Is it better to use fragments or activities?

Your life will be a lot easier if you use Fragments when you try to create applications for both phones and tablets. Since the fragments are so tied in with the Honeycomb+ APIs, you will want to use them on phones as well to reuse code. That’s where the compatibility library comes in handy.

Should I use fragments or activities Android?

We can’t create multi-screen UI without using fragment in an activity, After using multiple fragments in a single activity, we can create a multi-screen UI. Fragment cannot be used without an Activity. While Using fragments in the project, the project structure will be good and we can handle it easily.

Why do we need fragments in Android?

According to the Android documentation, a fragment is a part of applications user interface that is bound to an activity. Fragments have their lifecycle and layouts or UI components. Fragments help enrich your UI design, pass data between different screens, and adapt to different device configurations.

What are the advantages of using fragment over activity in Android?

Fragments allow such designs without the need for you to manage complex changes to the view hierarchy. By dividing the layout of an activity into fragments, you become able to modify the activity’s appearance at runtime and preserve those changes in a back stack that’s managed by the activity.

Can we have fragments without activity?

Fragment can’t be initiated without Activity or FragmentActivity. As soon as you create an instance of the Fragment class, it exists, but in order for it to appear on the UI, you must attach that fragment to an activity because a fragment’s lifecycle runs parallel to an activity’s lifecycle.

Are fragments still used in Android?

Fragments have existed for years (back in the days the support library backported them to Android 1.6) and Google continues to improve them. And actually there has been a lot of new stuff added recently, including ViewModels and LiveData which play very well with Fragments.

Can a fragment exist without UI?

The Android Developer guide has a decent section on the use of Fragments. One way to use Fragments is without a UI.

How does fragment work in Android?

Overview

1. A Fragment is a combination of an XML layout file and a java class much like an Activity .
2. Using the support library, fragments are supported back to all relevant Android versions.
3. Fragments encapsulate views and logic so that it is easier to reuse within activities.

What are the major advantages of using fragments for UI implementation?

The main reason is that fragments are more reusable than custom views. Sometimes you can’t create a fully encapsulated UI component relying on views alone.

Can fragments be added without using a user interface?

We use a fragment without a UI to act as a ‘controller’ picking up messages (broadcasts) from other fragments and modifying child controls. It provides a nice level of separation without polluting the parent activity code ensuring portability and modularisation… one of the big wins when using Fragment s.

Can you use a fragment without UI?

However, a fragment is not required to be a part of the activity layout; you may also use a fragment without its own UI as an invisible worker for the activity.

What is FragmentContainerView?

FragmentContainerView is a customized Layout designed specifically for Fragments. It extends FrameLayout , so it can reliably handle Fragment Transactions, and it also has additional features to coordinate with fragment behavior.

What are fragments in Android UI?

If you grasp those concepts, you’re ready to learn to use fragments! Fragments are a powerful feature of good Android UI that allow you to approach app design in a modular manner. These are distinct views that can contain entire layouts and that come with their own accompanying Java code.

Can an Android fragment live on its own?

Fragments cannot live on their own–they must be hosted by an activity or another fragment. The fragment’s view hierarchy becomes part of, or attaches to , the host’s view hierarchy. Note: Some Android Jetpack libraries, such as Navigation , BottomNavigationView, and ViewPager2, are designed to work with fragments.

What is the use of fragmentpager in Android?

It means back to the previous fragment state. You can use the cool ViewPagerwith a FragmentPagerAdapterto create swipe interfaces. The FragmentPagerAdaptercode is much cleaner than a regular adapter, and it controls instantiations of the individual fragments.

What are fragfragments in Android?

Fragments are Android’s solution to creating reusable user interfaces. You can achieve some of the same things using activities and layouts (for example by using includes). However; fragments are wired in to the Android API, from HoneyComb, and up. Let me elaborate; The ActionBar.