ComponentActivity

Kotlin |Java

open class ComponentActivity : ComponentActivity, ContextAware, LifecycleOwner, ViewModelStoreOwner, HasDefaultViewModelProviderFactory, SavedStateRegistryOwner, OnBackPressedDispatcherOwner, ActivityResultRegistryOwner, ActivityResultCaller

androidx.activity.ComponentActivity

Known Direct Subclasses FragmentActivity FragmentActivity Base class for activities that want to use the support-based Fragments.

Known Indirect Subclasses AppCompatActivity AppCompatActivity Base class for activities that wish to use some of the newer platform features on older Android devices.

Base class for activities that enables composition of higher level components.

Rather than all functionality being built directly into this class, only the minimal set of lower level building blocks are included. Higher level components can then be used as needed without enforcing a deep Activity class hierarchy or strong coupling between components.

Summary

Public constructors
<init>() Default constructor for ComponentActivity.
<init>(@LayoutRes contentLayoutId: Int) Alternate constructor that can be used to provide a default layout that will be inflated as part of super.onCreate(savedInstanceState).

Public methods
open Unit	addContentView(view: View!, params: LayoutParams!)
Unit	addOnContextAvailableListener(@NonNull listener: OnContextAvailableListener) Add a new OnContextAvailableListener for receiving a callback for when this class is associated with a android.content.Context.
ActivityResultRegistry	getActivityResultRegistry() Get the ActivityResultRegistry associated with this activity.
open ViewModelProvider.Factory	getDefaultViewModelProviderFactory() Returns the default ViewModelProvider.Factory that should be used when no custom Factory is provided to the ViewModelProvider constructors.
open Any?	getLastCustomNonConfigurationInstance() Return the value previously returned from onRetainCustomNonConfigurationInstance().
open Lifecycle	getLifecycle() Returns the Lifecycle of the provider.
OnBackPressedDispatcher	getOnBackPressedDispatcher() Retrieve the OnBackPressedDispatcher that will be triggered when onBackPressed() is called.
SavedStateRegistry	getSavedStateRegistry()
open ViewModelStore	getViewModelStore() Returns the ViewModelStore associated with this activity
open Unit	onBackPressed() Called when the activity has detected the user's press of the back key.
open Unit	onRequestPermissionsResult(requestCode: Int, @NonNull permissions: Array<String!>, @NonNull grantResults: IntArray)
open Any?	onRetainCustomNonConfigurationInstance() Use this instead of onRetainNonConfigurationInstance().
Any?	onRetainNonConfigurationInstance() Retain all appropriate non-config state.
open Context?	peekAvailableContext()
ActivityResultLauncher<I>	registerForActivityResult(@NonNull contract: ActivityResultContract<I, O>, @NonNull registry: ActivityResultRegistry, @NonNull callback: ActivityResultCallback<O>)
ActivityResultLauncher<I>	registerForActivityResult(@NonNull contract: ActivityResultContract<I, O>, @NonNull callback: ActivityResultCallback<O>)
Unit	removeOnContextAvailableListener(@NonNull listener: OnContextAvailableListener)
open Unit	reportFullyDrawn()
open Unit	setContentView(@LayoutRes layoutResID: Int)