Java Code Examples for android.widget.ImageButton#setContentDescription()

/**
 * Initialize a known button with a click listener and a drawable resource id,
 * and a content description resource id.
 * Sets the button visible.
 */
public void initializePushButton(int buttonId, View.OnClickListener cb,
                                 int imageId, int contentDescriptionId)
{
    ImageButton button = getImageButtonOrError(buttonId);
    button.setOnClickListener(cb);
    if (imageId != NO_RESOURCE)
    {
        button.setImageResource(imageId);
    }
    if (contentDescriptionId != NO_RESOURCE)
    {
        button.setContentDescription(mAppController
                .getAndroidContext().getResources().getString(contentDescriptionId));
    }

    if (!button.isEnabled())
    {
        button.setEnabled(true);
        if (mListener != null)
        {
            mListener.onButtonEnabledChanged(this, buttonId);
        }
    }
    button.setTag(R.string.tag_enabled_id, buttonId);

    if (button.getVisibility() != View.VISIBLE)
    {
        button.setVisibility(View.VISIBLE);
        if (mListener != null)
        {
            mListener.onButtonVisibilityChanged(this, buttonId);
        }
    }
}
 

public static View inflatePersonView(Context context, ViewGroup parent, Person person)
{
	LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	ImageButton personView = (ImageButton)inflater.inflate(R.layout.button_person, parent, false);
	personView.setImageDrawable(context.getResources().getDrawable(person.getIcon()));
	personView.setContentDescription(person.getName());
	personView.setOnClickListener(mClickPersonView);
	personView.setTag(person);
	return personView;
}
 

private void setupImageButtonListeners(ImageButton... imageButtons) {
    for(ImageButton b : imageButtons) {
        if(b != null) {
            Button info = Buttons.getButton(b.getId(), Preferences.get(b.getContext()));
            b.setImageResource(info.getIconId());
            b.setContentDescription(b.getContext().getString(info.getContentDescriptionId()));
            b.setOnClickListener(this);
            b.setOnLongClickListener(this);
        }
    }
}
 

/**
 * Creates a button to put in the set of action buttons at the right of the top chrome.
 * @param activity The activity that contains the video player.
 * @param icon The image of the action (ex. trash can).
 * @param contentDescription The text description this action. This is used in case the
 *                           action buttons do not fit in the video player. If so, an overflow
 *                           button will appear and, when clicked, it will display a list of the
 *                           content descriptions for each action.
 * @param onClickListener The handler for when the action is triggered.
 */
public void addActionButton(Activity activity,
                            Drawable icon,
                            String contentDescription,
                            View.OnClickListener onClickListener) {
  ImageButton button = new ImageButton(activity);

  button.setContentDescription(contentDescription);
  button.setImageDrawable(icon);
  button.setOnClickListener(onClickListener);

  FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(
      ViewGroup.LayoutParams.WRAP_CONTENT,
      ViewGroup.LayoutParams.WRAP_CONTENT
  );

  int margin = activity.getResources().getDisplayMetrics().densityDpi * 5;
  layoutParams.setMargins(margin, 0, margin, 0);

  button.setBackgroundColor(Color.TRANSPARENT);
  button.setLayoutParams(layoutParams);

  isFullscreen = false;

  actionButtons.add(button);

  if (playbackControlRootView != null) {
    updateActionButtons();
    updateColors();
  }
}
 

/**
 * Creates a close button that can be inserted into an infobar.
 * @param context Context to grab resources from.
 * @return {@link ImageButton} that represents a close button.
 */
static ImageButton createCloseButton(Context context) {
    TypedArray a = context.obtainStyledAttributes(new int[] {R.attr.selectableItemBackground});
    Drawable closeButtonBackground = a.getDrawable(0);
    a.recycle();

    ImageButton closeButton = new ImageButton(context);
    closeButton.setId(R.id.infobar_close_button);
    closeButton.setImageResource(R.drawable.btn_close);
    closeButton.setBackground(closeButtonBackground);
    closeButton.setContentDescription(context.getString(R.string.infobar_close));
    closeButton.setScaleType(ImageView.ScaleType.CENTER_INSIDE);

    return closeButton;
}
 

/**
 * Builds an {@link ImageButton} from the data in this params. Generated buttons should be
 * placed on the bottom bar. The button's tag will be its id.
 * @param parent The parent that the inflated {@link ImageButton}.
 * @param listener {@link OnClickListener} that should be used with the button.
 * @return Parsed list of {@link CustomButtonParams}, which is empty if the input is invalid.
 */
ImageButton buildBottomBarButton(Context context, ViewGroup parent, OnClickListener listener) {
    if (mIsOnToolbar) return null;

    ImageButton button = (ImageButton) LayoutInflater.from(context)
            .inflate(R.layout.custom_tabs_bottombar_item, parent, false);
    button.setId(mId);
    button.setImageBitmap(mIcon);
    button.setContentDescription(mDescription);
    if (mPendingIntent == null) {
        button.setEnabled(false);
    } else {
        button.setOnClickListener(listener);
    }
    button.setOnLongClickListener(new OnLongClickListener() {
        @Override
        public boolean onLongClick(View view) {
            final int screenWidth = view.getResources().getDisplayMetrics().widthPixels;
            final int screenHeight = view.getResources().getDisplayMetrics().heightPixels;
            final int[] screenPos = new int[2];
            view.getLocationOnScreen(screenPos);
            final int width = view.getWidth();

            Toast toast = Toast.makeText(
                    view.getContext(), view.getContentDescription(), Toast.LENGTH_SHORT);
            toast.setGravity(Gravity.BOTTOM | Gravity.END,
                    screenWidth - screenPos[0] - width / 2,
                    screenHeight - screenPos[1]);
            toast.show();
            return true;
        }
    });
    return button;
}
 

/**
 * Builds an {@link ImageButton} from the data in this params. Generated buttons should be
 * placed on the bottom bar. The button's tag will be its id.
 * @param parent The parent that the inflated {@link ImageButton}.
 * @param listener {@link OnClickListener} that should be used with the button.
 * @return Parsed list of {@link CustomButtonParams}, which is empty if the input is invalid.
 */
ImageButton buildBottomBarButton(Context context, ViewGroup parent, OnClickListener listener) {
    if (mIsOnToolbar) return null;

    ImageButton button = (ImageButton) LayoutInflater.from(context)
            .inflate(R.layout.custom_tabs_bottombar_item, parent, false);
    button.setId(mId);
    button.setImageBitmap(mIcon);
    button.setContentDescription(mDescription);
    if (mPendingIntent == null) {
        button.setEnabled(false);
    } else {
        button.setOnClickListener(listener);
    }
    button.setOnLongClickListener(new OnLongClickListener() {
        @Override
        public boolean onLongClick(View view) {
            final int screenWidth = view.getResources().getDisplayMetrics().widthPixels;
            final int screenHeight = view.getResources().getDisplayMetrics().heightPixels;
            final int[] screenPos = new int[2];
            view.getLocationOnScreen(screenPos);
            final int width = view.getWidth();

            Toast toast = Toast.makeText(
                    view.getContext(), view.getContentDescription(), Toast.LENGTH_SHORT);
            toast.setGravity(Gravity.BOTTOM | Gravity.END,
                    screenWidth - screenPos[0] - width / 2,
                    screenHeight - screenPos[1]);
            toast.show();
            return true;
        }
    });
    return button;
}
 

/**
 * Builds an {@link ImageButton} from the data in this params. Generated buttons should be
 * placed on the bottom bar. The button's tag will be its id.
 * @param parent The parent that the inflated {@link ImageButton}.
 * @param listener {@link OnClickListener} that should be used with the button.
 * @return Parsed list of {@link CustomButtonParams}, which is empty if the input is invalid.
 */
ImageButton buildBottomBarButton(Context context, ViewGroup parent, OnClickListener listener) {
    if (mIsOnToolbar) return null;

    ImageButton button = (ImageButton) LayoutInflater.from(context)
            .inflate(R.layout.custom_tabs_bottombar_item, parent, false);
    button.setId(mId);
    button.setImageBitmap(mIcon);
    button.setContentDescription(mDescription);
    if (mPendingIntent == null) {
        button.setEnabled(false);
    } else {
        button.setOnClickListener(listener);
    }
    button.setOnLongClickListener(new OnLongClickListener() {
        @Override
        public boolean onLongClick(View view) {
            final int screenWidth = view.getResources().getDisplayMetrics().widthPixels;
            final int screenHeight = view.getResources().getDisplayMetrics().heightPixels;
            final int[] screenPos = new int[2];
            view.getLocationOnScreen(screenPos);
            final int width = view.getWidth();

            Toast toast = Toast.makeText(
                    view.getContext(), view.getContentDescription(), Toast.LENGTH_SHORT);
            toast.setGravity(Gravity.BOTTOM | Gravity.END,
                    screenWidth - screenPos[0] - width / 2,
                    screenHeight - screenPos[1]);
            toast.show();
            return true;
        }
    });
    return button;
}
 

public static void updateContentDescription(
    ImageButton button,
    int stringId,
    String sensorId,
    Context context,
    AppAccount appAccount,
    Trial trial) {
  String content =
      ProtoSensorAppearance.getAppearanceFromProtoOrProvider(
              trial.getAppearances().get(sensorId),
              sensorId,
              AppSingleton.getInstance(context).getSensorAppearanceProvider(appAccount))
          .getName(context);
  button.setContentDescription(content);
}
 

private ImageButton inflateButton(final Context context, @DrawableRes final int icon, @StringRes final int categoryName, final ViewGroup parent) {
  final ImageButton button = (ImageButton) LayoutInflater.from(context).inflate(R.layout.emoji_view_category, parent, false);

  button.setImageDrawable(AppCompatResources.getDrawable(context, icon));
  button.setColorFilter(themeIconColor, PorterDuff.Mode.SRC_IN);
  button.setContentDescription(context.getString(categoryName));

  parent.addView(button);

  return button;
}
 

private void updateComplicationView(ComplicationProviderInfo complicationProviderInfo,
    ImageButton button, ImageView background) {
    if (complicationProviderInfo != null) {
        button.setImageIcon(complicationProviderInfo.providerIcon);
        button.setContentDescription(
            mContext.getString(R.string.edit_complication,
                complicationProviderInfo.appName + " " +
                    complicationProviderInfo.providerName));
        background.setVisibility(View.VISIBLE);
    } else {
        button.setImageDrawable(mDefaultComplicationDrawable);
        button.setContentDescription(mContext.getString(R.string.add_complication));
        background.setVisibility(View.INVISIBLE);
    }
}
 

/**
 * Constructs a layout for the specified infobar. After calling this, be sure to set the
 * message, the buttons, and/or the custom content using setMessage(), setButtons(), and
 * setCustomContent().
 *
 * @param context The context used to render.
 * @param infoBarView InfoBarView that listens to events.
 * @param iconResourceId ID of the icon to use for the infobar.
 * @param iconBitmap Bitmap for the icon to use, if the resource ID wasn't passed through.
 * @param message The message to show in the infobar.
 */
public InfoBarLayout(Context context, InfoBarView infoBarView, int iconResourceId,
        Bitmap iconBitmap, CharSequence message) {
    super(context);
    mControlLayouts = new ArrayList<InfoBarControlLayout>();

    mInfoBarView = infoBarView;

    // Cache resource values.
    Resources res = getResources();
    mSmallIconSize = res.getDimensionPixelSize(R.dimen.infobar_small_icon_size);
    mSmallIconMargin = res.getDimensionPixelSize(R.dimen.infobar_small_icon_margin);
    mBigIconSize = res.getDimensionPixelSize(R.dimen.infobar_big_icon_size);
    mBigIconMargin = res.getDimensionPixelSize(R.dimen.infobar_big_icon_margin);
    mMarginAboveButtonGroup =
            res.getDimensionPixelSize(R.dimen.infobar_margin_above_button_row);
    mMarginAboveControlGroups =
            res.getDimensionPixelSize(R.dimen.infobar_margin_above_control_groups);
    mPadding = res.getDimensionPixelOffset(R.dimen.infobar_padding);
    mMinWidth = res.getDimensionPixelSize(R.dimen.infobar_min_width);
    mAccentColor = ApiCompatibilityUtils.getColor(res, R.color.infobar_accent_blue);

    // Set up the close button. Apply padding so it has a big touch target.
    mCloseButton = new ImageButton(context);
    mCloseButton.setId(R.id.infobar_close_button);
    mCloseButton.setImageResource(R.drawable.btn_close);
    TypedArray a = getContext().obtainStyledAttributes(
            new int [] {R.attr.selectableItemBackground});
    Drawable closeButtonBackground = a.getDrawable(0);
    a.recycle();
    mCloseButton.setBackground(closeButtonBackground);
    mCloseButton.setPadding(mPadding, mPadding, mPadding, mPadding);
    mCloseButton.setOnClickListener(this);
    mCloseButton.setContentDescription(res.getString(R.string.infobar_close));
    mCloseButton.setLayoutParams(new LayoutParams(0, -mPadding, -mPadding, -mPadding));

    // Set up the icon.
    if (iconResourceId != 0 || iconBitmap != null) {
        mIconView = new ImageView(context);
        if (iconResourceId != 0) {
            mIconView.setImageResource(iconResourceId);
        } else if (iconBitmap != null) {
            mIconView.setImageBitmap(iconBitmap);
        }
        mIconView.setLayoutParams(new LayoutParams(0, 0, mSmallIconMargin, 0));
        mIconView.getLayoutParams().width = mSmallIconSize;
        mIconView.getLayoutParams().height = mSmallIconSize;
        mIconView.setFocusable(false);
    }

    // Set up the message view.
    mMessageMainText = message;
    mMessageLayout = new InfoBarControlLayout(context);
    mMessageTextView = mMessageLayout.addMainMessage(prepareMainMessageString());
}
 

/**
 * Updates the custom buttons on bottom bar area.
 * @param params The {@link CustomButtonParams} that describes the button to update.
 */
public void updateBottomBarButtons(CustomButtonParams params) {
    ImageButton button = (ImageButton) getBottomBarView().findViewById(params.getId());
    button.setContentDescription(params.getDescription());
    button.setImageDrawable(params.getIcon(mActivity.getResources()));
}
 

/**
 * Updates the custom buttons on bottom bar area.
 * @param params The {@link CustomButtonParams} that describes the button to update.
 */
public void updateBottomBarButtons(CustomButtonParams params) {
    ImageButton button = (ImageButton) getBottomBarView().findViewById(params.getId());
    button.setContentDescription(params.getDescription());
    button.setImageDrawable(params.getIcon(mActivity.getResources()));
}
 

/**
 * Constructs a layout for the specified infobar. After calling this, be sure to set the
 * message, the buttons, and/or the custom content using setMessage(), setButtons(), and
 * setCustomContent().
 *
 * @param context The context used to render.
 * @param infoBarView InfoBarView that listens to events.
 * @param iconResourceId ID of the icon to use for the infobar.
 * @param iconBitmap Bitmap for the icon to use, if the resource ID wasn't passed through.
 * @param message The message to show in the infobar.
 */
public InfoBarLayout(Context context, InfoBarView infoBarView, int iconResourceId,
        Bitmap iconBitmap, CharSequence message) {
    super(context);
    mControlLayouts = new ArrayList<InfoBarControlLayout>();

    mInfoBarView = infoBarView;

    // Cache resource values.
    Resources res = getResources();
    mSmallIconSize = res.getDimensionPixelSize(R.dimen.infobar_small_icon_size);
    mSmallIconMargin = res.getDimensionPixelSize(R.dimen.infobar_small_icon_margin);
    mBigIconSize = res.getDimensionPixelSize(R.dimen.infobar_big_icon_size);
    mBigIconMargin = res.getDimensionPixelSize(R.dimen.infobar_big_icon_margin);
    mMarginAboveButtonGroup =
            res.getDimensionPixelSize(R.dimen.infobar_margin_above_button_row);
    mMarginAboveControlGroups =
            res.getDimensionPixelSize(R.dimen.infobar_margin_above_control_groups);
    mPadding = res.getDimensionPixelOffset(R.dimen.infobar_padding);
    mMinWidth = res.getDimensionPixelSize(R.dimen.infobar_min_width);
    mAccentColor = ApiCompatibilityUtils.getColor(res, R.color.infobar_accent_blue);

    // Set up the close button. Apply padding so it has a big touch target.
    mCloseButton = new ImageButton(context);
    mCloseButton.setId(R.id.infobar_close_button);
    mCloseButton.setImageResource(R.drawable.btn_close);
    TypedArray a = getContext().obtainStyledAttributes(
            new int [] {R.attr.selectableItemBackground});
    Drawable closeButtonBackground = a.getDrawable(0);
    a.recycle();
    mCloseButton.setBackground(closeButtonBackground);
    mCloseButton.setPadding(mPadding, mPadding, mPadding, mPadding);
    mCloseButton.setOnClickListener(this);
    mCloseButton.setContentDescription(res.getString(R.string.infobar_close));
    mCloseButton.setLayoutParams(new LayoutParams(0, -mPadding, -mPadding, -mPadding));

    // Set up the icon.
    if (iconResourceId != 0 || iconBitmap != null) {
        mIconView = new ImageView(context);
        if (iconResourceId != 0) {
            mIconView.setImageResource(iconResourceId);
        } else if (iconBitmap != null) {
            mIconView.setImageBitmap(iconBitmap);
        }
        mIconView.setLayoutParams(new LayoutParams(0, 0, mSmallIconMargin, 0));
        mIconView.getLayoutParams().width = mSmallIconSize;
        mIconView.getLayoutParams().height = mSmallIconSize;
        mIconView.setFocusable(false);
    }

    // Set up the message view.
    mMessageMainText = message;
    mMessageLayout = new InfoBarControlLayout(context);
    mMessageTextView = mMessageLayout.addMainMessage(prepareMainMessageString());
}
 

/**
 * Updates the custom buttons on bottom bar area.
 * @param params The {@link CustomButtonParams} that describes the button to update.
 */
public void updateBottomBarButtons(CustomButtonParams params) {
    ImageButton button = (ImageButton) getBottomBarView().findViewById(params.getId());
    button.setContentDescription(params.getDescription());
    button.setImageDrawable(params.getIcon(mActivity.getResources()));
}
 

private void updatePlayButtonAppearance(int resource, CharSequence contentDescription) {
    ImageButton butPlay = getPlayButton();
    butPlay.setImageResource(resource);
    butPlay.setContentDescription(contentDescription);
}
 

/**
 * Initialize a panorama orientation buttons.
 */
public void initializePanoOrientationButtons(final ButtonCallback cb)
{
    int resIdImages = PhotoSphereHelper.getPanoramaOrientationOptionArrayId();
    int resIdDescriptions = PhotoSphereHelper.getPanoramaOrientationDescriptions();
    if (resIdImages > 0)
    {
        TypedArray imageIds = null;
        TypedArray descriptionIds = null;
        try
        {
            mModeOptions.setMainBar(ModeOptions.BAR_PANO);
            imageIds = mAppController
                    .getAndroidContext().getResources().obtainTypedArray(resIdImages);
            descriptionIds = mAppController
                    .getAndroidContext().getResources().obtainTypedArray(resIdDescriptions);
            mModeOptionsPano.removeAllViews();
            final boolean isHorizontal =
                    (mModeOptionsPano.getOrientation() == LinearLayout.HORIZONTAL);
            final int numImageIds = imageIds.length();
            for (int index = 0; index < numImageIds; index++)
            {
                int i;
                // if in portrait orientation (pano bar horizonal), order buttons normally
                // if in landscape orientation (pano bar vertical), reverse button order
                if (isHorizontal)
                {
                    i = index;
                } else
                {
                    i = numImageIds - index - 1;
                }

                int imageId = imageIds.getResourceId(i, 0);
                if (imageId > 0)
                {
                    ImageButton imageButton = (ImageButton) LayoutInflater
                            .from(mAppController.getAndroidContext())
                            .inflate(R.layout.mode_options_imagebutton_template,
                                    mModeOptionsPano, false);
                    imageButton.setImageResource(imageId);
                    imageButton.setTag(String.valueOf(i));
                    mModeOptionsPano.addView(imageButton);

                    int descriptionId = descriptionIds.getResourceId(i, 0);
                    if (descriptionId > 0)
                    {
                        imageButton.setContentDescription(
                                mAppController.getAndroidContext().getString(descriptionId));
                    }
                }
            }
            mModeOptionsPano.updateListeners();
            mModeOptionsPano
                    .setOnOptionClickListener(new RadioOptions.OnOptionClickListener()
                    {
                        @Override
                        public void onOptionClicked(View v)
                        {
                            if (cb != null)
                            {
                                int state = Integer.parseInt((String) v.getTag());
                                mSettingsManager.setValueByIndex(SettingsManager.SCOPE_GLOBAL,
                                        Keys.KEY_CAMERA_PANO_ORIENTATION,
                                        state);
                                cb.onStateChanged(state);
                            }
                        }
                    });
            updatePanoButtons();
        } finally
        {
            if (imageIds != null)
            {
                imageIds.recycle();
            }
            if (descriptionIds != null)
            {
                descriptionIds.recycle();
            }
        }
    }
}