Java Code Examples for android.view.View#setContentDescription()

/**
 * Add a content description to the specified swatch view. Because the colors get added in a snaking form, every
 * other row will need to compensate for the fact that the colors are added in an opposite direction from their
 * left to right/top to bottom order, which is how the system will arrange them for accessibility purposes.
 *
 * @param rowNumber   The row number.
 * @param index       The index of the view.
 * @param rowElements The number of elements in the row.
 * @param selected    Flag indicating if the swatch is selected.
 * @param swatch      The swatch to be affected.
 */
private void setSwatchDescription(final int rowNumber, final int index, final int rowElements,
								  final boolean selected,
								  @NonNull final View swatch) {
	int accessibilityIndex;
	if (rowNumber % 2 == 0) {
		// We're in a regular-ordered row
		accessibilityIndex = index;
	}
	else {
		// We're in a backwards-ordered row.
		int rowMax = (rowNumber + 1) * mNumColumns;
		accessibilityIndex = rowMax - rowElements;
	}

	String description;
	if (selected) {
		description = String.format(mDescriptionSelected, accessibilityIndex);
	}
	else {
		description = String.format(mDescription, accessibilityIndex);
	}
	swatch.setContentDescription(description);
}
 

private void setSwatchDescription(int rowNumber, int index, int rowElements, boolean selected,
								  View swatch) {
	int accessibilityIndex;
	if (rowNumber % 2 == 0) {
		// We're in a regular-ordered row
		accessibilityIndex = index;
	} else {
		// We're in a backwards-ordered row.
		int rowMax = ((rowNumber + 1) * mNumColumns);
		accessibilityIndex = rowMax - rowElements;
	}

	String description;
	if (selected) {
		description = String.format(mDescriptionSelected, accessibilityIndex);
	} else {
		description = String.format(mDescription, accessibilityIndex);
	}
	swatch.setContentDescription(description);
}
 

@Override
public void onSelectionStateChange(List<HistoryItem> selectedItems) {
    boolean wasSelectionEnabled = mIsSelectionEnabled;
    super.onSelectionStateChange(selectedItems);

    if (mIsSelectionEnabled) {
        int numSelected = mSelectionDelegate.getSelectedItems().size();

        // If the delete menu item is shown in the overflow menu instead of as an action, there
        // may not be a view associated with it.
        View deleteButton = findViewById(R.id.selection_mode_delete_menu_id);
        if (deleteButton != null) {
            deleteButton.setContentDescription(getResources().getQuantityString(
                    R.plurals.accessibility_remove_selected_items,
                    numSelected, numSelected));
        }

        // The copy link option should only be visible when one item is selected.
        getItemById(R.id.selection_mode_copy_link).setVisible(numSelected == 1);

        if (!wasSelectionEnabled) {
            mManager.recordUserActionWithOptionalSearch("SelectionEstablished");
        }
    }
}
 

/**
 * Add a content description to the specified swatch view. Because the colors get added in a
 * snaking form, every other row will need to compensate for the fact that the colors are added
 * in an opposite direction from their left->right/top->bottom order, which is how the system
 * will arrange them for accessibility purposes.
 */
private void setSwatchDescription(int rowNumber, int index, int rowElements, boolean selected,
        View swatch, String[] contentDescriptions) {
    String description;
    if (contentDescriptions != null && contentDescriptions.length > index) {
        description = contentDescriptions[index];
    } else {
        int accessibilityIndex;
        if (rowNumber % 2 == 0) {
            // We're in a regular-ordered row
            accessibilityIndex = index + 1;
        } else {
            // We're in a backwards-ordered row.
            int rowMax = ((rowNumber + 1) * mNumColumns);
            accessibilityIndex = rowMax - rowElements;
        }

        if (selected) {
            description = String.format(mDescriptionSelected, accessibilityIndex);
        } else {
            description = String.format(mDescription, accessibilityIndex);
        }
    }
    swatch.setContentDescription(description);
}
 

/** Configures the call button area using the given entry. */
private void configureCallButton(String callText, CharSequence nbrLabel, CharSequence number) {
    View convertView = getView().findViewById(R.id.call_and_sms);
    convertView.setVisibility(TextUtils.isEmpty(number) ? View.GONE : View.VISIBLE);

    TextView text = (TextView) convertView.findViewById(R.id.call_and_sms_text);

    View mainAction = convertView.findViewById(R.id.call_and_sms_main_action);
    mainAction.setOnClickListener(mPrimaryActionListener);
    mainAction.setContentDescription(callText);
    if(TextUtils.isEmpty(number)) {
        number = "";
    }
    mainAction.setTag(SipUri.getCanonicalSipContact(number.toString(), false));
    text.setText(callText);

    TextView label = (TextView) convertView.findViewById(R.id.call_and_sms_label);
    if (TextUtils.isEmpty(nbrLabel)) {
        label.setVisibility(View.GONE);
    } else {
        label.setText(nbrLabel);
        label.setVisibility(View.VISIBLE);
    }
}
 

public static void setAccessiblityIgnore(View view) {
    view.setClickable(false);
    view.setFocusable(false);
    view.setContentDescription("");
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_NO);
    }
}
 

@Override
public void run() {
  View container = findViewById(R.id.container);

  collectId(mInstance.getRootComponent(),mIDMap);
  container.setContentDescription(JSON.toJSONString(mIDMap));

  mWXHandler.removeCallbacks(this);
  mWXHandler.postDelayed(this,2000);
}
 

/**
 * Add a content description to the specified swatch view. Because the colors get added in a
 * snaking form, every other row will need to compensate for the fact that the colors are added
 * in an opposite direction from their left->right/top->bottom order, which is how the system
 * will arrange them for accessibility purposes.
 */
private void setSwatchDescription(int rowNumber, int index, int rowElements, boolean selected,
        View swatch, String[] contentDescriptions) {
    String description;
    if (contentDescriptions != null && contentDescriptions.length > index) {
        description = contentDescriptions[index];
    } else {
        int accessibilityIndex;
        if (mBackwardsOrder) {
            if (rowNumber % 2 == 0) {
                // We're in a regular-ordered row
                accessibilityIndex = index + 1;
            } else {
                // We're in a backwards-ordered row.
                int rowMax = ((rowNumber + 1) * mNumColumns);
                accessibilityIndex = rowMax - rowElements;
            }
        } else {
            accessibilityIndex = index + 1;
        }
        if (selected) {
            description = String.format(mDescriptionSelected, accessibilityIndex);
        } else {
            description = String.format(mDescription, accessibilityIndex);
        }
    }
    swatch.setContentDescription(description);
}
 

private void populateTabStrip() {
    final PagerAdapter adapter = mViewPager.getAdapter();
    final OnClickListener tabClickListener = new TabClickListener();

    for (int i = 0; i < adapter.getCount(); i++) {
        View tabView = null;

        TabItemSpec tabItem;
        if (this.mTabItems != null && this.mTabItems.length > i) {
            tabItem = this.mTabItems[i];
        } else {
            tabItem = new TabItemSpec();
            tabItem.title = adapter.getPageTitle(i).toString();
        }

        tabView = createDefaultTabView(getContext(), tabItem);

        tabView.setOnClickListener(tabClickListener);
        String desc = mContentDescriptions.get(i, null);
        if (desc != null) {
            tabView.setContentDescription(desc);
        }

        mTabStrip.addView(tabView);
        if (i == mViewPager.getCurrentItem()) {
            tabView.setSelected(true);
        }
    }
}
 

/**
 * Swap the content descriptions.
 */
void swapContentDescriptions(WaypointsListViewHolder endViewHolder) {
    final View startDragView = getDraggableView();
    final View endDragView = endViewHolder.getDraggableView();
    final View startRemoveView = getRemovableView();
    final View endRemoveView = endViewHolder.getRemovableView();
    final CharSequence startDragViewContentDescription = startDragView.getContentDescription();
    final CharSequence startRemoveViewContentDescription = startRemoveView.getContentDescription();
    // start swapping
    startDragView.setContentDescription(endDragView.getContentDescription());
    startRemoveView.setContentDescription(endRemoveView.getContentDescription());
    endDragView.setContentDescription(startDragViewContentDescription);
    endRemoveView.setContentDescription(startRemoveViewContentDescription);
}
 

@Test
public void hasContentDescriptionTest() {
  View view = new View(context);
  view.setContentDescription(null);
  assertFalse(hasContentDescription().matches(view));
  CharSequence testText = "test text!";
  view.setContentDescription(testText);
  assertTrue(hasContentDescription().matches(view));
}
 

@Test
public void withContentDescriptionFromResourceId() {
  View view = new View(context);
  view.setContentDescription(context.getString(R.string.something));
  assertFalse(withContentDescription(R.string.other_string).matches(view));
  assertTrue(withContentDescription(R.string.something).matches(view));
}
 

/**
 * Constructs a new omnibox suggestion view.
 *
 * @param context The context used to construct the suggestion view.
 * @param locationBar The location bar showing these suggestions.
 */
public SuggestionView(Context context, LocationBar locationBar) {
    super(context);
    mLocationBar = locationBar;

    mSuggestionHeight =
            context.getResources().getDimensionPixelOffset(R.dimen.omnibox_suggestion_height);
    mSuggestionAnswerHeight =
            context.getResources().getDimensionPixelOffset(
                    R.dimen.omnibox_suggestion_answer_height);

    TypedArray a = getContext().obtainStyledAttributes(
            new int [] {R.attr.selectableItemBackground});
    Drawable itemBackground = a.getDrawable(0);
    a.recycle();

    mContentsView = new SuggestionContentsContainer(context, itemBackground);
    addView(mContentsView);

    mRefineView = new View(context) {
        @Override
        protected void onDraw(Canvas canvas) {
            super.onDraw(canvas);

            if (mRefineIcon == null) return;
            canvas.save();
            canvas.translate(
                    (getMeasuredWidth() - mRefineIcon.getIntrinsicWidth()) / 2f,
                    (getMeasuredHeight() - mRefineIcon.getIntrinsicHeight()) / 2f);
            mRefineIcon.draw(canvas);
            canvas.restore();
        }

        @Override
        public void setVisibility(int visibility) {
            super.setVisibility(visibility);

            if (visibility == VISIBLE) {
                setClickable(true);
                setFocusable(true);
            } else {
                setClickable(false);
                setFocusable(false);
            }
        }

        @Override
        protected void drawableStateChanged() {
            super.drawableStateChanged();

            if (mRefineIcon != null && mRefineIcon.isStateful()) {
                mRefineIcon.setState(getDrawableState());
            }
        }
    };
    mRefineView.setContentDescription(getContext().getString(
            R.string.accessibility_omnibox_btn_refine));

    // Although this has the same background as the suggestion view, it can not be shared as
    // it will result in the state of the drawable being shared and always showing up in the
    // refine view.
    mRefineView.setBackground(itemBackground.getConstantState().newDrawable());
    mRefineView.setId(R.id.refine_view_id);
    mRefineView.setClickable(true);
    mRefineView.setFocusable(true);
    mRefineView.setLayoutParams(new LayoutParams(0, 0));
    addView(mRefineView);

    mRefineWidth = getResources()
            .getDimensionPixelSize(R.dimen.omnibox_suggestion_refine_width);

    mUrlBar = (UrlBar) locationBar.getContainerView().findViewById(R.id.url_bar);

    mPhoneUrlBarLeftOffsetPx = getResources().getDimensionPixelOffset(
            R.dimen.omnibox_suggestion_phone_url_bar_left_offset);
    mPhoneUrlBarLeftOffsetRtlPx = getResources().getDimensionPixelOffset(
            R.dimen.omnibox_suggestion_phone_url_bar_left_offset_rtl);
}
 

private void populateTabStrip() {
    final PagerAdapter adapter = mViewPager.getAdapter();
    final OnClickListener tabClickListener = new TabClickListener();

    for (int i = 0; i < adapter.getCount(); i++) {
        View tabView = null;
        View tabTitleView = null;

        if (mTabViewLayoutId != 0) {
            // If there is a custom tab view layout id set, try and inflate it
            tabView = LayoutInflater.from(getContext()).inflate(mTabViewLayoutId, mTabStrip, false);
            tabTitleView = tabView.findViewById(mTabViewTextViewId);
        }

        if (tabView == null) {
            tabView = createDefaultTabView(getContext());
        }

        if (tabTitleView == null && TextView.class.isInstance(tabView)) {
            tabTitleView = tabView;
        }

        if (mDistributeEvenly) {
            LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) tabView.getLayoutParams();
            lp.width = 0;
            lp.weight = 1;
        }

        if (TextView.class.isInstance(tabTitleView)) {
            ((TextView) tabTitleView).setText(adapter.getPageTitle(i));
        } else if (ImageView.class.isInstance(tabTitleView) && adapter instanceof TabIconProvider){
            TabIconProvider mTabIconProvider = (TabIconProvider) adapter;
            tabTitleView.setBackgroundResource(mTabIconProvider.getPageIconResId(i));
        }

        tabView.setOnClickListener(tabClickListener);

        String desc = mContentDescriptions.get(i, null);
        if (desc != null) {
            tabView.setContentDescription(desc);
        }

        mTabStrip.addView(tabView);
        if (i == mViewPager.getCurrentItem()) {
            tabView.setSelected(true);
        }
    }
}
 

private void trySetContentDescription(View root, int viewId, int contDescResId) {
    View target = root.findViewById(viewId);
    if (target != null) {
        target.setContentDescription(mContext.getString(contDescResId));
    }
}
 

@Override
public View getView(Optional<View> optionalView,
                    LocalFilmstripDataAdapter adapter, boolean isInProgress,
                    final VideoClickedCallback videoClickedCallback)
{

    View view;
    VideoViewHolder viewHolder;

    if (optionalView.isPresent())
    {
        view = optionalView.get();
        viewHolder = getViewHolder(view);
    } else
    {
        view = LayoutInflater.from(mContext).inflate(R.layout.filmstrip_video, null);
        view.setTag(R.id.mediadata_tag_viewtype, getItemViewType().ordinal());
        ImageView videoView = (ImageView) view.findViewById(R.id.video_view);
        ImageView playButton = (ImageView) view.findViewById(R.id.play_button);

        viewHolder = new VideoViewHolder(videoView, playButton);
        view.setTag(R.id.mediadata_tag_target, viewHolder);
    }

    if (viewHolder != null)
    {
        // ImageView for the play icon.
        viewHolder.mPlayButton.setOnClickListener(new View.OnClickListener()
        {
            @Override
            public void onClick(View v)
            {
                videoClickedCallback.playVideo(mData.getUri(), mData.getTitle());
            }
        });

        view.setContentDescription(mContext.getResources().getString(
                R.string.video_date_content_description,
                mDateFormatter.format(mData.getLastModifiedDate())));

        renderTiny(viewHolder);
    } else
    {
        Log.w(TAG, "getView called with a view that is not compatible with VideoItem.");
    }

    return view;
}
 

private void trySetContentDescription(View root, int viewId, int contDescResId) {
    View target = root.findViewById(viewId);
    if (target != null) {
        target.setContentDescription(mContext.getString(contDescResId));
    }
}
 

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedState) {
  int layoutId;
  if (exercise == null || tutorialController == null || callback == null) {
    return null;
  }
  if (exercise.needScrollableContainer()) {
    layoutId = R.layout.tutorial_lesson_fragment_scrollable;
  } else {
    layoutId = R.layout.tutorial_lesson_fragment;
  }
  View view = inflater.inflate(layoutId, container, false);

  description = (TextView) view.findViewById(R.id.description);
  description.setText(page.getDescription());

  TextView subTitle = (TextView) view.findViewById(R.id.part_subtitle);
  subTitle.setText(page.getSubtitle());

  TextView currentPage = (TextView) view.findViewById(R.id.current_page);
  TextView next = (TextView) view.findViewById(R.id.next);
  if (this.currentPage < lesson.getPagesCount() - 1) {
    next.setText(R.string.tutorial_next);
    currentPage.setVisibility(View.VISIBLE);
    currentPage.setText(
        getString(
            R.string.tutorial_page_number_of, this.currentPage + 1, lesson.getPagesCount() - 1));
  } else if (tutorialController.getNextLesson(lesson) == null) {
    next.setText(R.string.tutorial_home);
  } else {
    next.setText(R.string.tutorial_next_lesson);
  }
  next.setOnClickListener(this);

  View previous = view.findViewById(R.id.previous_page);
  previous.setOnClickListener(this);
  previous.setContentDescription(getString(R.string.tutorial_previous));

  ViewGroup contentContainer = (ViewGroup) view.findViewById(R.id.practice_area);
  View contentView = page.getExercise().getContentView(inflater, contentContainer);
  ViewGroup.LayoutParams params =
      new ViewGroup.LayoutParams(
          ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
  contentContainer.addView(contentView, params);

  return view;
}
 

/**
 * Constructs a new omnibox suggestion view.
 *
 * @param context The context used to construct the suggestion view.
 * @param locationBar The location bar showing these suggestions.
 */
public SuggestionView(Context context, LocationBar locationBar) {
    super(context);
    mLocationBar = locationBar;

    mSuggestionHeight =
            context.getResources().getDimensionPixelOffset(R.dimen.omnibox_suggestion_height);
    mSuggestionAnswerHeight =
            context.getResources().getDimensionPixelOffset(
                    R.dimen.omnibox_suggestion_answer_height);

    TypedArray a = getContext().obtainStyledAttributes(
            new int [] {R.attr.selectableItemBackground});
    Drawable itemBackground = a.getDrawable(0);
    a.recycle();

    mContentsView = new SuggestionContentsContainer(context, itemBackground);
    addView(mContentsView);

    mRefineView = new View(context) {
        @Override
        protected void onDraw(Canvas canvas) {
            super.onDraw(canvas);

            if (mRefineIcon == null) return;
            canvas.save();
            canvas.translate(
                    (getMeasuredWidth() - mRefineIcon.getIntrinsicWidth()) / 2f,
                    (getMeasuredHeight() - mRefineIcon.getIntrinsicHeight()) / 2f);
            mRefineIcon.draw(canvas);
            canvas.restore();
        }

        @Override
        public void setVisibility(int visibility) {
            super.setVisibility(visibility);

            if (visibility == VISIBLE) {
                setClickable(true);
                setFocusable(true);
            } else {
                setClickable(false);
                setFocusable(false);
            }
        }

        @Override
        protected void drawableStateChanged() {
            super.drawableStateChanged();

            if (mRefineIcon != null && mRefineIcon.isStateful()) {
                mRefineIcon.setState(getDrawableState());
            }
        }
    };
    mRefineView.setContentDescription(getContext().getString(
            R.string.accessibility_omnibox_btn_refine));

    // Although this has the same background as the suggestion view, it can not be shared as
    // it will result in the state of the drawable being shared and always showing up in the
    // refine view.
    mRefineView.setBackground(itemBackground.getConstantState().newDrawable());
    mRefineView.setId(R.id.refine_view_id);
    mRefineView.setClickable(true);
    mRefineView.setFocusable(true);
    mRefineView.setLayoutParams(new LayoutParams(0, 0));
    addView(mRefineView);

    mRefineWidth = getResources()
            .getDimensionPixelSize(R.dimen.omnibox_suggestion_refine_width);

    mUrlBar = (UrlBar) locationBar.getContainerView().findViewById(R.id.url_bar);

    mPhoneUrlBarLeftOffsetPx = getResources().getDimensionPixelOffset(
            R.dimen.omnibox_suggestion_phone_url_bar_left_offset);
    mPhoneUrlBarLeftOffsetRtlPx = getResources().getDimensionPixelOffset(
            R.dimen.omnibox_suggestion_phone_url_bar_left_offset_rtl);
}
 

private void populateTabStrip() {
    final PagerAdapter adapter = mViewPager.getAdapter();
    final OnClickListener tabClickListener = new TabClickListener();

    for (int i = 0; i < adapter.getCount(); i++) {
        View tabView = null;
        Version1TextView tabTitleView = null;

        if (mTabViewLayoutId != 0) {
            // If there is a custom tab view layout id set, try and inflate it
            tabView = LayoutInflater.from(getContext()).inflate(mTabViewLayoutId, mTabStrip,
                    false);
            tabTitleView = (Version1TextView) tabView.findViewById(mTabViewTextViewId);
        }

        if (tabView == null) {
            tabView = createDefaultTabView(getContext());
        }

        if (tabTitleView == null && Version1TextView.class.isInstance(tabView)) {
            tabTitleView = (Version1TextView) tabView;
        }

        if (mDistributeEvenly) {
            LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) tabView.getLayoutParams();
            lp.width = 0;
            lp.weight = 1;
        }
        tabTitleView.setText(adapter.getPageTitle(i));
        tabTitleView.setTextSize(12);
        tabTitleView.setTypeface(FontUtils.getDemi(getContext()));
        tabTitleView.setTextColor(getResources().getColorStateList(R.color.sliding_tab_text_color_selector));
        tabView.setOnClickListener(tabClickListener);
        String desc = mContentDescriptions.get(i, null);
        if (desc != null) {
            tabView.setContentDescription(desc);
        }

        mTabStrip.addView(tabView);
        if (i == mViewPager.getCurrentItem()) {
            tabView.setSelected(true);
        }
    }
}