Jetpack navigation in android

Navigate fragment to fragment


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/navigation_graph"

    app:startDestination="@id/firstFragment">

    <fragment

        android:id="@+id/firstFragment"

        android:name="com.journaldev.androidjetpacknavigation.FirstFragment"

        android:label="navigation_first_fragment"

        tools:layout="@layout/navigation_first_fragment" >

        <action

            android:id="@+id/action_firstFragment_to_secondFragment"

            app:destination="@id/secondFragment"

            app:enterAnim="@anim/nav_default_enter_anim"  />

    </fragment>

    <fragment

        android:id="@+id/secondFragment"

        android:name="com.journaldev.androidjetpacknavigation.SecondFragment"

        android:label="navigation_second_fragment"

        tools:layout="@layout/navigation_second_fragment" />

</navigation>

Alternate: 1

        View.OnClickListener s = Navigation.createNavigateOnClickListener(R.id.action_firstFragment_to_secondFragment);

        Button button = view.findViewById(R.id.button_frag1);

        button.setOnClickListener(s);

Alternate: 2

final NavController navController = Navigation.findNavController(getActivity(), R.id.my_nav_host_fragment);

button.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                navController.navigate(R.id.action_firstFragment_to_secondFragment);

            }

        });

Alternate: 3

final NavDirections navDirections = FirstFragmentDirections.actionFirstFragmentToSecondFragment();

final NavController navController = Navigation.findNavController(getActivity(), R.id.my_nav_host_fragment);

button.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                navController.navigate(navDirections);

            }

        });

***  Now see how to pass the argument from FirstFragment to SecondFragment


Navigation.xml

<fragment

        android:id="@+id/firstFragment"

        android:name="com.journaldev.androidjetpacknavigation.FirstFragment"

        android:label="navigation_first_fragment"

        tools:layout="@layout/navigation_first_fragment" >

        <argument

            android:name="test_string"

            android:defaultValue="hello world"

            app:argType="string" />

    </fragment>

MainActivity.java

       final Bundle bundle = new Bundle();

        bundle.putBoolean("test_boolean", true);

        final NavController navController = Navigation.findNavController(getActivity(), R.id.my_nav_host_fragment);

        

        Button button = view.findViewById(R.id.button_frag1);

        button.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                navController.navigate(R.id.action_firstFragment_to_secondFragment, bundle);

            }

        });