"         tools:layout="@layout/fragment_privacy_policy" />      <fragment         android:id="@+id/nav_terms"         android:name="com.sohamerp.marsremedies.fragment.TermsConditionFragment"         android:label="@string/menu_terms"         tools:layout="@layout/fragment_terms_condition" />      <fragment         android:id="@+id/nav_contact_us"         android:name="com.sohamerp.marsremedies.fragment.ContactUsFragment"         android:label="@string/menu_contact_us"         tools:layout="@layout/fragment_terms_condition" />  </navigation> 

What I want to do:

Now I want to pass some values as a bundle (arguments) in Fragment when it's called.

Scenario: I have two fragments PrivacyPolicyFragment and TermsConditionsFragment, In both fragments, I am just opening links inside WebView accordingly. So When I click on the menu item of Privacy Policy, I will pass a link related to the same.

In this new structure navigation/mobile_navigation.xml opening fragments, How can I pass arguments?

Any help?

Answer 1

So I forgot to go through this link : Define Destination Arguments

But this answer helpful to all lazy peoples like me:

Add dependency in project level build.gradle:

classpath "androidx.navigation:navigation-safe-args-gradle-plugin:2.1.0" 

Apply plugin in app level build.gradle:

apply plugin: "androidx.navigation.safeargs" 

Using XML: predefined (static) value:

In xml file of navigation /navigation/mobile_navigation.xml declare argument tag as below or you can design through this link:

<fragment     android:id="@+id/nav_privacy_policy"     android:name="com.sohamerp.marsremedies.fragment.PrivacyPolicyFragment"     android:label="@string/menu_privacy_policy"     tools:layout="@layout/fragment_privacy_policy" >     <argument         android:name="privacyPolicyLink"         app:argType="string"         android:defaultValue="http://sohamerp.com/avo/avo_privacy_policy.html"/> </fragment>  <fragment     android:id="@+id/nav_terms"     android:name="com.sohamerp.marsremedies.fragment.PrivacyPolicyFragment"     android:label="@string/menu_terms"     tools:layout="@layout/fragment_terms_condition" >     <argument         android:name="privacyPolicyLink"         app:argType="string"         android:defaultValue="http://sohamerp.com/avo/avo_privacy_policy.html"/> </fragment> 

Now you have to write code in your Fragment like:

if(getArguments() != null) {     // The getPrivacyPolicyLink() method will be created automatically.     String url = PrivacyPolicyFragmentArgs.fromBundle(getArguments()).getPrivacyPolicyLink(); } 

Hope it will helps you others.