First fragment send messages -> Second fragment receive messages.

Author: remixgrjp

app/src/main/java/asia/remix/myfragment/FirstFragment.java

@@ -34,7 +34,9 @@ public void onViewCreated( @NonNull View view, Bundle savedInstanceState ){
 		button.setOnClickListener( new View.OnClickListener(){
 			@Override
 			public void onClick( View view ){
-				NavHostFragment.findNavController( FirstFragment.this ).navigate( R.id.action_FirstFragment_to_SecondFragment );
+				Bundle bundle= new Bundle();
+				bundle.putString( SecondFragment.KEY, "from 1" );
+				NavHostFragment.findNavController( FirstFragment.this ).navigate( R.id.action_FirstFragment_to_SecondFragment, bundle );
 			}
 		} );
 	}

app/src/main/java/asia/remix/myfragment/SecondFragment.java

@@ -6,13 +6,16 @@
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
+import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentResultListener;
 import androidx.navigation.fragment.NavHostFragment;
 
 public class SecondFragment extends Fragment{
 	static final String TAG= "SecondFragment";
+	static final String KEY= "SecondFragment";//for recevie key
 
 	@Override
 	public void onCreate( Bundle savedInstanceState ){
@@ -37,6 +40,11 @@ public void onClick( View view ){
 				NavHostFragment.findNavController( SecondFragment.this ).navigate( R.id.action_SecondFragment_to_FirstFragment );
 			}
 		} );
+
+		TextView textView = view.findViewById( R.id.textview_second );
+		Bundle b= ( null == getArguments() ? new Bundle() : getArguments() );
+		String s= requireActivity().getString( R.string.hello_second_fragment );
+		textView.setText( String.format( s, b.getString( KEY, "-" ) ) );
 	}
 
 	@Override