How to pass data between Android Component Navigation destinations with Safe Args in Kotlin

In this android kotlin source code example, we are going to pass data between Android Component Navigation destinations with Safe Args in Kotlin.

You can copy and adopt this source code example to your Kotlin android project without reinventing the wheel.

Below is a step by step source code to pass data between Android Component Navigation destinations with Safe Args in Kotlin.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Navigation.NavigationActivity13">

    <fragment
        android:id="@+id/nav_host_fragment"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:defaultNavHost="true"
        app:navGraph="@navigation/nav_graph13"/>

</androidx.constraintlayout.widget.ConstraintLayout>

navigation/nav_graph13.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/nav_graph13"
    app:startDestination="@id/navFragment13">

    <fragment
        android:id="@+id/navFragment13"
        android:name="com.bluapp.kotlinview.Navigation.NavFragment13"
        android:label="@string/app_name"
        tools:layout="@layout/fragment_nav_fragment13">
        <action
            android:id="@+id/maintoFragment131"
            app:destination="@id/navFragment131" />

    </fragment>

    <fragment
        android:id="@+id/navFragment131"
        android:name="com.bluapp.kotlinview.Navigation.NavFragment131"
        android:label="@string/app_name"
        tools:layout="@layout/fragment_nav_fragment131">
        <argument
            android:name="message"
            android:defaultValue="Empty"
            app:argType="string" />
    </fragment>

</navigation>

MainActivity.kt

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import com.bluapp.kotlinview.R

class NavigationActivity13 : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_navigation13)
    }
}

fragment_nav_fragment13.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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/constraintlayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Navigation.NavFragment13">

    <androidx.appcompat.widget.AppCompatButton
        android:id="@+id/senddataBtn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Send Data"
        android:background="@color/colorAccent"
        android:textColor="#ffffff"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

NavFragment13.kt

import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.appcompat.widget.AppCompatButton
import androidx.navigation.Navigation
import com.bluapp.kotlinview.R


class NavFragment13 : Fragment() {
    private var senddataBtn: AppCompatButton? = null
    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        val view =  inflater.inflate(R.layout.fragment_nav_fragment13, container, false)
        senddataBtn = view.findViewById(R.id.senddataBtn) as AppCompatButton
        senddataBtn!!.setOnClickListener {
           val action = NavFragment13Directions.maintoFragment131("Hello World")
            Navigation.findNavController(view).navigate(action);
        }
        return view
    }


}

fragment_nav_fragment131.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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/constraintlayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Navigation.NavFragment131">

    <androidx.appcompat.widget.AppCompatTextView
        android:id="@+id/receiveData"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Empty"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

NavFragment131.kt

import android.os.Bundle
import androidx.fragment.app.Fragment
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.appcompat.widget.AppCompatTextView

import com.bluapp.kotlinview.R

class NavFragment131 : Fragment() {
    private var receiveData: AppCompatTextView? = null
    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        val view =  inflater.inflate(R.layout.fragment_nav_fragment131, container, false)

        return inflater.inflate(R.layout.fragment_nav_fragment131, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        val arg = NavFragment131Args.fromBundle(arguments!!)
        receiveData = view.findViewById(R.id.receiveData) as AppCompatTextView
        receiveData!!.text = arg.message
    }


}

app/build.gradle

   dependencies { 
implementation 'androidx.navigation:navigation-fragment:2.1.0'
    implementation 'androidx.navigation:navigation-ui:2.1.0'
    implementation 'androidx.navigation:navigation-fragment-ktx:2.1.0'
    implementation 'androidx.navigation:navigation-ui-ktx:2.1.0'
}
apply plugin: 'androidx.navigation.safeargs.kotlin'

If you have any question or suggestions kindly use the comment box or you can contact us directly through our contact page below.

Add a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.