Android Fragments Kotlin Example With Back Stack Programmatically

Hello Androiders, Welcome to the Android Fragments Kotlin Backstack example tutorial.

In Android Fragments Kotlin Backstack Example, learn how to create a basic fragment with simple a example and source code.

You will learn how to create multiple fragments in one activity.

We will cover how to maintain,handle and manage backstack of fragments.

First, check the output of Android Fragments Kotlin Backstack, then we will develop it.

Download Source Code For Android Fragments Kotlin Backstack Example

Step 1: Create a new project in Android Studio.

Make sure you are ready with new android project in android studio.

Step 2: Creating Two Fragments

Prepare two fragments and give them name as “OneFragment” and “TwoFragment.”

Add below code in OneFragment.kt

Paste following source code in fragment_one.xml

Add below code in TwoFragment.kt

Copy following in fragment_two.xml

Step 3: Making BackStack Activity

Create a new activity and give it a name “BackStackActivity.”

Copy following in activity_back_stack.xml

Add below in BackStackActivity.kt

Step 4: Description of BackStackActivity

Below function is used to create a fragment.

In the second parameter, a boolean variable “addToBackStack” is passed.

If addToBackStack is true then, the fragment will be saved in back stack. That means when a user clicks on the back button all the fragments present in backstack will be set in container_frame as per its order.

Step 5: Updating MainActivity

Add below to activity_main.xml

Add following in MainActivity.kt

Step 6: Description of MainActivity

Following function is used to open fragment.

Same as in BackStackActivity, a boolean addToBackStack  variable is passed in the second parameter.

Here it is false, so if a user clicks back button, the app will be closed because nothing was saved in the backstack.

Java Version

Java version of this tutorial is available here: Fragments Android Tutorial. 

So that is all for Fragments Android Kotlin Backstack example.

Feel free to comment your queries and reviews in the comment section. Thank you.

Hardik Parsania

I am mobile app developer. I am always passionate about solving complex and real world problems.I have developed many apps with great interest and superior logical skills.

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