Let's have a look at the simple example of android fragment. It is called immediately prior to the fragment no longer being associated with its activity. Is called when fragment is no longer visible.Īllows the fragment to clean up resources.Īllows the fragment to do final clean up of fragment state. Is called when fragment is no longer interactive. getFragmentManager() FragmentTransaction fragmentTransaction fragmentManager. It provides information to the fragment that all the saved state of fragment view hierarchy has been restored. It is invoked after the completion of onCreate() method. OnCreateView(LayoutInflater, ViewGroup, Bundle) In the Welcome to Android Studio dialog, select Import project (Eclipse ADT, Gradle, etc.). If you add a fragment transaction to the back stack then the transaction can be backtracked (reversed) with a click on the back button on the device.

The back stack keeps track of actions in your app which can be backtracked when the user clicks Android's standard 'back' button on the device. It is called only once when it is attached with activity. Use the Download Materials button at the top or bottom of this tutorial to download and extract the Starter Project. You can add a fragment transaction to the back stack. There are 12 lifecycle methods for fragment. The lifecycle of android fragment is like the activity lifecycle.

The FragmentManager class is responsible to make interaction between fragment objects. Fragments represent multiple screen inside one activity.Īndroid fragment lifecycle is affected by activity lifecycle because fragments are included in activity.Įach fragment has its own life cycle methods that is affected by activity life cycle because fragments are embedded in activity.

There can be more than one fragment in an activity. Android Fragment is the part of activity, it is also known as sub-activity.

Android studio fragment transaction