Java Code Examples for android.view.accessibility.AccessibilityEvent#setPackageName()

private AccessibilityEvent b(int l, int i1)
{
    AccessibilityEvent accessibilityevent = AccessibilityEvent.obtain(i1);
    accessibilityevent.setEnabled(true);
    accessibilityevent.setClassName(b);
    onPopulateEventForVirtualView(l, accessibilityevent);
    if (accessibilityevent.getText().isEmpty() && accessibilityevent.getContentDescription() == null)
    {
        throw new RuntimeException("Callbacks must add text or a content description in populateEventForVirtualViewId()");
    } else
    {
        accessibilityevent.setPackageName(h.getContext().getPackageName());
        AccessibilityEventCompat.asRecord(accessibilityevent).setSource(h, l);
        return accessibilityevent;
    }
}
 

public static void makeAnnouncement(View view, CharSequence announcement) {
    if (view == null)
        return;
    if (SUtils.isApi_16_OrHigher()) {
        view.announceForAccessibility(announcement);
    } else {
        // For API 15 and earlier, we need to construct an accessibility event
        Context ctx = view.getContext();
        AccessibilityManager am = (AccessibilityManager) ctx.getSystemService(
                Context.ACCESSIBILITY_SERVICE);
        if (!am.isEnabled()) return;

        AccessibilityEvent event = AccessibilityEvent.obtain(
                AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED);
        AccessibilityRecordCompat arc = AccessibilityEventCompat.asRecord(event);
        arc.setSource(view);
        event.setClassName(view.getClass().getName());
        event.setPackageName(view.getContext().getPackageName());
        event.setEnabled(view.isEnabled());
        event.getText().add(announcement);
        am.sendAccessibilityEvent(event);
    }
}
 

private AccessibilityEvent buildAccessibilityEvent(int virtualViewId, int eventType) {
    // If we don't have any frame info, then the virtual hierarchy
    // doesn't exist in the view of the Android framework, so should
    // never send any events.
    if (!mAccessibilityManager.isEnabled() || mNativeObj == 0
            || !isFrameInfoInitialized()) {
        return null;
    }

    // This is currently needed if we want Android to visually highlight
    // the item that has accessibility focus. In practice, this doesn't seem to slow
    // things down, because it's only called when the accessibility focus moves.
    // TODO(dmazzoni): remove this if/when Android framework fixes bug.
    mView.postInvalidate();

    final AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
    event.setPackageName(mContentViewCore.getContext().getPackageName());
    event.setSource(mView, virtualViewId);
    if (!nativePopulateAccessibilityEvent(mNativeObj, event, virtualViewId, eventType)) {
        event.recycle();
        return null;
    }
    return event;
}
 

/**
 * Constructs and returns an {@link AccessibilityEvent} populated with
 * information about the specified item.
 *
 * @param virtualViewId The virtual view id for the item for which to
 *            construct an event.
 * @param eventType The type of event to construct.
 * @return An {@link AccessibilityEvent} populated with information about
 *         the specified item.
 */
private AccessibilityEvent createEventForChild(int virtualViewId, int eventType) {
    final AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
    event.setEnabled(true);
    event.setClassName(DEFAULT_CLASS_NAME);

    // Allow the client to populate the event.
    onPopulateEventForVirtualView(virtualViewId, event);

    // Make sure the developer is following the rules.
    if (event.getText().isEmpty() && (event.getContentDescription() == null)) {
        throw new RuntimeException("Callbacks must add text or a content description in "
                + "populateEventForVirtualViewId()");
    }

    // Don't allow the client to override these properties.
    event.setPackageName(mView.getContext().getPackageName());

    final AccessibilityRecordCompat record = AccessibilityEventCompat.asRecord(event);
    record.setSource(mView, virtualViewId);

    return event;
}
 

private void sendAccessibilityEvent(int virtualViewId, int eventType) {
    if (!mAccessibilityManager.isEnabled() || mNativeObj == 0) return;

    final AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
    event.setPackageName(mContentViewCore.getContext().getPackageName());
    int rootId = nativeGetRootId(mNativeObj);
    if (virtualViewId == rootId) {
        virtualViewId = View.NO_ID;
    }
    event.setSource(mView, virtualViewId);
    if (!nativePopulateAccessibilityEvent(mNativeObj, event, virtualViewId, eventType)) return;

    // This is currently needed if we want Android to draw the yellow box around
    // the item that has accessibility focus. In practice, this doesn't seem to slow
    // things down, because it's only called when the accessibility focus moves.
    // TODO(dmazzoni): remove this if/when Android framework fixes bug.
    mContentViewCore.getContainerView().postInvalidate();

    mContentViewCore.getContainerView().requestSendAccessibilityEvent(mView, event);
}
 

/**
 * 指定したテキストをTalkBackで読み上げる(TalkBackが有効な場合)
 * @param context
 * @param text
 * @throws IllegalStateException
 */
public static void announceText(@NonNull final Context context,
	@Nullable final CharSequence text) throws IllegalStateException {

	if (TextUtils.isEmpty(text) || (context == null)) return;
	final AccessibilityManager manager
		= ContextUtils.requireSystemService(context, AccessibilityManager.class);
	if ((manager != null) && manager.isEnabled()) {
		final AccessibilityEvent event = AccessibilityEvent.obtain();
		if (event != null) {
			event.setEventType(AccessibilityEventCompat.TYPE_ANNOUNCEMENT);
			event.setClassName(TalkBackHelper.class.getName());
			event.setPackageName(context.getPackageName());
			event.getText().add(text);
			manager.sendAccessibilityEvent(event);
		} else {
			throw new IllegalStateException("failed to obtain AccessibilityEvent");
		}
	} else {
		throw new IllegalStateException("AccessibilityManager is not available/or disabled");
	}
}
 

/**
 * Constructs and returns an {@link AccessibilityEvent} populated with
 * information about the specified item.
 *
 * @param virtualViewId The virtual view id for the item for which to
 *            construct an event.
 * @param eventType The type of event to construct.
 * @return An {@link AccessibilityEvent} populated with information about
 *         the specified item.
 */
private AccessibilityEvent createEventForChild(int virtualViewId, int eventType) {
    final AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
    event.setEnabled(true);
    event.setClassName(DEFAULT_CLASS_NAME);

    // Allow the client to populate the event.
    onPopulateEventForVirtualView(virtualViewId, event);

    // Make sure the developer is following the rules.
    if (event.getText().isEmpty() && (event.getContentDescription() == null)) {
        throw new RuntimeException("Callbacks must add text or a content description in "
                + "populateEventForVirtualViewId()");
    }

    // Don't allow the client to override these properties.
    event.setPackageName(mView.getContext().getPackageName());

    final AccessibilityRecordCompat record = AccessibilityEventCompat.asRecord(event);
    record.setSource(mView, virtualViewId);

    return event;
}
 

private void sendAccessibilityEventForVirtualButton(int virtualViewId, int eventType,
                                                    String text) {
    //if (AccessibilityManager.getInstance(mContext).isEnabled()) {
    if (accessibilityManager != null && accessibilityManager.isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        event.setClassName(Button.class.getName());
        event.setPackageName(getContext().getPackageName());
        event.getText().add(text);
        event.setEnabled(NumberPicker.this.isEnabled());
        AccessibilityRecordCompat.setSource(event, NumberPicker.this, virtualViewId);
        //event.setSource(NumberPicker.this, virtualViewId);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

private void announceScreenDimChanged(int announcementTextResId) {
  AccessibilityManager manager =
      (AccessibilityManager) service.getSystemService(Context.ACCESSIBILITY_SERVICE);
  if (manager.isEnabled()) {
    AccessibilityEvent event = AccessibilityEvent.obtain();
    event.setEventType(AccessibilityEvent.TYPE_ANNOUNCEMENT);
    event.setClassName(getClass().getName());
    event.setPackageName(service.getPackageName());
    event.getText().add(service.getString(announcementTextResId));
    manager.sendAccessibilityEvent(event);
  }
}
 

private void sendAccessibilityEventForVirtualButton(int virtualViewId, int eventType,
        String text) {
    if (((AccessibilityManager) getContext().getSystemService(Context.ACCESSIBILITY_SERVICE)).isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        event.setClassName(Button.class.getName());
        event.setPackageName(getContext().getPackageName());
        event.getText().add(text);
        event.setEnabled(NumberPicker.this.isEnabled());
        event.setSource(NumberPicker.this, virtualViewId);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

private void sendAccessibilityEventForVirtualButton(int virtualViewId, int eventType, String text) {
    AccessibilityManager acm = (AccessibilityManager) getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
    if (acm.isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        event.setClassName(Button.class.getName());
        event.setPackageName(getContext().getPackageName());
        event.getText().add(text);
        event.setEnabled(NumberPicker.this.isEnabled());
        event.setSource(NumberPicker.this, virtualViewId);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

private void sendAccessibilityEventForVirtualButton(int virtualViewId, int eventType,
        String text) {
    if (((AccessibilityManager) getContext().getSystemService(Context.ACCESSIBILITY_SERVICE)).isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        event.setClassName(Button.class.getName());
        event.setPackageName(getContext().getPackageName());
        event.getText().add(text);
        event.setEnabled(NumberPicker.this.isEnabled());
        event.setSource(NumberPicker.this, virtualViewId);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

private void trySendAccessibilityEvent(View view) {
  Context context = view.getContext();
  AccessibilityManager accessibilityManager =
      (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE);
  if (!accessibilityManager.isEnabled()) {
    return;
  }
  // treat toasts as notifications since they are used to
  // announce a transient piece of information to the user
  AccessibilityEvent event = AccessibilityEvent.obtain(TYPE_NOTIFICATION_STATE_CHANGED);
  event.setClassName(getClass().getName());
  event.setPackageName(context.getPackageName());
  view.dispatchPopulateAccessibilityEvent(event);
  accessibilityManager.sendAccessibilityEvent(event);
}
 

@Override
@FixWhenMinSdkVersion(14)
public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent accessEvent) {
  // IMPLEMENTATION NOTE: On pre-ICS platforms, content description of this View is ignored by
  // TalkBack. We thus explicitly set the text to be spoken for this AccessibilityEvent.
  accessEvent.setClassName(getClass().getName());
  accessEvent.setPackageName(getContext().getPackageName());
  accessEvent.getText().add(getTalkBackText());
  return true;
}
 

@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
    if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
        // Action mode started
        //TODO event.setSource(this);
        event.setClassName(getClass().getName());
        event.setPackageName(getContext().getPackageName());
        event.setContentDescription(mTitle);
    } else {
        //TODO super.onInitializeAccessibilityEvent(event);
    }
}
 

private void sendAccessibilityEvent(int eventType, int virtualId) {
    AccessibilityEvent event = AccessibilityEvent.obtain();
    event.setEventType(eventType);
    event.setSource(this, virtualId);
    event.setEnabled(true);
    event.setPackageName(getContext().getPackageName());
    if (VERBOSE) {
        Log.v(TAG, "sendAccessibilityEvent(" + eventType + ", " + virtualId + "): " + event);
    }
    getContext().getSystemService(AccessibilityManager.class).sendAccessibilityEvent(event);
}
 

@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
    if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
        // Action mode started
        //TODO event.setSource(this);
        event.setClassName(getClass().getName());
        event.setPackageName(getContext().getPackageName());
        event.setContentDescription(mTitle);
    } else {
        //TODO super.onInitializeAccessibilityEvent(event);
    }
}
 

@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
    if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
        // Action mode started
        //TODO event.setSource(this);
        event.setClassName(getClass().getName());
        event.setPackageName(getContext().getPackageName());
        event.setContentDescription(mTitle);
    } else {
        //TODO super.onInitializeAccessibilityEvent(event);
    }
}
 

private void sendAccessibilityEventForVirtualButton(int virtualViewId, int eventType,
        String text) {
    if (AccessibilityManager.getInstance(mContext).isEnabled()) {
        AccessibilityEvent event = AccessibilityEvent.obtain(eventType);
        event.setClassName(Button.class.getName());
        event.setPackageName(mContext.getPackageName());
        event.getText().add(text);
        event.setEnabled(NumberPicker.this.isEnabled());
        event.setSource(NumberPicker.this, virtualViewId);
        requestSendAccessibilityEvent(NumberPicker.this, event);
    }
}
 

@Override
public boolean dispatchPopulateAccessibilityEvent(@NonNull AccessibilityEvent event) {
    event.setClassName(getClass().getName());
    event.setPackageName(mContext.getPackageName());

    LayoutParams params = getWindow().getAttributes();
    boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) &&
        (params.height == LayoutParams.MATCH_PARENT);
    event.setFullScreen(isFullScreen);

    return false;
}