Package io.flutter.embedding.android

Class FlutterView

java.lang.Object

android.view.View

android.view.ViewGroup

android.widget.FrameLayout

io.flutter.embedding.android.FlutterView

All Implemented Interfaces:

Drawable.Callback, AccessibilityEventSource, KeyEvent.Callback, ViewManager, ViewParent, KeyboardManager.ViewDelegate, io.flutter.plugin.mouse.MouseCursorPlugin.MouseCursorViewDelegate

public class FlutterView
extends FrameLayout
implements io.flutter.plugin.mouse.MouseCursorPlugin.MouseCursorViewDelegate, KeyboardManager.ViewDelegate

Displays a Flutter UI on an Android device.

A FlutterView's UI is painted by a corresponding FlutterEngine.

A FlutterView can operate in 2 different RenderModes:

1. RenderMode.surface, which paints a Flutter UI to a SurfaceView. This mode has the best performance, but a FlutterView in this mode cannot be positioned between 2 other Android Views in the z-index, nor can it be animated/transformed. Unless the special capabilities of a SurfaceTexture are required, developers should strongly prefer this render mode.
2. RenderMode.texture, which paints a Flutter UI to a SurfaceTexture. This mode is not as performant as RenderMode.surface, but a FlutterView in this mode can be animated and transformed, as well as positioned in the z-index between 2+ other Android Views. Unless the special capabilities of a SurfaceTexture are required, developers should strongly prefer the RenderMode.surface render mode.

See https://source.android.com/devices/graphics/arch-tv#surface_or_texture for more information comparing SurfaceView and TextureView.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	FlutterView.FlutterEngineAttachmentListener	Listener that is notified when a FlutterEngine is attached to/detached from a given FlutterView.

Nested classes/interfaces inherited from class android.widget.FrameLayout

FrameLayout.LayoutParams

Nested classes/interfaces inherited from class android.view.ViewGroup

ViewGroup.MarginLayoutParams, ViewGroup.OnHierarchyChangeListener

Nested classes/interfaces inherited from class android.view.View

View.AccessibilityDelegate, View.BaseSavedState, View.DragShadowBuilder, View.MeasureSpec, View.OnApplyWindowInsetsListener, View.OnAttachStateChangeListener, View.OnCapturedPointerListener, View.OnClickListener, View.OnContextClickListener, View.OnCreateContextMenuListener, View.OnDragListener, View.OnFocusChangeListener, View.OnGenericMotionListener, View.OnHoverListener, View.OnKeyListener, View.OnLayoutChangeListener, View.OnLongClickListener, View.OnScrollChangeListener, View.OnSystemUiVisibilityChangeListener, View.OnTouchListener, View.OnUnhandledKeyEventListener

Field Summary

Fields inherited from class android.view.ViewGroup

CLIP_TO_PADDING_MASK, FOCUS_AFTER_DESCENDANTS, FOCUS_BEFORE_DESCENDANTS, FOCUS_BLOCK_DESCENDANTS, LAYOUT_MODE_CLIP_BOUNDS, LAYOUT_MODE_OPTICAL_BOUNDS, PERSISTENT_ALL_CACHES, PERSISTENT_ANIMATION_CACHE, PERSISTENT_NO_CACHE, PERSISTENT_SCROLLING_CACHE

Fields inherited from class android.view.View

ACCESSIBILITY_DATA_SENSITIVE_AUTO, ACCESSIBILITY_DATA_SENSITIVE_NO, ACCESSIBILITY_DATA_SENSITIVE_YES, ACCESSIBILITY_LIVE_REGION_ASSERTIVE, ACCESSIBILITY_LIVE_REGION_NONE, ACCESSIBILITY_LIVE_REGION_POLITE, ALPHA, AUTOFILL_FLAG_INCLUDE_NOT_IMPORTANT_VIEWS, AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_DATE, AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_DAY, AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_MONTH, AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_YEAR, AUTOFILL_HINT_CREDIT_CARD_NUMBER, AUTOFILL_HINT_CREDIT_CARD_SECURITY_CODE, AUTOFILL_HINT_EMAIL_ADDRESS, AUTOFILL_HINT_NAME, AUTOFILL_HINT_PASSWORD, AUTOFILL_HINT_PHONE, AUTOFILL_HINT_POSTAL_ADDRESS, AUTOFILL_HINT_POSTAL_CODE, AUTOFILL_HINT_USERNAME, AUTOFILL_TYPE_DATE, AUTOFILL_TYPE_LIST, AUTOFILL_TYPE_NONE, AUTOFILL_TYPE_TEXT, AUTOFILL_TYPE_TOGGLE, DRAG_FLAG_ACCESSIBILITY_ACTION, DRAG_FLAG_GLOBAL, DRAG_FLAG_GLOBAL_PERSISTABLE_URI_PERMISSION, DRAG_FLAG_GLOBAL_PREFIX_URI_PERMISSION, DRAG_FLAG_GLOBAL_URI_READ, DRAG_FLAG_GLOBAL_URI_WRITE, DRAG_FLAG_OPAQUE, DRAWING_CACHE_QUALITY_AUTO, DRAWING_CACHE_QUALITY_HIGH, DRAWING_CACHE_QUALITY_LOW, EMPTY_STATE_SET, ENABLED_FOCUSED_SELECTED_STATE_SET, ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET, ENABLED_FOCUSED_STATE_SET, ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET, ENABLED_SELECTED_STATE_SET, ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET, ENABLED_STATE_SET, ENABLED_WINDOW_FOCUSED_STATE_SET, FIND_VIEWS_WITH_CONTENT_DESCRIPTION, FIND_VIEWS_WITH_TEXT, FOCUS_BACKWARD, FOCUS_DOWN, FOCUS_FORWARD, FOCUS_LEFT, FOCUS_RIGHT, FOCUS_UP, FOCUSABLE, FOCUSABLE_AUTO, FOCUSABLES_ALL, FOCUSABLES_TOUCH_MODE, FOCUSED_SELECTED_STATE_SET, FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET, FOCUSED_STATE_SET, FOCUSED_WINDOW_FOCUSED_STATE_SET, GONE, HAPTIC_FEEDBACK_ENABLED, IMPORTANT_FOR_ACCESSIBILITY_AUTO, IMPORTANT_FOR_ACCESSIBILITY_NO, IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS, IMPORTANT_FOR_ACCESSIBILITY_YES, IMPORTANT_FOR_AUTOFILL_AUTO, IMPORTANT_FOR_AUTOFILL_NO, IMPORTANT_FOR_AUTOFILL_NO_EXCLUDE_DESCENDANTS, IMPORTANT_FOR_AUTOFILL_YES, IMPORTANT_FOR_AUTOFILL_YES_EXCLUDE_DESCENDANTS, IMPORTANT_FOR_CONTENT_CAPTURE_AUTO, IMPORTANT_FOR_CONTENT_CAPTURE_NO, IMPORTANT_FOR_CONTENT_CAPTURE_NO_EXCLUDE_DESCENDANTS, IMPORTANT_FOR_CONTENT_CAPTURE_YES, IMPORTANT_FOR_CONTENT_CAPTURE_YES_EXCLUDE_DESCENDANTS, INVISIBLE, KEEP_SCREEN_ON, LAYER_TYPE_HARDWARE, LAYER_TYPE_NONE, LAYER_TYPE_SOFTWARE, LAYOUT_DIRECTION_INHERIT, LAYOUT_DIRECTION_LOCALE, LAYOUT_DIRECTION_LTR, LAYOUT_DIRECTION_RTL, MEASURED_HEIGHT_STATE_SHIFT, MEASURED_SIZE_MASK, MEASURED_STATE_MASK, MEASURED_STATE_TOO_SMALL, NO_ID, NOT_FOCUSABLE, OVER_SCROLL_ALWAYS, OVER_SCROLL_IF_CONTENT_SCROLLS, OVER_SCROLL_NEVER, PRESSED_ENABLED_FOCUSED_SELECTED_STATE_SET, PRESSED_ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET, PRESSED_ENABLED_FOCUSED_STATE_SET, PRESSED_ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET, PRESSED_ENABLED_SELECTED_STATE_SET, PRESSED_ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET, PRESSED_ENABLED_STATE_SET, PRESSED_ENABLED_WINDOW_FOCUSED_STATE_SET, PRESSED_FOCUSED_SELECTED_STATE_SET, PRESSED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET, PRESSED_FOCUSED_STATE_SET, PRESSED_FOCUSED_WINDOW_FOCUSED_STATE_SET, PRESSED_SELECTED_STATE_SET, PRESSED_SELECTED_WINDOW_FOCUSED_STATE_SET, PRESSED_STATE_SET, PRESSED_WINDOW_FOCUSED_STATE_SET, ROTATION, ROTATION_X, ROTATION_Y, SCALE_X, SCALE_Y, SCREEN_STATE_OFF, SCREEN_STATE_ON, SCROLL_AXIS_HORIZONTAL, SCROLL_AXIS_NONE, SCROLL_AXIS_VERTICAL, SCROLL_CAPTURE_HINT_AUTO, SCROLL_CAPTURE_HINT_EXCLUDE, SCROLL_CAPTURE_HINT_EXCLUDE_DESCENDANTS, SCROLL_CAPTURE_HINT_INCLUDE, SCROLL_INDICATOR_BOTTOM, SCROLL_INDICATOR_END, SCROLL_INDICATOR_LEFT, SCROLL_INDICATOR_RIGHT, SCROLL_INDICATOR_START, SCROLL_INDICATOR_TOP, SCROLLBAR_POSITION_DEFAULT, SCROLLBAR_POSITION_LEFT, SCROLLBAR_POSITION_RIGHT, SCROLLBARS_INSIDE_INSET, SCROLLBARS_INSIDE_OVERLAY, SCROLLBARS_OUTSIDE_INSET, SCROLLBARS_OUTSIDE_OVERLAY, SELECTED_STATE_SET, SELECTED_WINDOW_FOCUSED_STATE_SET, SOUND_EFFECTS_ENABLED, STATUS_BAR_HIDDEN, STATUS_BAR_VISIBLE, SYSTEM_UI_FLAG_FULLSCREEN, SYSTEM_UI_FLAG_HIDE_NAVIGATION, SYSTEM_UI_FLAG_IMMERSIVE, SYSTEM_UI_FLAG_IMMERSIVE_STICKY, SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN, SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION, SYSTEM_UI_FLAG_LAYOUT_STABLE, SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR, SYSTEM_UI_FLAG_LIGHT_STATUS_BAR, SYSTEM_UI_FLAG_LOW_PROFILE, SYSTEM_UI_FLAG_VISIBLE, SYSTEM_UI_LAYOUT_FLAGS, TEXT_ALIGNMENT_CENTER, TEXT_ALIGNMENT_GRAVITY, TEXT_ALIGNMENT_INHERIT, TEXT_ALIGNMENT_TEXT_END, TEXT_ALIGNMENT_TEXT_START, TEXT_ALIGNMENT_VIEW_END, TEXT_ALIGNMENT_VIEW_START, TEXT_DIRECTION_ANY_RTL, TEXT_DIRECTION_FIRST_STRONG, TEXT_DIRECTION_FIRST_STRONG_LTR, TEXT_DIRECTION_FIRST_STRONG_RTL, TEXT_DIRECTION_INHERIT, TEXT_DIRECTION_LOCALE, TEXT_DIRECTION_LTR, TEXT_DIRECTION_RTL, TRANSLATION_X, TRANSLATION_Y, TRANSLATION_Z, VIEW_LOG_TAG, VISIBLE, WINDOW_FOCUSED_STATE_SET, X, Y, Z

Constructor Summary

Constructors

Constructor	Description
FlutterView(Context context)	Constructs a FlutterView programmatically, without any XML attributes.
FlutterView(Context context, AttributeSet attrs)	Constructs a FlutterView in an XML-inflation-compliant manner.
FlutterView(Context context, FlutterImageView flutterImageView)	Constructs a FlutterView programmatically, without any XML attributes, uses the given FlutterImageView to render the Flutter UI.
FlutterView(Context context, FlutterSurfaceView flutterSurfaceView)	Constructs a FlutterView programmatically, without any XML attributes, uses the given FlutterSurfaceView to render the Flutter UI, and allows selection of a transparencyMode.
FlutterView(Context context, FlutterTextureView flutterTextureView)	Constructs a FlutterView programmatically, without any XML attributes, uses the given FlutterTextureView to render the Flutter UI, and allows selection of a transparencyMode.
FlutterView(Context context, RenderMode renderMode)	Deprecated.
FlutterView(Context context, RenderMode renderMode, TransparencyMode transparencyMode)	Deprecated.
FlutterView(Context context, TransparencyMode transparencyMode)	Deprecated.

Method Summary

Modifier and Type	Method	Description
boolean	acquireLatestImageViewFrame()
void	addFlutterEngineAttachmentListener(FlutterView.FlutterEngineAttachmentListener listener)	Adds a FlutterView.FlutterEngineAttachmentListener, which is notified whenever this FlutterView attached to/detaches from a FlutterEngine.
void	addOnFirstFrameRenderedListener(FlutterUiDisplayListener listener)	Adds the given listener to this FlutterView, to be notified upon Flutter's first rendered frame.
void	attachOverlaySurfaceToRender(FlutterImageView view)
void	attachToFlutterEngine(FlutterEngine flutterEngine)	Connects this FlutterView to the given FlutterEngine.
void	autofill(SparseArray<AutofillValue> values)
boolean	checkInputConnectionProxy(View view)	Allows a View that is not currently the input connection target to invoke commands on the InputMethodManager, which is otherwise disallowed.
void	convertToImageView()	Converts the current render surface to a FlutterImageView if it's not one already.
FlutterImageView	createImageView()
protected WindowInfoRepositoryCallbackAdapterWrapper	createWindowInfoRepo()
void	detachFromFlutterEngine()	Disconnects this FlutterView from a previously attached FlutterEngine.
boolean	dispatchKeyEvent(KeyEvent event)	Invoked when a hardware key is pressed or released.
View	findViewByAccessibilityIdTraversal(int accessibilityId)	Prior to Android Q, it's impossible to add real views as descendants of virtual nodes.
AccessibilityNodeProvider	getAccessibilityNodeProvider()
FlutterEngine	getAttachedFlutterEngine()	Returns the FlutterEngine to which this FlutterView is currently attached, or null if this FlutterView is not currently attached to a FlutterEngine.
BinaryMessenger	getBinaryMessenger()	Returns a BinaryMessenger to send platform messages with.
FlutterImageView	getCurrentImageSurface()
PointerIcon	getSystemPointerIcon(int type)	Gets a system pointer icon object for the given type.
boolean	hasRenderedFirstFrame()	Returns true if an attached FlutterEngine has rendered at least 1 frame to this FlutterView.
boolean	isAttachedToFlutterEngine()	Returns true if this FlutterView is currently attached to a FlutterEngine.
final WindowInsets	onApplyWindowInsets(WindowInsets insets)	Invoked when Android's desired window insets change, i.e., padding.
protected void	onAttachedToWindow()	Invoked when this is attached to the window.
protected void	onConfigurationChanged(Configuration newConfig)	Sends relevant configuration data from Android to Flutter when the Android Configuration changes.
InputConnection	onCreateInputConnection(EditorInfo outAttrs)	Creates an InputConnection to work with a InputMethodManager.
protected void	onDetachedFromWindow()	Invoked when this is detached from the window.
boolean	onGenericMotionEvent(MotionEvent event)	Invoked by Android when a generic motion event occurs, e.g., joystick movement, mouse hover, track pad touches, scroll wheel movements, etc.
boolean	onHoverEvent(MotionEvent event)	Invoked by Android when a hover-compliant input system causes a hover event.
void	onProvideAutofillVirtualStructure(ViewStructure structure, int flags)
protected void	onSizeChanged(int width, int height, int oldWidth, int oldHeight)	Invoked when this FlutterView changes size, including upon initial measure.
boolean	onTextInputKeyEvent(KeyEvent keyEvent)	Send a KeyEvent that is not handled by the keyboard responders to the text input system.
boolean	onTouchEvent(MotionEvent event)	Invoked by Android when a user touch event occurs.
void	redispatch(KeyEvent keyEvent)	Send a KeyEvent that is not handled by Flutter back to the platform.
void	removeFlutterEngineAttachmentListener(FlutterView.FlutterEngineAttachmentListener listener)	Removes a FlutterView.FlutterEngineAttachmentListener that was previously added with addFlutterEngineAttachmentListener(FlutterEngineAttachmentListener).
void	removeOnFirstFrameRenderedListener(FlutterUiDisplayListener listener)	Removes the given listener, which was previously added with addOnFirstFrameRenderedListener(FlutterUiDisplayListener).
void	revertImageView(Runnable onDone)	If the surface is rendered by a FlutterImageView, then calling this method will stop rendering to a FlutterImageView, and render on the previous surface instead.
void	setVisibility(int visibility)
protected void	setWindowInfoListenerDisplayFeatures(androidx.window.layout.WindowLayoutInfo layoutInfo)	Refresh WindowInfoTracker and DisplayCutout display features.

Methods inherited from class android.widget.FrameLayout

checkLayoutParams, generateDefaultLayoutParams, generateLayoutParams, generateLayoutParams, getAccessibilityClassName, getConsiderGoneChildrenWhenMeasuring, getMeasureAllChildren, onLayout, onMeasure, setForegroundGravity, setMeasureAllChildren, shouldDelayChildPressedState

Methods inherited from class android.view.ViewGroup

addChildrenForAccessibility, addExtraDataToAccessibilityNodeInfo, addFocusables, addKeyboardNavigationClusters, addStatesFromChildren, addTouchables, addView, addView, addView, addView, addView, addViewInLayout, addViewInLayout, attachLayoutAnimationParameters, attachViewToParent, bringChildToFront, canAnimate, childDrawableStateChanged, childHasTransientStateChanged, cleanupLayoutState, clearChildFocus, clearDisappearingChildren, clearFocus, debug, detachAllViewsFromParent, detachViewFromParent, detachViewFromParent, detachViewsFromParent, dispatchApplyWindowInsets, dispatchCapturedPointerEvent, dispatchConfigurationChanged, dispatchCreateViewTranslationRequest, dispatchDisplayHint, dispatchDragEvent, dispatchDraw, dispatchDrawableHotspotChanged, dispatchFinishTemporaryDetach, dispatchFreezeSelfOnly, dispatchGenericFocusedEvent, dispatchGenericPointerEvent, dispatchHoverEvent, dispatchKeyEventPreIme, dispatchKeyShortcutEvent, dispatchPointerCaptureChanged, dispatchProvideAutofillStructure, dispatchProvideStructure, dispatchRestoreInstanceState, dispatchSaveInstanceState, dispatchScrollCaptureSearch, dispatchSetActivated, dispatchSetPressed, dispatchSetSelected, dispatchStartTemporaryDetach, dispatchSystemUiVisibilityChanged, dispatchThawSelfOnly, dispatchTouchEvent, dispatchTrackballEvent, dispatchUnhandledMove, dispatchVisibilityChanged, dispatchWindowFocusChanged, dispatchWindowInsetsAnimationEnd, dispatchWindowInsetsAnimationPrepare, dispatchWindowInsetsAnimationProgress, dispatchWindowInsetsAnimationStart, dispatchWindowSystemUiVisiblityChanged, dispatchWindowVisibilityChanged, drawableStateChanged, drawChild, endViewTransition, findFocus, findOnBackInvokedDispatcherForChild, findViewsWithText, focusableViewAvailable, focusSearch, gatherTransparentRegion, getChildAt, getChildCount, getChildDrawingOrder, getChildDrawingOrder, getChildMeasureSpec, getChildStaticTransformation, getChildVisibleRect, getClipChildren, getClipToPadding, getDescendantFocusability, getFocusedChild, getLayoutAnimation, getLayoutAnimationListener, getLayoutMode, getLayoutTransition, getNestedScrollAxes, getOverlay, getPersistentDrawingCache, getTouchscreenBlocksFocus, hasFocus, hasTransientState, indexOfChild, invalidateChild, invalidateChildInParent, isAlwaysDrawnWithCacheEnabled, isAnimationCacheEnabled, isChildrenDrawingOrderEnabled, isChildrenDrawnWithCacheEnabled, isLayoutSuppressed, isMotionEventSplittingEnabled, isTransitionGroup, jumpDrawablesToCurrentState, layout, measureChild, measureChildren, measureChildWithMargins, notifySubtreeAccessibilityStateChanged, offsetDescendantRectToMyCoords, offsetRectIntoDescendantCoords, onCreateDrawableState, onDescendantInvalidated, onInterceptHoverEvent, onInterceptTouchEvent, onNestedFling, onNestedPreFling, onNestedPrePerformAccessibilityAction, onNestedPreScroll, onNestedScroll, onNestedScrollAccepted, onRequestFocusInDescendants, onRequestSendAccessibilityEvent, onResolvePointerIcon, onStartNestedScroll, onStopNestedScroll, onViewAdded, onViewRemoved, recomputeViewAttributes, removeAllViews, removeAllViewsInLayout, removeDetachedView, removeView, removeViewAt, removeViewInLayout, removeViews, removeViewsInLayout, requestChildFocus, requestChildRectangleOnScreen, requestDisallowInterceptTouchEvent, requestFocus, requestSendAccessibilityEvent, requestTransparentRegion, restoreDefaultFocus, scheduleLayoutAnimation, setAddStatesFromChildren, setAlwaysDrawnWithCacheEnabled, setAnimationCacheEnabled, setChildrenDrawingCacheEnabled, setChildrenDrawingOrderEnabled, setChildrenDrawnWithCacheEnabled, setClipChildren, setClipToPadding, setDescendantFocusability, setLayoutAnimation, setLayoutAnimationListener, setLayoutMode, setLayoutTransition, setMotionEventSplittingEnabled, setOnHierarchyChangeListener, setPersistentDrawingCache, setStaticTransformationsEnabled, setTouchscreenBlocksFocus, setTransitionGroup, setWindowInsetsAnimationCallback, showContextMenuForChild, showContextMenuForChild, startActionModeForChild, startActionModeForChild, startLayoutAnimation, startViewTransition, suppressLayout, updateViewLayout

Methods inherited from class android.view.View

addFocusables, addOnAttachStateChangeListener, addOnLayoutChangeListener, addOnUnhandledKeyEventListener, animate, announceForAccessibility, autofill, awakenScrollBars, awakenScrollBars, awakenScrollBars, bringToFront, buildDrawingCache, buildDrawingCache, buildLayer, callOnClick, cancelDragAndDrop, cancelLongPress, cancelPendingInputEvents, canResolveLayoutDirection, canResolveTextAlignment, canResolveTextDirection, canScrollHorizontally, canScrollVertically, clearAnimation, clearViewTranslationCallback, combineMeasuredStates, computeHorizontalScrollExtent, computeHorizontalScrollOffset, computeHorizontalScrollRange, computeScroll, computeSystemWindowInsets, computeVerticalScrollExtent, computeVerticalScrollOffset, computeVerticalScrollRange, createAccessibilityNodeInfo, createContextMenu, destroyDrawingCache, dispatchGenericMotionEvent, dispatchNestedFling, dispatchNestedPreFling, dispatchNestedPrePerformAccessibilityAction, dispatchNestedPreScroll, dispatchNestedScroll, dispatchPopulateAccessibilityEvent, draw, drawableHotspotChanged, findOnBackInvokedDispatcher, findViewById, findViewWithTag, fitSystemWindows, focusSearch, forceHasOverlappingRendering, forceLayout, generateDisplayHash, generateViewId, getAccessibilityDelegate, getAccessibilityLiveRegion, getAccessibilityPaneTitle, getAccessibilityTraversalAfter, getAccessibilityTraversalBefore, getAllowedHandwritingDelegatePackageName, getAllowedHandwritingDelegatorPackageName, getAlpha, getAnimation, getAnimationMatrix, getApplicationWindowToken, getAttributeResolutionStack, getAttributeSourceResourceMap, getAutofillHints, getAutofillId, getAutofillType, getAutofillValue, getBackground, getBackgroundTintBlendMode, getBackgroundTintList, getBackgroundTintMode, getBaseline, getBottom, getBottomFadingEdgeStrength, getBottomPaddingOffset, getCameraDistance, getClipBounds, getClipBounds, getClipToOutline, getContentCaptureSession, getContentDescription, getContext, getContextMenuInfo, getDefaultFocusHighlightEnabled, getDefaultSize, getDisplay, getDrawableState, getDrawingCache, getDrawingCache, getDrawingCacheBackgroundColor, getDrawingCacheQuality, getDrawingRect, getDrawingTime, getElevation, getExplicitStyle, getFilterTouchesWhenObscured, getFitsSystemWindows, getFocusable, getFocusables, getFocusedRect, getForeground, getForegroundGravity, getForegroundTintBlendMode, getForegroundTintList, getForegroundTintMode, getGlobalVisibleRect, getGlobalVisibleRect, getHandler, getHandwritingBoundsOffsetBottom, getHandwritingBoundsOffsetLeft, getHandwritingBoundsOffsetRight, getHandwritingBoundsOffsetTop, getHandwritingDelegatorCallback, getHasOverlappingRendering, getHeight, getHitRect, getHorizontalFadingEdgeLength, getHorizontalScrollbarHeight, getHorizontalScrollbarThumbDrawable, getHorizontalScrollbarTrackDrawable, getId, getImportantForAccessibility, getImportantForAutofill, getImportantForContentCapture, getKeepScreenOn, getKeyDispatcherState, getLabelFor, getLayerType, getLayoutDirection, getLayoutParams, getLeft, getLeftFadingEdgeStrength, getLeftPaddingOffset, getLocalVisibleRect, getLocationInSurface, getLocationInWindow, getLocationOnScreen, getMatrix, getMeasuredHeight, getMeasuredHeightAndState, getMeasuredState, getMeasuredWidth, getMeasuredWidthAndState, getMinimumHeight, getMinimumWidth, getNextClusterForwardId, getNextFocusDownId, getNextFocusForwardId, getNextFocusLeftId, getNextFocusRightId, getNextFocusUpId, getOnFocusChangeListener, getOutlineAmbientShadowColor, getOutlineProvider, getOutlineSpotShadowColor, getOverScrollMode, getPaddingBottom, getPaddingEnd, getPaddingLeft, getPaddingRight, getPaddingStart, getPaddingTop, getParent, getParentForAccessibility, getPivotX, getPivotY, getPointerIcon, getPreferKeepClearRects, getReceiveContentMimeTypes, getResources, getRevealOnFocusHint, getRight, getRightFadingEdgeStrength, getRightPaddingOffset, getRootSurfaceControl, getRootView, getRootWindowInsets, getRotation, getRotationX, getRotationY, getScaleX, getScaleY, getScrollBarDefaultDelayBeforeFade, getScrollBarFadeDuration, getScrollBarSize, getScrollBarStyle, getScrollCaptureHint, getScrollIndicators, getScrollX, getScrollY, getSolidColor, getSourceLayoutResId, getStateDescription, getStateListAnimator, getSuggestedMinimumHeight, getSuggestedMinimumWidth, getSystemGestureExclusionRects, getSystemUiVisibility, getTag, getTag, getTextAlignment, getTextDirection, getTooltipText, getTop, getTopFadingEdgeStrength, getTopPaddingOffset, getTouchables, getTouchDelegate, getTransitionAlpha, getTransitionName, getTranslationX, getTranslationY, getTranslationZ, getUniqueDrawingId, getVerticalFadingEdgeLength, getVerticalScrollbarPosition, getVerticalScrollbarThumbDrawable, getVerticalScrollbarTrackDrawable, getVerticalScrollbarWidth, getViewTranslationResponse, getViewTreeObserver, getVisibility, getWidth, getWindowAttachCount, getWindowId, getWindowInsetsController, getWindowSystemUiVisibility, getWindowToken, getWindowVisibility, getWindowVisibleDisplayFrame, getX, getY, getZ, hasExplicitFocusable, hasFocusable, hasNestedScrollingParent, hasOnClickListeners, hasOnLongClickListeners, hasOverlappingRendering, hasPointerCapture, hasWindowFocus, inflate, invalidate, invalidate, invalidate, invalidateDrawable, invalidateOutline, isAccessibilityDataSensitive, isAccessibilityFocused, isAccessibilityHeading, isActivated, isAttachedToWindow, isAutoHandwritingEnabled, isClickable, isContextClickable, isCredential, isDirty, isDrawingCacheEnabled, isDuplicateParentStateEnabled, isEnabled, isFocusable, isFocusableInTouchMode, isFocused, isFocusedByDefault, isForceDarkAllowed, isHandwritingDelegate, isHapticFeedbackEnabled, isHardwareAccelerated, isHorizontalFadingEdgeEnabled, isHorizontalScrollBarEnabled, isHovered, isImportantForAccessibility, isImportantForAutofill, isImportantForContentCapture, isInEditMode, isInLayout, isInTouchMode, isKeyboardNavigationCluster, isLaidOut, isLayoutDirectionResolved, isLayoutRequested, isLongClickable, isNestedScrollingEnabled, isOpaque, isPaddingOffsetRequired, isPaddingRelative, isPivotSet, isPreferKeepClear, isPressed, isSaveEnabled, isSaveFromParentEnabled, isScreenReaderFocusable, isScrollbarFadingEnabled, isScrollContainer, isSelected, isShowingLayoutBounds, isShown, isSoundEffectsEnabled, isTemporarilyDetached, isTextAlignmentResolved, isTextDirectionResolved, isVerticalFadingEdgeEnabled, isVerticalScrollBarEnabled, isVisibleToUserForAutofill, keyboardNavigationClusterSearch, measure, mergeDrawableStates, offsetLeftAndRight, offsetTopAndBottom, onAnimationEnd, onAnimationStart, onCancelPendingInputEvents, onCapturedPointerEvent, onCheckIsTextEditor, onCreateContextMenu, onCreateViewTranslationRequest, onCreateVirtualViewTranslationRequests, onDisplayHint, onDragEvent, onDraw, onDrawForeground, onDrawScrollBars, onFilterTouchEventForSecurity, onFinishInflate, onFinishTemporaryDetach, onFocusChanged, onHoverChanged, onInitializeAccessibilityEvent, onInitializeAccessibilityNodeInfo, onKeyDown, onKeyLongPress, onKeyMultiple, onKeyPreIme, onKeyShortcut, onKeyUp, onOverScrolled, onPointerCaptureChange, onPopulateAccessibilityEvent, onProvideAutofillStructure, onProvideContentCaptureStructure, onProvideStructure, onProvideVirtualStructure, onReceiveContent, onRestoreInstanceState, onRtlPropertiesChanged, onSaveInstanceState, onScreenStateChanged, onScrollCaptureSearch, onScrollChanged, onSetAlpha, onStartTemporaryDetach, onTrackballEvent, onViewTranslationResponse, onVirtualViewTranslationResponses, onVisibilityAggregated, onVisibilityChanged, onWindowFocusChanged, onWindowSystemUiVisibilityChanged, onWindowVisibilityChanged, overScrollBy, performAccessibilityAction, performClick, performContextClick, performContextClick, performHapticFeedback, performHapticFeedback, performLongClick, performLongClick, performReceiveContent, playSoundEffect, post, postDelayed, postInvalidate, postInvalidate, postInvalidateDelayed, postInvalidateDelayed, postInvalidateOnAnimation, postInvalidateOnAnimation, postOnAnimation, postOnAnimationDelayed, refreshDrawableState, releasePointerCapture, removeCallbacks, removeOnAttachStateChangeListener, removeOnLayoutChangeListener, removeOnUnhandledKeyEventListener, requestApplyInsets, requestFitSystemWindows, requestFocus, requestFocus, requestFocusFromTouch, requestLayout, requestPointerCapture, requestRectangleOnScreen, requestRectangleOnScreen, requestUnbufferedDispatch, requestUnbufferedDispatch, requireViewById, resetPivot, resolveSize, resolveSizeAndState, restoreHierarchyState, saveAttributeDataForStyleable, saveHierarchyState, scheduleDrawable, scrollBy, scrollTo, sendAccessibilityEvent, sendAccessibilityEventUnchecked, setAccessibilityDataSensitive, setAccessibilityDelegate, setAccessibilityHeading, setAccessibilityLiveRegion, setAccessibilityPaneTitle, setAccessibilityTraversalAfter, setAccessibilityTraversalBefore, setActivated, setAllowClickWhenDisabled, setAllowedHandwritingDelegatePackage, setAllowedHandwritingDelegatorPackage, setAlpha, setAnimation, setAnimationMatrix, setAutofillHints, setAutofillId, setAutoHandwritingEnabled, setBackground, setBackgroundColor, setBackgroundDrawable, setBackgroundResource, setBackgroundTintBlendMode, setBackgroundTintList, setBackgroundTintMode, setBottom, setCameraDistance, setClickable, setClipBounds, setClipToOutline, setContentCaptureSession, setContentDescription, setContextClickable, setDefaultFocusHighlightEnabled, setDrawingCacheBackgroundColor, setDrawingCacheEnabled, setDrawingCacheQuality, setDuplicateParentStateEnabled, setElevation, setEnabled, setFadingEdgeLength, setFilterTouchesWhenObscured, setFitsSystemWindows, setFocusable, setFocusable, setFocusableInTouchMode, setFocusedByDefault, setForceDarkAllowed, setForeground, setForegroundTintBlendMode, setForegroundTintList, setForegroundTintMode, setHandwritingBoundsOffsets, setHandwritingDelegatorCallback, setHapticFeedbackEnabled, setHasTransientState, setHorizontalFadingEdgeEnabled, setHorizontalScrollBarEnabled, setHorizontalScrollbarThumbDrawable, setHorizontalScrollbarTrackDrawable, setHovered, setId, setImportantForAccessibility, setImportantForAutofill, setImportantForContentCapture, setIsCredential, setIsHandwritingDelegate, setKeepScreenOn, setKeyboardNavigationCluster, setLabelFor, setLayerPaint, setLayerType, setLayoutDirection, setLayoutParams, setLeft, setLeftTopRightBottom, setLongClickable, setMeasuredDimension, setMinimumHeight, setMinimumWidth, setNestedScrollingEnabled, setNextClusterForwardId, setNextFocusDownId, setNextFocusForwardId, setNextFocusLeftId, setNextFocusRightId, setNextFocusUpId, setOnApplyWindowInsetsListener, setOnCapturedPointerListener, setOnClickListener, setOnContextClickListener, setOnCreateContextMenuListener, setOnDragListener, setOnFocusChangeListener, setOnGenericMotionListener, setOnHoverListener, setOnKeyListener, setOnLongClickListener, setOnReceiveContentListener, setOnScrollChangeListener, setOnSystemUiVisibilityChangeListener, setOnTouchListener, setOutlineAmbientShadowColor, setOutlineProvider, setOutlineSpotShadowColor, setOverScrollMode, setPadding, setPaddingRelative, setPivotX, setPivotY, setPointerIcon, setPreferKeepClear, setPreferKeepClearRects, setPressed, setRenderEffect, setRevealOnFocusHint, setRight, setRotation, setRotationX, setRotationY, setSaveEnabled, setSaveFromParentEnabled, setScaleX, setScaleY, setScreenReaderFocusable, setScrollBarDefaultDelayBeforeFade, setScrollBarFadeDuration, setScrollbarFadingEnabled, setScrollBarSize, setScrollBarStyle, setScrollCaptureCallback, setScrollCaptureHint, setScrollContainer, setScrollIndicators, setScrollIndicators, setScrollX, setScrollY, setSelected, setSoundEffectsEnabled, setStateDescription, setStateListAnimator, setSystemGestureExclusionRects, setSystemUiVisibility, setTag, setTag, setTextAlignment, setTextDirection, setTooltipText, setTop, setTouchDelegate, setTransitionAlpha, setTransitionName, setTransitionVisibility, setTranslationX, setTranslationY, setTranslationZ, setVerticalFadingEdgeEnabled, setVerticalScrollBarEnabled, setVerticalScrollbarPosition, setVerticalScrollbarThumbDrawable, setVerticalScrollbarTrackDrawable, setViewTranslationCallback, setWillNotCacheDrawing, setWillNotDraw, setX, setY, setZ, showContextMenu, showContextMenu, startActionMode, startActionMode, startAnimation, startDrag, startDragAndDrop, startNestedScroll, stopNestedScroll, toString, transformMatrixToGlobal, transformMatrixToLocal, unscheduleDrawable, unscheduleDrawable, updateDragShadow, verifyDrawable, willNotCacheDrawing, willNotDraw

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.flutter.plugin.mouse.MouseCursorPlugin.MouseCursorViewDelegate

setPointerIcon

Methods inherited from interface android.view.ViewParent

canResolveLayoutDirection, canResolveTextAlignment, canResolveTextDirection, createContextMenu, getLayoutDirection, getParent, getParentForAccessibility, getTextAlignment, getTextDirection, isLayoutDirectionResolved, isLayoutRequested, isTextAlignmentResolved, isTextDirectionResolved, keyboardNavigationClusterSearch, requestFitSystemWindows, requestLayout

Constructor Details

FlutterView

public FlutterView(@NonNull
 Context context)

Constructs a FlutterView programmatically, without any XML attributes.

• A FlutterSurfaceView is used to render the Flutter UI.
• transparencyMode defaults to TransparencyMode.opaque.

FlutterView requires an Activity instead of a generic Context to be compatible with PlatformViewsController.

FlutterView

@Deprecated
public FlutterView(@NonNull
 Context context,
 @NonNull
 RenderMode renderMode)

Deprecated.

Deprecated - use FlutterView(Context, FlutterSurfaceView) or FlutterView(Context, FlutterTextureView) or FlutterView(Context, FlutterImageView) instead.

FlutterView

@Deprecated
public FlutterView(@NonNull
 Context context,
 @NonNull
 TransparencyMode transparencyMode)

Deprecated.

Deprecated - use FlutterView(Context, FlutterSurfaceView) or FlutterView(Context, FlutterTextureView) instead, and configure the incoming FlutterSurfaceView or FlutterTextureView for transparency as desired.

Constructs a FlutterView programmatically, without any XML attributes, uses a FlutterSurfaceView to render the Flutter UI, and allows selection of a transparencyMode.

FlutterView requires an Activity instead of a generic Context to be compatible with PlatformViewsController.

FlutterView

public FlutterView(@NonNull
 Context context,
 @NonNull
 FlutterSurfaceView flutterSurfaceView)

Constructs a FlutterView programmatically, without any XML attributes, uses the given FlutterSurfaceView to render the Flutter UI, and allows selection of a transparencyMode.

FlutterView requires an Activity instead of a generic Context to be compatible with PlatformViewsController.

FlutterView

public FlutterView(@NonNull
 Context context,
 @NonNull
 FlutterTextureView flutterTextureView)

Constructs a FlutterView programmatically, without any XML attributes, uses the given FlutterTextureView to render the Flutter UI, and allows selection of a transparencyMode.

FlutterView requires an Activity instead of a generic Context to be compatible with PlatformViewsController.

FlutterView

public FlutterView(@NonNull
 Context context,
 @NonNull
 FlutterImageView flutterImageView)

Constructs a FlutterView programmatically, without any XML attributes, uses the given FlutterImageView to render the Flutter UI.

FlutterView requires an Activity instead of a generic Context to be compatible with PlatformViewsController.

FlutterView

public FlutterView(@NonNull
 Context context,
 @Nullable
 AttributeSet attrs)

Constructs a FlutterView in an XML-inflation-compliant manner.

FlutterView requires an Activity instead of a generic Context to be compatible with PlatformViewsController.

FlutterView

@Deprecated
public FlutterView(@NonNull
 Context context,
 @NonNull
 RenderMode renderMode,
 @NonNull
 TransparencyMode transparencyMode)

Deprecated.

Deprecated - use FlutterView(Context, FlutterSurfaceView) or FlutterView(Context, FlutterTextureView) instead, and configure the incoming FlutterSurfaceView or FlutterTextureView for transparency as desired.

Method Details

hasRenderedFirstFrame

public boolean hasRenderedFirstFrame()

Returns true if an attached FlutterEngine has rendered at least 1 frame to this FlutterView.

Returns false if no FlutterEngine is attached.

This flag is specific to a given FlutterEngine. The following hypothetical timeline demonstrates how this flag changes over time.

1. flutterEngineA is attached to this FlutterView: returns false
2. flutterEngineA renders its first frame to this FlutterView: returns true
3. flutterEngineA is detached from this FlutterView: returns false
4. flutterEngineB is attached to this FlutterView: returns false
5. flutterEngineB renders its first frame to this FlutterView: returns true

addOnFirstFrameRenderedListener

public void addOnFirstFrameRenderedListener(@NonNull
 FlutterUiDisplayListener listener)

Adds the given listener to this FlutterView, to be notified upon Flutter's first rendered frame.

removeOnFirstFrameRenderedListener

public void removeOnFirstFrameRenderedListener(@NonNull
 FlutterUiDisplayListener listener)

Removes the given listener, which was previously added with addOnFirstFrameRenderedListener(FlutterUiDisplayListener).

onConfigurationChanged

protected void onConfigurationChanged(@NonNull
 Configuration newConfig)

Sends relevant configuration data from Android to Flutter when the Android Configuration changes.

The Android Configuration might change as a result of device orientation change, device language change, device text scale factor change, etc.

Overrides:

onConfigurationChanged in class View

onSizeChanged

protected void onSizeChanged(int width,
 int height,
 int oldWidth,
 int oldHeight)

Invoked when this FlutterView changes size, including upon initial measure.

The initial measure reports an oldWidth and oldHeight of zero.

Flutter cares about the width and height of the view that displays it on the host platform. Therefore, when this method is invoked, the new width and height are communicated to Flutter as the "physical size" of the view that displays Flutter's UI.

Overrides:

onSizeChanged in class View

createWindowInfoRepo

@VisibleForTesting
protected WindowInfoRepositoryCallbackAdapterWrapper createWindowInfoRepo()

onAttachedToWindow

protected void onAttachedToWindow()

Invoked when this is attached to the window.

We register for WindowInfoTracker updates.

Overrides:

onAttachedToWindow in class ViewGroup

onDetachedFromWindow

protected void onDetachedFromWindow()

Invoked when this is detached from the window.

We unregister from WindowInfoTracker updates.

Overrides:

onDetachedFromWindow in class ViewGroup

setWindowInfoListenerDisplayFeatures

protected void setWindowInfoListenerDisplayFeatures(androidx.window.layout.WindowLayoutInfo layoutInfo)

Refresh WindowInfoTracker and DisplayCutout display features. Fold, hinge and cutout areas are populated here.

onApplyWindowInsets

@NonNull
public final WindowInsets onApplyWindowInsets(@NonNull
 WindowInsets insets)

Invoked when Android's desired window insets change, i.e., padding.

Flutter does not use a standard View hierarchy and therefore Flutter is unaware of these insets. Therefore, this method calculates the viewport metrics that Flutter should use and then sends those metrics to Flutter.

This callback is not present in API < 20, which means lower API devices will see the wider than expected padding when the status and navigation bars are hidden.

Overrides:

onApplyWindowInsets in class View

onCreateInputConnection

@Nullable
public InputConnection onCreateInputConnection(@NonNull
 EditorInfo outAttrs)

Creates an InputConnection to work with a InputMethodManager.

Any View that can take focus or process text input must implement this method by returning a non-null InputConnection. Flutter may render one or many focusable and text-input widgets, therefore FlutterView must support an InputConnection.

The InputConnection returned from this method comes from a TextInputPlugin, which is owned by this FlutterView. A TextInputPlugin exists to encapsulate the nuances of input communication, rather than spread that logic throughout this FlutterView.

Overrides:

onCreateInputConnection in class View

checkInputConnectionProxy

public boolean checkInputConnectionProxy(View view)

Allows a View that is not currently the input connection target to invoke commands on the InputMethodManager, which is otherwise disallowed.

Returns true to allow non-input-connection-targets to invoke methods on InputMethodManager, or false to exclusively allow the input connection target to invoke such methods.

Overrides:

checkInputConnectionProxy in class View

dispatchKeyEvent

public boolean dispatchKeyEvent(@NonNull
 KeyEvent event)

Invoked when a hardware key is pressed or released.

This method is typically invoked in response to the press of a physical keyboard key or a D-pad button. It is generally not invoked when a virtual software keyboard is used, though a software keyboard may choose to invoke this method in some situations.

KeyEvents are sent from Android to Flutter. KeyboardManager may do some additional work with the given KeyEvent, e.g., combine this keyCode with the previous keyCode to generate a unicode combined character.

Overrides:

dispatchKeyEvent in class ViewGroup

onTouchEvent

public boolean onTouchEvent(@NonNull
 MotionEvent event)

Invoked by Android when a user touch event occurs.

Flutter handles all of its own gesture detection and processing, therefore this method forwards all MotionEvent data from Android to Flutter.

Overrides:

onTouchEvent in class View

onGenericMotionEvent

public boolean onGenericMotionEvent(@NonNull
 MotionEvent event)

Invoked by Android when a generic motion event occurs, e.g., joystick movement, mouse hover, track pad touches, scroll wheel movements, etc.

Flutter handles all of its own gesture detection and processing, therefore this method forwards all MotionEvent data from Android to Flutter.

Overrides:

onGenericMotionEvent in class View

onHoverEvent

public boolean onHoverEvent(@NonNull
 MotionEvent event)

Invoked by Android when a hover-compliant input system causes a hover event.

An example of hover events is a stylus sitting near an Android screen. As the stylus moves from outside a View to hover over a View, or move around within a View, or moves from over a View to outside a View, a corresponding MotionEvent is reported via this method.

Hover events can be used for accessibility touch exploration and therefore are processed here for accessibility purposes.

Overrides:

onHoverEvent in class View

getAccessibilityNodeProvider

@Nullable
public AccessibilityNodeProvider getAccessibilityNodeProvider()

Overrides:

getAccessibilityNodeProvider in class View

findViewByAccessibilityIdTraversal

@Nullable
public View findViewByAccessibilityIdTraversal(int accessibilityId)

Prior to Android Q, it's impossible to add real views as descendants of virtual nodes. This breaks accessibility when an Android view is embedded in a Flutter app.

This method overrides a hidden method in ViewGroup to workaround this limitation. This solution is derivated from Jetpack Compose, and can be found in the Android source code as well.

This workaround finds the descendant View that matches the provided accessibility id.

Parameters:

accessibilityId - The view accessibility id.

Returns:

The view matching the accessibility id if any.

getSystemPointerIcon

@RequiresApi(24)
@NonNull
public PointerIcon getSystemPointerIcon(int type)

Description copied from interface: io.flutter.plugin.mouse.MouseCursorPlugin.MouseCursorViewDelegate

Gets a system pointer icon object for the given type.

If typeis not recognized, returns the default pointer icon.

This is typically implemented by calling PointerIcon.getSystemIcon(android.content.Context, int) with the context associated with this view.

Specified by:

getSystemPointerIcon in interface io.flutter.plugin.mouse.MouseCursorPlugin.MouseCursorViewDelegate

getBinaryMessenger

public BinaryMessenger getBinaryMessenger()

Description copied from interface: KeyboardManager.ViewDelegate

Returns a BinaryMessenger to send platform messages with.

Specified by:

getBinaryMessenger in interface KeyboardManager.ViewDelegate

onTextInputKeyEvent

public boolean onTextInputKeyEvent(@NonNull
 KeyEvent keyEvent)

Description copied from interface: KeyboardManager.ViewDelegate

Send a KeyEvent that is not handled by the keyboard responders to the text input system.

Specified by:

onTextInputKeyEvent in interface KeyboardManager.ViewDelegate

Parameters:

keyEvent - the KeyEvent that should be processed by the text input system. It must not be null.

Returns:

Whether the text input handles the key event.

redispatch

public void redispatch(@NonNull
 KeyEvent keyEvent)

Description copied from interface: KeyboardManager.ViewDelegate

Send a KeyEvent that is not handled by Flutter back to the platform.

Specified by:

redispatch in interface KeyboardManager.ViewDelegate

attachToFlutterEngine

public void attachToFlutterEngine(@NonNull
 FlutterEngine flutterEngine)

Connects this FlutterView to the given FlutterEngine.

This FlutterView will begin rendering the UI painted by the given FlutterEngine. This FlutterView will also begin forwarding interaction events from this FlutterView to the given FlutterEngine, e.g., user touch events, accessibility events, keyboard events, and others.

See detachFromFlutterEngine() for information on how to detach from a FlutterEngine.

detachFromFlutterEngine

public void detachFromFlutterEngine()

Disconnects this FlutterView from a previously attached FlutterEngine.

This FlutterView will clear its UI and stop forwarding all events to the previously-attached FlutterEngine. This includes touch events, accessibility events, keyboard events, and others.

See attachToFlutterEngine(FlutterEngine) for information on how to attach a FlutterEngine.

createImageView

@VisibleForTesting
@NonNull
public FlutterImageView createImageView()

getCurrentImageSurface

@VisibleForTesting
public FlutterImageView getCurrentImageSurface()

convertToImageView

public void convertToImageView()

Converts the current render surface to a FlutterImageView if it's not one already. Otherwise, it resizes the FlutterImageView based on the current view size.

revertImageView

public void revertImageView(@NonNull
 Runnable onDone)

If the surface is rendered by a FlutterImageView, then calling this method will stop rendering to a FlutterImageView, and render on the previous surface instead.

Parameters:

onDone - a callback called when Flutter UI is rendered on the previous surface. Use this callback to perform cleanups. For example, destroy overlay surfaces.

attachOverlaySurfaceToRender

public void attachOverlaySurfaceToRender(@NonNull
 FlutterImageView view)

acquireLatestImageViewFrame

public boolean acquireLatestImageViewFrame()

isAttachedToFlutterEngine

@VisibleForTesting
public boolean isAttachedToFlutterEngine()

Returns true if this FlutterView is currently attached to a FlutterEngine.

getAttachedFlutterEngine

@VisibleForTesting
@Nullable
public FlutterEngine getAttachedFlutterEngine()

Returns the FlutterEngine to which this FlutterView is currently attached, or null if this FlutterView is not currently attached to a FlutterEngine.

addFlutterEngineAttachmentListener

@VisibleForTesting
public void addFlutterEngineAttachmentListener(@NonNull
 FlutterView.FlutterEngineAttachmentListener listener)

Adds a FlutterView.FlutterEngineAttachmentListener, which is notified whenever this FlutterView attached to/detaches from a FlutterEngine.

removeFlutterEngineAttachmentListener

@VisibleForTesting
public void removeFlutterEngineAttachmentListener(@NonNull
 FlutterView.FlutterEngineAttachmentListener listener)

Removes a FlutterView.FlutterEngineAttachmentListener that was previously added with addFlutterEngineAttachmentListener(FlutterEngineAttachmentListener).

onProvideAutofillVirtualStructure

public void onProvideAutofillVirtualStructure(@NonNull
 ViewStructure structure,
 int flags)

Overrides:

onProvideAutofillVirtualStructure in class View

autofill

public void autofill(@NonNull
 SparseArray<AutofillValue> values)

Overrides:

autofill in class View

setVisibility

public void setVisibility(int visibility)

Overrides:

setVisibility in class View