io.flutter.plugin.platform.SingleViewPresentation Class Reference

Inheritance diagram for io.flutter.plugin.platform.SingleViewPresentation:

Classes
class	PresentationState

Public Member Functions
	SingleViewPresentation (Context outerContext, Display display, PlatformView view, AccessibilityEventsDelegate accessibilityEventsDelegate, int viewId, OnFocusChangeListener focusChangeListener)
	SingleViewPresentation (Context outerContext, Display display, AccessibilityEventsDelegate accessibilityEventsDelegate, PresentationState state, OnFocusChangeListener focusChangeListener, boolean startFocused)
PresentationState	detachState ()
PlatformView	getView ()

Protected Member Functions
void	onCreate (Bundle savedInstanceState)

Detailed Description

Definition at line 45 of file SingleViewPresentation.java.

Constructor & Destructor Documentation

SingleViewPresentation() [1/2]

io.flutter.plugin.platform.SingleViewPresentation.SingleViewPresentation ( Context  outerContext, Display  display, PlatformView  view, AccessibilityEventsDelegate  accessibilityEventsDelegate, int  viewId, OnFocusChangeListener  focusChangeListener  )

inline

Creates a presentation that will use the view factory to create a new platform view in the presentation's onCreate, and attach it.

Definition at line 98 of file SingleViewPresentation.java.

                                                 {
    super(new ImmContext(outerContext), display);
    this.accessibilityEventsDelegate = accessibilityEventsDelegate;
    this.viewId = viewId;
    this.focusChangeListener = focusChangeListener;
    this.outerContext = outerContext;
    state = new PresentationState();
    state.platformView = view;
    getWindow()
        .setFlags(
            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);
    getWindow().setType(WindowManager.LayoutParams.TYPE_PRIVATE_PRESENTATION);
  }

SingleViewPresentation() [2/2]

io.flutter.plugin.platform.SingleViewPresentation.SingleViewPresentation ( Context  outerContext, Display  display, AccessibilityEventsDelegate  accessibilityEventsDelegate, PresentationState  state, OnFocusChangeListener  focusChangeListener, boolean  startFocused  )

inline

Creates a presentation that will attach an already existing view as its root view.

The display's density must match the density of the context used when the view was created.

Definition at line 124 of file SingleViewPresentation.java.

                            {
    super(new ImmContext(outerContext), display);
    this.accessibilityEventsDelegate = accessibilityEventsDelegate;
    this.state = state;
    this.focusChangeListener = focusChangeListener;
    this.outerContext = outerContext;
    getWindow()
        .setFlags(
            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);
    this.startFocused = startFocused;
  }

Member Function Documentation

detachState()

PresentationState io.flutter.plugin.platform.SingleViewPresentation.detachState ( )

inline

Definition at line 203 of file SingleViewPresentation.java.

                                         {
    // These views can be null before onCreate() is called
    if (container != null) {
      container.removeAllViews();
    }
    if (rootView != null) {
      rootView.removeAllViews();
    }
    return state;
  }

getView()

PlatformView io.flutter.plugin.platform.SingleViewPresentation.getView ( )

inline

Definition at line 215 of file SingleViewPresentation.java.

                                {
    return state.platformView;
  }

onCreate()

void io.flutter.plugin.platform.SingleViewPresentation.onCreate ( Bundle  savedInstanceState )

inlineprotected

Definition at line 144 of file SingleViewPresentation.java.

                                                     {
    super.onCreate(savedInstanceState);
    // This makes sure we preserve alpha for the VD's content.
    getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
    if (state.fakeWindowViewGroup == null) {
      state.fakeWindowViewGroup = new SingleViewFakeWindowViewGroup(getContext());
    }
    if (state.windowManagerHandler == null) {
      WindowManager windowManagerDelegate =
          (WindowManager) getContext().getSystemService(WINDOW_SERVICE);
      state.windowManagerHandler =
          new WindowManagerHandler(windowManagerDelegate, state.fakeWindowViewGroup);
    }
 
    container = new FrameLayout(getContext());
 
    // Our base mContext has already been wrapped with an IMM cache at instantiation time, but
    // we want to wrap it again here to also return state.windowManagerHandler.
    Context baseContext =
        new PresentationContext(getContext(), state.windowManagerHandler, outerContext);
 
    View embeddedView = state.platformView.getView();
    if (embeddedView.getContext() instanceof MutableContextWrapper) {
      MutableContextWrapper currentContext = (MutableContextWrapper) embeddedView.getContext();
      currentContext.setBaseContext(baseContext);
    } else {
      // In some cases, such as when using LayoutInflator, the original context
      // may not be preserved. For backward compatibility with previous
      // implementations of Virtual Display, which didn't validate the context,
      // continue, but log a warning indicating that some functionality may not
      // work as expected.
      // See https://github.com/flutter/flutter/issues/110146 for context.
      Log.w(
          TAG,
          "Unexpected platform view context for view ID "
              + viewId
              + "; some functionality may not work correctly. When constructing a platform view "
              + "in the factory, ensure that the view returned from PlatformViewFactory#create "
              + "returns the provided context from getContext(). If you are unable to associate "
              + "the view with that context, consider using Hybrid Composition instead.");
    }
 
    container.addView(embeddedView);
    rootView =
        new AccessibilityDelegatingFrameLayout(
            getContext(), accessibilityEventsDelegate, embeddedView);
    rootView.addView(container);
    rootView.addView(state.fakeWindowViewGroup);
 
    embeddedView.setOnFocusChangeListener(focusChangeListener);
    rootView.setFocusableInTouchMode(true);
    if (startFocused) {
      embeddedView.requestFocus();
    } else {
      rootView.requestFocus();
    }
    setContentView(rootView);
  }

---

The documentation for this class was generated from the following file:

• shell/platform/android/io/flutter/plugin/platform/SingleViewPresentation.java