#ANDROID STUDIO FRAGMENT TRANSACTION.ADD ANDROID#

Android fragment lifecycle is affected by activity lifecycle because fragments are included in activity. Fragments represent multiple screen inside one activity. There can be more than one fragment in an activity. Let us the name of the fragment black fragment is DemoFragment.java and fragment_demo.xml Android Fragment is the part of activity, it is also known as sub-activity. Then it gives a black fragment and a layout Right Click on your project + select New,.

#ANDROID STUDIO FRAGMENT TRANSACTION.ADD HOW TO#

In this tut, we have made a simple fragment and how to attach that fragment to an activity.įirst of all, if you are using android studio for development, then create a blank fragment by following steps:. onDetach() called immediately prior to the fragment no longer being associated with its activity.onDestroy() called to do the final cleanup of the fragment’s state.onDestroyView() allows the fragment to clean up resources associated with its View.onStop() the fragment is no longer visible to the user either because its activity is being stopped or a fragment operation is modifying it in the activity.

onPause() the fragment is no longer interacting with the user either because its activity is being paused or a fragment operation is modifying it in the activity.

onResume() makes the fragment begin interacting with the user (based on its containing activity being resumed).Īs a fragment is no longer being used, it goes through a reverse series of callbacks:.

onStart() makes the fragment visible to the user (based on its containing activity being started).

onViewStateRestored(Bundle) tells the fragment that all of the saved states of its view hierarchy has been restored.

onActivit圜reated(Bundle) tells the fragment that its activity has completed its own.

onCreateView(LayoutInflater, ViewGroup, Bundle) creates and returns the view hierarchy associated with the fragment.

onCreate(Bundle) called to do the initial creation of the fragment.

onAttach(Activity) called once the fragment is associated with its activity.

The core series of lifecycle methods that are called to bring a fragment up to resumed state (interacting with the user) are: Interaction with fragments is done through FragmentManager, which can be obtained via We can also see activities being used as a way to add logical flow to an application.Ī Fragment is a piece of an application’s user interface or behavior that can be placed in an Activity. But if you have a lot of content in your app to show means 20 to 25 layouts or more than this, than from my opinion you can use Fragments. If in your app there is hardly two to three layouts contents than you can easily use activities.

In this blog, We have shown the how to use fragments rather than using a lot of activities. “Fragments are two or more activities on the screen at the same time”.

Android studio fragment transaction.add