Make the Activity to implement this interface, Fragment 1 will call the interface method that will be implemented by the Activity class, this method in the Activity class will route the data from Fragment 1 to Fragment 2. When a button in Fragment 1 is clicked, the TextView in Fragment 2 has to increase by one or decrease by 1.Ī solution to this is to use an Interface class. In this example, Fragment 1 has two Buttons, Fragment 2 has a TextView to display a counter. step 1) first create a new project for this fragment example name project as fragment.then choose the default, minimum stk and, note that we can use fragment above api 11 so it’s better to use api 11 or above to use fragment in a better way so we will use api 11 or android 3. Ensure that you select Kotlin as your preferred programming language. Creating the project Create a new empty activity project in Android studio and name it as NavExample. You have two Fragments in an Activity, and Fragment 1 wants to talk to Fragment 2. To create a simple mobile app that demonstrates how fragments are used in Android. The Activity acts like a tunnel which connects the fragments.

This is a demonstration of communications between fragments through an Activity.

Android studio fragment layout name