What is the difference between activity and fragmentactivity

As for functionality, Fragments , because they are reusable, allow more complex interfaces than Activities with simpler code. This answer in SOen illustrates the differences between them. Toggle navigation.

What is the difference between Activity, FragmentActivity and Fragment? I was working on fragments and came across two things Activity and FragmentActivity which are used several times. I want to know that is there any difference between these two, because when I changed Activity with FragmentActivity , it had no effect on the app. The FragmentActivity class adds a couple new methods to ensure compatibility with older versions of Android, but other than that, there really isn't much of a difference between the two.

FragmentActivity is part of the support library , while Activity is the framework's default class. They are functionally equivalent. You should always use FragmentActivity and android. Fragment instead of the platform default Activity and android. Fragment classes. Using the platform defaults mean that you are relying on whatever implementation of fragments is used in the device you are running on.

These are often multiple years old, and contain bugs that have since been fixed in the support library. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Press ESC to cancel. Skip to content Home Resume What is the difference between an activity and a fragment? Ben Davis June 1, What is the difference between an activity and a fragment? How can I see fragment activity? What is the relationship between activity and fragment? When should you use a fragment rather than an activity? How do you know if a fragment is visible?

What is the purpose of the fragments? How do I start an activity fragment? What are some fragment words? What is fragment mean? What is a one word fragment?

What is a fragment in grammar? How do you fix a fragment? A Fragment typically defines a part of a user interface. Fragments must be embedded in activities; they cannot run independently of activities. Historically each screen in an Android app was implemented as a separate Activity.

Now by using the Fragment Object which you added in activity you can access TextView. You need to call method findViewById from your fragment view. You can return null if the fragment does not provide a UI. Android Bundle is used to pass data between activities. The values that are to be passed are mapped to String keys which are later used in the next activity to retrieve the values.

An activity is the single screen in android. By the help of activity, you can place all your UI components or widgets in a single screen. The 7 lifecycle method of Activity describes how activity will behave at different states.