Package io.flutter.embedding.android

Class KeyEmbedderResponder

java.lang.Object

io.flutter.embedding.android.KeyEmbedderResponder

All Implemented Interfaces:

KeyboardManager.Responder

public class KeyEmbedderResponder
extends Object
implements KeyboardManager.Responder

A KeyboardManager.Responder of KeyboardManager that handles events by sending processed information in KeyData.

This class corresponds to the HardwareKeyboard API in the framework.

Nested Class Summary

Nested classes/interfaces inherited from interface io.flutter.embedding.android.KeyboardManager.Responder

KeyboardManager.Responder.OnKeyEventHandledCallback

Constructor Summary

Constructors

Constructor	Description
KeyEmbedderResponder(BinaryMessenger messenger)

Method Summary

Modifier and Type	Method	Description
Map<Long,Long>	getPressedState()	Returns an unmodifiable view of the pressed state.
void	handleEvent(KeyEvent event, KeyboardManager.Responder.OnKeyEventHandledCallback onKeyEventHandledCallback)	Parses an Android key event, performs synchronization, and dispatches Flutter events through the messenger to the framework with the given callback.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

KeyEmbedderResponder

public KeyEmbedderResponder(BinaryMessenger messenger)

Method Details

handleEvent

public void handleEvent(@NonNull
 KeyEvent event,
 @NonNull
 KeyboardManager.Responder.OnKeyEventHandledCallback onKeyEventHandledCallback)

Parses an Android key event, performs synchronization, and dispatches Flutter events through the messenger to the framework with the given callback.

At least one event will be dispatched. If there are no others, an empty event with 0 physical key and 0 logical key will be synthesized.

Specified by:

handleEvent in interface KeyboardManager.Responder

Parameters:

event - The Android key event to be handled.

onKeyEventHandledCallback - the method to call when the framework has decided whether to handle this event. This callback will always be called once and only once. If there are no non-synthesized out of this event, this callback will be called during this method with true.

getPressedState

public Map<Long,Long> getPressedState()

Returns an unmodifiable view of the pressed state.

Returns:

A map whose keys are physical keyboard key IDs and values are the corresponding logical keyboard key IDs.