Package io.flutter.embedding.android

Class AndroidTouchProcessor

java.lang.Object

io.flutter.embedding.android.AndroidTouchProcessor

public class AndroidTouchProcessor
extends Object

Sends touch information from Android to Flutter in a format that Flutter understands.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	AndroidTouchProcessor.PointerChange
static interface	AndroidTouchProcessor.PointerDeviceKind
static interface	AndroidTouchProcessor.PointerSignalKind

Constructor Summary

Constructors

Constructor	Description
AndroidTouchProcessor(FlutterRenderer renderer, boolean trackMotionEvents)	Constructs an AndroidTouchProcessor that will send touch event data to the Flutter execution context represented by the given FlutterRenderer.

Method Summary

Modifier and Type	Method	Description
boolean	onGenericMotionEvent(MotionEvent event)	Sends the given generic MotionEvent data to Flutter in a format that Flutter understands.
boolean	onTouchEvent(MotionEvent event)
boolean	onTouchEvent(MotionEvent event, Matrix transformMatrix)	Sends the given MotionEvent data to Flutter in a format that Flutter understands.

Methods inherited from class java.lang.Object

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

Constructor Detail

AndroidTouchProcessor

public AndroidTouchProcessor(@NonNull
                             FlutterRenderer renderer,
                             boolean trackMotionEvents)

Constructs an AndroidTouchProcessor that will send touch event data to the Flutter execution context represented by the given FlutterRenderer.

Parameters:

renderer - The object that manages textures for rendering.

trackMotionEvents - This is used to query motion events when platform views are rendered.

Method Detail

onTouchEvent

public boolean onTouchEvent(@NonNull
                            MotionEvent event)

onTouchEvent

public boolean onTouchEvent(@NonNull
                            MotionEvent event,
                            @NonNull
                            Matrix transformMatrix)

Sends the given MotionEvent data to Flutter in a format that Flutter understands.

Parameters:

event - The motion event from the view.

transformMatrix - Applies to the view that originated the event. It's used to transform the gesture pointers into screen coordinates.

Returns:

True if the event was handled.

onGenericMotionEvent

public boolean onGenericMotionEvent(@NonNull
                                    MotionEvent event)

Sends the given generic MotionEvent data to Flutter in a format that Flutter understands.

Generic motion events include joystick movement, mouse hover, track pad touches, scroll wheel movements, etc.

Parameters:

event - The generic motion event being processed.

Returns:

True if the event was handled.