DialogFragment
public
class
DialogFragment
extends Fragment
implements
DialogInterface.OnCancelListener,
DialogInterface.OnDismissListener
| java.lang.Object | ||
| ↳ | android.app.Fragment | |
| ↳ | android.app.DialogFragment | |
This class was deprecated
in API level 28.
Use the Support Library
DialogFragment for consistent behavior across all devices
and access to Lifecycle.
A fragment that displays a dialog window, floating on top of its activity's window. This fragment contains a Dialog object, which it displays as appropriate based on the fragment's state. Control of the dialog (deciding when to show, hide, dismiss it) should be done through the API here, not with direct calls on the dialog.
Implementations should override this class and implement
onCreateView(LayoutInflater,ViewGroup,Bundle) to supply the
content of the dialog. Alternatively, they can override
onCreateDialog(Bundle) to create an entirely custom dialog, such
as an AlertDialog, with its own content.
Topics covered here:
Lifecycle
DialogFragment does various things to keep the fragment's lifecycle driving it, instead of the Dialog. Note that dialogs are generally autonomous entities -- they are their own window, receiving their own input events, and often deciding on their own when to disappear (by receiving a back key event or the user clicking on a button).
DialogFragment needs to ensure that what is happening with the Fragment
and Dialog states remains consistent. To do this, it watches for dismiss
events from the dialog and takes care of removing its own state when they
happen. This means you should use show(FragmentManager,String)
or