android studio fragment previous fragment

onCreateView()-like setcontentView(), for providing the view.onCreate()-Initialisation or allocation of memory.onAttach()- attaches fragment to activity.Multiple fragments can be combined in a single activity.It can be added or removed at run time.It is always associated with an Activity.Import 4.app.A fragment is a chunk part of an Activity which is used for achieving Panel Based Designing, to achieve reusability of GUI as well as to show effective GUI(large screen). Implementation ':support-v4:28.0.0'ĪndroidTestImplementation ':runner:1.0.2'ĪndroidTestImplementation '.espresso:espresso-core:3.0.2' }Īpply plugin: '' android Implementation ':constraint-layout:1.1.3' Implementation fileTree (dir : 'libs', include : )

ProguardFiles getDefaultProguardFile ( 'proguard-android-optimize.txt' ), 'proguard-rules.pro' } } } TestInstrumentationRunner '.AndroidJUnitRunner' } In the adle file, we will add the dependency library of the TabLayout.

In the activity_main.xml file, we will add the TabLayout and ViewPager view components. In the below example, we are demonstrating the usage of the Android fragment.

onDetach(): This method is invoked just before to the fragment no longer being associated with its activity.

onDestroy(): This method is used to do final clean up of fragment state.

onDestroyView(): This method is used to clean up the resources used by fragment.

onStop(): This method is called at the time fragment is no longer visible.

onPause(): This method is invoked at the time fragment is no longer interactive.

onResume(): This method is used to make the fragment interactive.

onStart(): This method is used to make the fragment visible.

onViewStateRestored(Bundle): This method is used to inform the specified fragment that fragment view hierarchy saved state has been restored successfully.

onActivit圜reated(Bundle): This method is called after onCreate() method completion.

onCreateView(LayoutInflater, ViewGroup, Bundle): This method is used to create and return view hierarchy.

onCreate(Bundle): This method is used to initialize the specified fragment.

onAttach(Activity): This method is invoked only once when fragment is attached with activity.

For a fragment, there are 12 lifecycle methods in Android. Similar to the activity lifecycle, the android fragment also has a lifecycle.

Android studio fragment previous fragment