FragmentTransaction‘s remove(), replace() method can also make a fragment runs into the stop state.

Stop State: When an activity is stopped, its related fragments are stopped also.

This activity-related fragment is paused also.

Pause State: If an activity is paused because another not-full-screen activity is displayed at the top of the back stack.

Running State: Fragment is visible, its belonged activity is running.

Public class MainActivity extends AppCompatActivity implements first. XML File( res/layout/second_fragment.xml): XML File( res/layout/first_fragment.xml): XML File( res/layout/activity_main.xml): Run the application to launch Android emulator or you can run it on your mobile also(which is way faster).Copy the contents of res/layout/activity_main.xml , res/layout/first_fragment.xml and res/layout/second_fragment.xml file.Create two more Activites and name it as first and second respectively and also create their respective xml files.Open an Empty Activity and name it as MainActivity.Open Android Studio and create a new Android application and name it as “Fragment” and company domain as codedost so your package will be automatically set.We will be adding one fragment statically that is adding in xml file and another fragment dynamically that is adding programmatically in the java file and we will pass data between these two fragments so that you are familiar to both ways of using fragments

In this program, we will see how to pass data or communicate between fragments.

There are a lot more reasons, but this one should be suitable for now.įragment lifecycle is similar to that of the Activity lifecycle. The reason we use fragments in android is that, as the mobile market is evolving, there are so many devices with different screen sizes(tablets, mobile, phone + tablets), so in order to provide the best user interface possible, fragments are used. Fragments are designed to be reusable UI layouts with logic inside it. Fragment is a GUI component which is inside an activity. In Android, fragment is a part of an activity.

Android studio fragment activity cycle