What is setTargetFragment?

What is setTargetFragment?

Where startActivityForResult() establishes a relationship between 2 activities, setTargetFragment() defines the caller/called relationship between 2 fragments. setTargetFragment(target) lets the “called” fragment know where to send the result. onActivityResult() is called manually in this case.

What is an Android fragment?

A Fragment represents a reusable portion of your app’s UI. A fragment defines and manages its own layout, has its own lifecycle, and can handle its own input events. Fragments cannot live on their own–they must be hosted by an activity or another fragment.

Is onActivityCreated deprecated?

Google deprecate fragment’s onActivityCreated() on Android and recommend to use LifeCycleObserver: To get a callback specifically when a Fragment activity’s * {@link Activity#onCreate(Bundle)} is called, register a * {@link androidx. lifecycle.

What is FragmentManager?

FragmentManager is the class responsible for performing actions on your app’s fragments, such as adding, removing, or replacing them, and adding them to the back stack.

What is retained fragment in Android?

Specifically, “retained” means that the fragment will not be destroyed on configuration changes. That is, the Fragment will be retained even if the configuration change causes the underlying Activity to be destroyed.

What is onActivityCreated?

onActivityCreated(Bundle) tells the fragment that its activity has completed its own Activity. onCreate() . onViewStateRestored(Bundle) tells the fragment that all of the saved state of its view hierarchy has been restored.

When should I use FragmentContainerView?

FragmentContainerView is now the recommended View to use in order to host Fragments instead of the previously common way of using FrameLayouts. In addition to correctly handling Fragment transactions under the hood, it has some additional features that coordinate with Fragment behavior.

What is defaultNavHost?

The app:defaultNavHost=”true” attribute ensures that your NavHostFragment intercepts the system Back button. Note that only one NavHost can be the default. If you have multiple hosts in the same layout (two-pane layouts, for example), be sure to specify only one default NavHost .

What is the replacement for the settargetfragment function?

I believe the FragmentManager is the correct replacement for it. I am using the deprecated setTargetFragment function in my settings Preferences to create multiple preference screens.

What is getfragment in fragmentcontainerview?

FragmentContainerView now provides a getFragment () method which returns the fragment that was most recently added to the container. This uses the same logic as findFragmentById () with the ID of the FragmentContainerView, but allows chaining the call. ( Ife17a, b/162527857)

How do I pass data from one fragment to another?

Passing data between Fragment s can be achieved in various ways, including using the target Fragment APIs ( Fragment.setTargetFragment () and Fragment.getTargetFragment () ), ViewModel or the Fragment s’ parent Activity.

How to get callbacks when a fragment is attached to another fragment?

You can add a listener to getChildFragmentManager () the child FragmentManager} by calling FragmentManager.addFragmentOnAttachListener (FragmentOnAttachListener) in onAttach (Context) to get callbacks when a child fragment is attached. This hook is called whenever an item in a context menu is selected.