FragmentHostCallback

Kotlin |Java

abstract class FragmentHostCallback<E : Any!> : FragmentContainer

kotlin.Any
↳	androidx.fragment.app.FragmentContainer
	↳	androidx.fragment.app.FragmentHostCallback

Integration points with the Fragment host.

Fragments may be hosted by any object; such as an Activity. In order to host fragments, implement FragmentHostCallback, overriding the methods applicable to the host.

FragmentManager changes its behavior based on what optional interfaces your FragmentHostCallback implements. This includes the following:

• ActivityResultRegistryOwner: Removes the need to override onStartIntentSenderFromFragment or onRequestPermissionsFromFragment.
• FragmentOnAttachListener: Removes the need to manually call FragmentManager#addFragmentOnAttachListener from your host in order to receive FragmentOnAttachListener#onAttachFragment callbacks for the FragmentController#getSupportFragmentManager().
• androidx.activity.OnBackPressedDispatcherOwner: Removes the need to manually call FragmentManager#popBackStackImmediate() when handling the system back button.
• androidx.lifecycle.ViewModelStoreOwner: Removes the need for your FragmentController to call FragmentController#retainNestedNonConfig() or FragmentController#restoreAllState(Parcelable, FragmentManagerNonConfig).

Summary

Public constructors
<init>(@NonNull context: Context, @NonNull handler: Handler, windowAnimations: Int)

Public methods
open Unit	onDump(@NonNull prefix: String, @Nullable fd: FileDescriptor?, @NonNull writer: PrintWriter, @Nullable args: Array<String!>?) Print internal state into the given stream.
open View?	onFindViewById(id: Int)
abstract E?	onGetHost() Return the object that's currently hosting the fragment.
open LayoutInflater	onGetLayoutInflater() Return a LayoutInflater.
open Int	onGetWindowAnimations() Return the window animations.
open Boolean	onHasView()
open Boolean	onHasWindowAnimations() Return true if there are window animations.
open Unit	onRequestPermissionsFromFragment(@NonNull fragment: Fragment, @NonNull permissions: Array<String!>, requestCode: Int) Requests permissions from the given fragment.
open Boolean	onShouldSaveFragmentState(@NonNull fragment: Fragment) Return true if the fragment's state needs to be saved.
open Boolean	onShouldShowRequestPermissionRationale(@NonNull permission: String) Checks whether to show permission rationale UI from a fragment.
open Unit	onStartActivityFromFragment(@NonNull fragment: Fragment, intent: Intent!, requestCode: Int) Starts a new Activity from the given fragment.
open Unit	onStartActivityFromFragment(@NonNull fragment: Fragment, intent: Intent!, requestCode: Int, @Nullable options: Bundle?) Starts a new Activity from the given fragment.
open Unit	onStartIntentSenderFromFragment(@NonNull fragment: Fragment,