PlatformViewsController

java.lang.Object
- io.flutter.plugin.platform.PlatformViewsController

All Implemented Interfaces:

PlatformViewsAccessibilityDelegate
```
public class PlatformViewsController
extends Object
implements PlatformViewsAccessibilityDelegate
```
Manages platform views.
Each FlutterPluginRegistry has a single platform views controller. A platform views controller can be attached to at most one Flutter view.

Constructor Summary

Constructors
Constructor and Description

PlatformViewsController()

Constructors
Constructor and Description
`PlatformViewsController()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`attach(Context context, TextureRegistry textureRegistry, DartExecutor dartExecutor)` Attaches this platform views controller to its input and output channels.
`void`	`attachAccessibilityBridge(AccessibilityBridge accessibilityBridge)` Attaches an accessibility bridge for this platform views accessibility delegate.
`void`	`attachTextInputPlugin(TextInputPlugin textInputPlugin)` Attaches this controller to a text input plugin.
`void`	`attachToFlutterRenderer(FlutterRenderer flutterRenderer)`
`void`	`attachToView(View flutterView)` This `PlatformViewsController` and its `FlutterEngine` is now attached to an Android `View` that renders a Flutter UI.
`boolean`	`checkInputConnectionProxy(View view)` Returns true if Flutter should perform input connection proxying for the view.
`FlutterOverlaySurface`	`createOverlaySurface()`
`FlutterOverlaySurface`	`createOverlaySurface(FlutterImageView imageView)`
`void`	`destroyOverlaySurfaces()`
`void`	`detach()` Detaches this platform views controller.
`void`	`detachAccessibiltyBridge()` Detaches the current accessibility bridge.
`void`	`detachFromView()` This `PlatformViewController` and its `FlutterEngine` are no longer attached to an Android `View` that renders a Flutter UI.
`void`	`detachTextInputPlugin()` Detaches this controller from the currently attached text input plugin.
`View`	`getPlatformViewById(Integer id)` Returns the root of the view hierarchy for the platform view with the requested id, or null if there is no corresponding view.
`PlatformViewRegistry`	`getRegistry()`
`void`	`onAttachedToJNI()` Invoked when the `FlutterEngine` that owns this `PlatformViewsController` attaches to JNI.
`void`	`onBeginFrame()`
`void`	`onDetachedFromJNI()` Invoked when the `FlutterEngine` that owns this `PlatformViewsController` detaches from JNI.
`void`	`onDisplayOverlaySurface(int id, int x, int y, int width, int height)`
`void`	`onDisplayPlatformView(int viewId, int x, int y, int width, int height, int viewWidth, int viewHeight, FlutterMutatorsStack mutatorsStack)`
`void`	`onEndFrame()`
`void`	`onPreEngineRestart()`
`MotionEvent`	`toMotionEvent(float density, PlatformViewsChannel.PlatformViewTouch touch, boolean usingVirtualDiplays)`
`boolean`	`usesVirtualDisplay(Integer id)` Returns true if the platform view uses virtual displays.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - PlatformViewsController
```
public PlatformViewsController()
```
- Method Detail
  - toMotionEvent
```
public MotionEvent toMotionEvent(float density,
                                 PlatformViewsChannel.PlatformViewTouch touch,
                                 boolean usingVirtualDiplays)
```
  - attach
```
public void attach(Context context,
                   TextureRegistry textureRegistry,
                   @NonNull
                   DartExecutor dartExecutor)
```
    Attaches this platform views controller to its input and output channels.
    
    Parameters:
    
    context - The base context that will be passed to embedded views created by this controller. This should be the context of the Activity hosting the Flutter application.
    
    textureRegistry - The texture registry which provides the output textures into which the embedded views will be rendered.
    
    dartExecutor - The dart execution context, which is used to setup a system channel.
  - detach
```
@UiThread
public void detach()
```
    Detaches this platform views controller.
    This is typically called when a Flutter applications moves to run in the background, or is destroyed. After calling this the platform views controller will no longer listen to it's previous messenger, and will not maintain references to the texture registry, context, and messenger passed to the previous attach call.
  - attachToView
```
public void attachToView(@NonNull
                         View flutterView)
```
    This PlatformViewsController and its FlutterEngine is now attached to an Android View that renders a Flutter UI.
  - detachFromView
```
public void detachFromView()
```
    This PlatformViewController and its FlutterEngine are no longer attached to an Android View that renders a Flutter UI.
    All platform views controlled by this PlatformViewController will be detached from the previously attached View.
  - attachAccessibilityBridge
```
public void attachAccessibilityBridge(AccessibilityBridge accessibilityBridge)
```
    Description copied from interface: PlatformViewsAccessibilityDelegate
    
    Attaches an accessibility bridge for this platform views accessibility delegate.
    Accessibility events originating in platform views belonging to this delegate will be delegated to this accessibility bridge.
    
    Specified by:
    
    attachAccessibilityBridge in interface PlatformViewsAccessibilityDelegate
  - detachAccessibiltyBridge
```
public void detachAccessibiltyBridge()
```
    Description copied from interface: PlatformViewsAccessibilityDelegate
    
    Detaches the current accessibility bridge.
    Any accessibility events sent by platform views belonging to this delegate will be ignored until a new accessibility bridge is attached.
    
    Specified by:
    
    detachAccessibiltyBridge in interface PlatformViewsAccessibilityDelegate
  - attachTextInputPlugin
```
public void attachTextInputPlugin(TextInputPlugin textInputPlugin)
```
    Attaches this controller to a text input plugin.
    While a text input plugin is available, the platform views controller interacts with it to facilitate delegation of text input connections to platform views.
    A platform views controller should be attached to a text input plugin whenever it is possible for the Flutter framework to receive text input.
  - detachTextInputPlugin
```
public void detachTextInputPlugin()
```
    Detaches this controller from the currently attached text input plugin.
  - checkInputConnectionProxy
```
public boolean checkInputConnectionProxy(@Nullable
                                         View view)
```
    Returns true if Flutter should perform input connection proxying for the view.
    If the view is a platform view managed by this platform views controller returns true. Else if the view was created in a platform view's VD, delegates the decision to the platform view's View.checkInputConnectionProxy(View) method. Else returns false.
  - getRegistry
```
public PlatformViewRegistry getRegistry()
```
  - onAttachedToJNI
```
public void onAttachedToJNI()
```
    Invoked when the FlutterEngine that owns this PlatformViewsController attaches to JNI.
  - onDetachedFromJNI
```
public void onDetachedFromJNI()
```
    Invoked when the FlutterEngine that owns this PlatformViewsController detaches from JNI.
  - onPreEngineRestart
```
public void onPreEngineRestart()
```
  - getPlatformViewById
```
public View getPlatformViewById(Integer id)
```
    Description copied from interface: PlatformViewsAccessibilityDelegate
    
    Returns the root of the view hierarchy for the platform view with the requested id, or null if there is no corresponding view.
    
    Specified by:
    
    getPlatformViewById in interface PlatformViewsAccessibilityDelegate
  - usesVirtualDisplay
```
public boolean usesVirtualDisplay(Integer id)
```
    Description copied from interface: PlatformViewsAccessibilityDelegate
    
    Returns true if the platform view uses virtual displays.
    
    Specified by:
    
    usesVirtualDisplay in interface PlatformViewsAccessibilityDelegate
  - attachToFlutterRenderer
```
public void attachToFlutterRenderer(FlutterRenderer flutterRenderer)
```
  - onDisplayPlatformView
```
public void onDisplayPlatformView(int viewId,
                                  int x,
                                  int y,
                                  int width,
                                  int height,
                                  int viewWidth,
                                  int viewHeight,
                                  FlutterMutatorsStack mutatorsStack)
```
  - onDisplayOverlaySurface
```
public void onDisplayOverlaySurface(int id,
                                    int x,
                                    int y,
                                    int width,
                                    int height)
```
  - onBeginFrame
```
public void onBeginFrame()
```
  - onEndFrame
```
public void onEndFrame()
```
  - createOverlaySurface
```
public FlutterOverlaySurface createOverlaySurface(@NonNull
                                                  FlutterImageView imageView)
```
  - createOverlaySurface
```
public FlutterOverlaySurface createOverlaySurface()
```
  - destroyOverlaySurfaces
```
public void destroyOverlaySurfaces()
```

Class PlatformViewsController

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

PlatformViewsController

Method Detail

toMotionEvent

attach

detach

attachToView

detachFromView

attachAccessibilityBridge

detachAccessibiltyBridge

attachTextInputPlugin

detachTextInputPlugin

checkInputConnectionProxy

getRegistry

onAttachedToJNI

onDetachedFromJNI

onPreEngineRestart

getPlatformViewById

usesVirtualDisplay

attachToFlutterRenderer

onDisplayPlatformView

onDisplayOverlaySurface

onBeginFrame

onEndFrame

createOverlaySurface

createOverlaySurface

destroyOverlaySurfaces