Example usage for android.view ViewGroup setAccessibilityDelegate

Introduction

In this page you can find the example usage for android.view ViewGroup setAccessibilityDelegate.

Prototype

public void setAccessibilityDelegate(@Nullable AccessibilityDelegate delegate) 

Source Link

Document

Sets a delegate for implementing accessibility support via composition (as opposed to inheritance).

Usage

From source file:com.google.android.marvin.talkback.tutorial.TutorialModule.java

/**
 * Constructs a new tutorial module for the given tutorial activity context
 * with the specified layout and title./*from  w  ww  . ja va  2  s.c om*/
 *
 * @param parentTutorial The tutorial activity containing this module.
 * @param layoutResId The resource identifier for this module's layout.
 * @param titleResId The resource identifier for this module's title string.
 */
public TutorialModule(AccessibilityTutorialActivity parentTutorial, int layoutResId, int titleResId) {
    super(parentTutorial);

    mParentTutorial = parentTutorial;
    mTitleResId = titleResId;

    final LayoutInflater inflater = mParentTutorial.getLayoutInflater();
    final View container = inflater.inflate(R.layout.tutorial_container, this, true);

    mInstructions = (TextView) container.findViewById(R.id.instructions);
    mSkip = (Button) container.findViewById(R.id.skip_button);
    mSkip.setOnClickListener(this);
    mBack = (Button) container.findViewById(R.id.back_button);
    mBack.setOnClickListener(this);
    mNext = (Button) container.findViewById(R.id.next_button);
    mNext.setOnClickListener(this);
    mFinish = (Button) container.findViewById(R.id.finish_button);
    mFinish.setOnClickListener(this);

    final TextView title = (TextView) container.findViewById(R.id.title);

    if (title != null) {
        title.setText(titleResId);
    }

    if (layoutResId != -1) {
        final ViewGroup contentHolder = (ViewGroup) container.findViewById(R.id.content);

        // Inflate the tutorial module content while dropping certain accessibility events
        contentHolder.setAccessibilityDelegate(mDropEventsDelegate);
        inflater.inflate(layoutResId, contentHolder, true);
        contentHolder.setAccessibilityDelegate(null);
    }
}

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From source file:com.android.screenspeak.tutorial.TutorialModule.java

/**
 * Constructs a new tutorial module for the given tutorial activity context
 * with the specified layout and title./*ww  w . j a va  2s . c om*/
 *
 * @param parentTutorial The tutorial activity containing this module.
 * @param layoutResId The resource identifier for this module's layout.
 * @param titleResId The resource identifier for this module's title string.
 */
TutorialModule(AccessibilityTutorialActivity parentTutorial, int layoutResId, int titleResId) {
    super(parentTutorial);

    mParentTutorial = parentTutorial;
    mTitleResId = titleResId;

    final LayoutInflater inflater = mParentTutorial.getLayoutInflater();
    final View container = inflater.inflate(R.layout.tutorial_container, this, true);

    mInstructions = (TextView) container.findViewById(R.id.instructions);
    mSkip = (Button) container.findViewById(R.id.skip_button);
    mSkip.setOnClickListener(this);
    mBack = (Button) container.findViewById(R.id.back_button);
    mBack.setOnClickListener(this);
    mNext = (Button) container.findViewById(R.id.next_button);
    mNext.setOnClickListener(this);
    mFinish = (Button) container.findViewById(R.id.finish_button);
    mFinish.setOnClickListener(this);

    final TextView title = (TextView) container.findViewById(R.id.title);

    if (title != null) {
        title.setText(titleResId);
    }

    if (layoutResId != -1) {
        final ViewGroup contentHolder = (ViewGroup) container.findViewById(R.id.content);

        // Inflate the tutorial module content while dropping certain accessibility events
        // A delegate used to drop accessibility events related to AbsListView's
        // inflation of module content.
        contentHolder.setAccessibilityDelegate(new AccessibilityDelegate() {
            @Override
            public boolean onRequestSendAccessibilityEvent(@NonNull ViewGroup host, View child,
                    AccessibilityEvent event) {
                return event.getEventType() != AccessibilityEvent.TYPE_VIEW_SCROLLED
                        && super.onRequestSendAccessibilityEvent(host, child, event);

            }
        });
        inflater.inflate(layoutResId, contentHolder, true);
        contentHolder.setAccessibilityDelegate(null);
    }
}

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