src/com/android/settings/accessibility/AccessibilityEditDialogUtils.java - platform/packages/apps/Settings - Git at Google

 /*
  * Copyright (C) 2019 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.settings.accessibility;

 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.res.TypedArray;
 import android.graphics.drawable.Drawable;
 import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.TextUtils;
 import android.text.style.ImageSpan;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.CheckBox;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.ScrollView;
 import android.widget.TextView;

 import androidx.annotation.ColorInt;
 import androidx.annotation.IntDef;
 import androidx.appcompat.app.AlertDialog;
 import androidx.core.content.ContextCompat;

 import com.android.settings.R;

 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;

 /**
  * Utility class for creating the edit dialog.
  */
 public class AccessibilityEditDialogUtils {

     /**
      * IntDef enum for dialog type that indicates different dialog for user to choose the shortcut
      * type.
      */
     @Retention(RetentionPolicy.SOURCE)
     @IntDef({
          DialogType.EDIT_SHORTCUT_GENERIC,
          DialogType.EDIT_SHORTCUT_MAGNIFICATION,
          DialogType.EDIT_MAGNIFICATION_MODE,
     })

     private @interface DialogType {
         int EDIT_SHORTCUT_GENERIC = 0;
         int EDIT_SHORTCUT_MAGNIFICATION = 1;
         int EDIT_MAGNIFICATION_MODE = 2;
     }

     /**
      * Method to show the edit shortcut dialog.
      *
      * @param context A valid context
      * @param dialogTitle The title of edit shortcut dialog
      * @param listener The listener to determine the action of edit shortcut dialog
      * @return A edit shortcut dialog for showing
      */
     public static AlertDialog showEditShortcutDialog(Context context, CharSequence dialogTitle,
             DialogInterface.OnClickListener listener) {
         final AlertDialog alertDialog = createDialog(context, DialogType.EDIT_SHORTCUT_GENERIC,
                 dialogTitle, listener);
         alertDialog.show();
         setScrollIndicators(alertDialog);
         return alertDialog;
     }

     /**
      * Method to show the edit shortcut dialog in Magnification.
      *
      * @param context A valid context
      * @param dialogTitle The title of edit shortcut dialog
      * @param listener The listener to determine the action of edit shortcut dialog
      * @return A edit shortcut dialog for showing in Magnification
      */
     public static AlertDialog showMagnificationEditShortcutDialog(Context context,
             CharSequence dialogTitle, DialogInterface.OnClickListener listener) {
         final AlertDialog alertDialog = createDialog(context,
                 DialogType.EDIT_SHORTCUT_MAGNIFICATION, dialogTitle, listener);
         alertDialog.show();
         setScrollIndicators(alertDialog);
         return alertDialog;
     }

     /**
      * Method to show the magnification mode dialog in Magnification.
      *
      * @param context A valid context
      * @param dialogTitle The title of magnify mode dialog
      * @param listener The listener to determine the action of magnify mode dialog
      * @return A magnification mode dialog in Magnification
      */
     public static AlertDialog showMagnificationModeDialog(Context context,
             CharSequence dialogTitle, DialogInterface.OnClickListener listener) {
         final AlertDialog alertDialog = createDialog(context,
                 DialogType.EDIT_MAGNIFICATION_MODE, dialogTitle, listener);
         alertDialog.show();
         setScrollIndicators(alertDialog);
         return alertDialog;
     }

     private static AlertDialog createDialog(Context context, int dialogType,
             CharSequence dialogTitle, DialogInterface.OnClickListener listener) {

         final AlertDialog alertDialog = new AlertDialog.Builder(context)
                 .setView(createEditDialogContentView(context, dialogType))
                 .setTitle(dialogTitle)
                 .setPositiveButton(R.string.save, listener)
                 .setNegativeButton(R.string.cancel,
                         (DialogInterface dialog, int which) -> dialog.dismiss())
                 .create();

         return alertDialog;
     }

     /**
      * Sets the scroll indicators for dialog view. The indicators appears while content view is
      * out of vision for vertical scrolling.
      */
     private static void setScrollIndicators(AlertDialog dialog) {
         final ScrollView scrollView = dialog.findViewById(R.id.container_layout);
         scrollView.setScrollIndicators(
                 View.SCROLL_INDICATOR_TOP | View.SCROLL_INDICATOR_BOTTOM,
                 View.SCROLL_INDICATOR_TOP | View.SCROLL_INDICATOR_BOTTOM);
     }

     /**
      * Get a content View for the edit shortcut dialog.
      *
      * @param context A valid context
      * @param dialogType The type of edit shortcut dialog
      * @return A content view suitable for viewing
      */
     private static View createEditDialogContentView(Context context, int dialogType) {
         final LayoutInflater inflater = (LayoutInflater) context.getSystemService(
                 Context.LAYOUT_INFLATER_SERVICE);

         View contentView = null;

         switch (dialogType) {
             case DialogType.EDIT_SHORTCUT_GENERIC:
                 contentView = inflater.inflate(
                         R.layout.accessibility_edit_shortcut, null);
                 initSoftwareShortcut(context, contentView);
                 initHardwareShortcut(context, contentView);
                 break;
             case DialogType.EDIT_SHORTCUT_MAGNIFICATION:
                 contentView = inflater.inflate(
                         R.layout.accessibility_edit_shortcut_magnification, null);
                 initSoftwareShortcut(context, contentView);
                 initHardwareShortcut(context, contentView);
                 initMagnifyShortcut(context, contentView);
                 initAdvancedWidget(contentView);
                 break;
             case DialogType.EDIT_MAGNIFICATION_MODE:
                 contentView = inflater.inflate(
                         R.layout.accessibility_edit_magnification_mode, null);
                 initMagnifyFullScreen(context, contentView);
                 initMagnifyWindowScreen(context, contentView);
                 break;
             default:
                 throw new IllegalArgumentException();
         }

         return contentView;
     }

     private static void initMagnifyFullScreen(Context context, View view) {
         final View dialogView = view.findViewById(R.id.magnify_full_screen);
         final CharSequence title = context.getText(
                 R.string.accessibility_magnification_area_settings_full_screen);
         // TODO(b/146019459): Use vector drawable instead of temporal png file to avoid distorted.
         setupShortcutWidget(dialogView, title, R.drawable.accessibility_magnification_full_screen);
     }

     private static void initMagnifyWindowScreen(Context context, View view) {
         final View dialogView = view.findViewById(R.id.magnify_window_screen);
         final CharSequence title = context.getText(
                 R.string.accessibility_magnification_area_settings_window_screen);
         // TODO(b/146019459): Use vector drawable instead of temporal png file to avoid distorted.
         setupShortcutWidget(dialogView, title,
                 R.drawable.accessibility_magnification_window_screen);
     }

     private static void setupShortcutWidget(View view, CharSequence titleText, int imageResId) {
         setupShortcutWidget(view, titleText, null, imageResId);
     }

     private static void setupShortcutWidget(View view, CharSequence titleText,
             CharSequence summaryText, int imageResId) {
         final CheckBox checkBox = view.findViewById(R.id.checkbox);
         checkBox.setText(titleText);
         final TextView summary = view.findViewById(R.id.summary);
         if (TextUtils.isEmpty(summaryText)) {
             summary.setVisibility(View.GONE);
         } else {
             summary.setText(summaryText);
         }
         final ImageView image = view.findViewById(R.id.image);
         image.setImageResource(imageResId);
     }

     private static void initSoftwareShortcut(Context context, View view) {
         final View dialogView = view.findViewById(R.id.software_shortcut);
         final TextView summary = dialogView.findViewById(R.id.summary);
         final int lineHeight = summary.getLineHeight();
         setupShortcutWidget(dialogView, retrieveTitle(context),
                 retrieveSummary(context, lineHeight), retrieveImageResId(context));
     }

     private static void initHardwareShortcut(Context context, View view) {
         final View dialogView = view.findViewById(R.id.hardware_shortcut);
         final CharSequence title = context.getText(
                 R.string.accessibility_shortcut_edit_dialog_title_hardware);
         final CharSequence summary = context.getText(
                 R.string.accessibility_shortcut_edit_dialog_summary_hardware);
         setupShortcutWidget(dialogView, title, summary,
                 R.drawable.accessibility_shortcut_type_hardware);
         // TODO(b/142531156): Use vector drawable instead of temporal png file to avoid distorted.
     }

     private static void initMagnifyShortcut(Context context, View view) {
         final View dialogView = view.findViewById(R.id.triple_tap_shortcut);
         final CharSequence title = context.getText(
                 R.string.accessibility_shortcut_edit_dialog_title_triple_tap);
         final CharSequence summary = context.getText(
                 R.string.accessibility_shortcut_edit_dialog_summary_triple_tap);
         setupShortcutWidget(dialogView, title, summary,
                 R.drawable.accessibility_shortcut_type_triple_tap);
         // TODO(b/142531156): Use vector drawable instead of temporal png file to avoid distorted.
     }

     private static void initAdvancedWidget(View view) {
         final LinearLayout advanced = view.findViewById(R.id.advanced_shortcut);
         final View tripleTap = view.findViewById(R.id.triple_tap_shortcut);
         advanced.setOnClickListener((View v) -> {
             advanced.setVisibility(View.GONE);
             tripleTap.setVisibility(View.VISIBLE);
         });
     }

     private static CharSequence retrieveTitle(Context context) {
         int resId = R.string.accessibility_shortcut_edit_dialog_title_software;
         if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
             resId = AccessibilityUtil.isTouchExploreEnabled(context)
                     ? R.string.accessibility_shortcut_edit_dialog_title_software_gesture_talkback
                     : R.string.accessibility_shortcut_edit_dialog_title_software_gesture;
         }
         return context.getText(resId);
     }

     private static CharSequence retrieveSummary(Context context, int lineHeight) {
         if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
             final int resId = AccessibilityUtil.isTouchExploreEnabled(context)
                     ? R.string.accessibility_shortcut_edit_dialog_summary_software_gesture_talkback
                     : R.string.accessibility_shortcut_edit_dialog_summary_software_gesture;
             return context.getText(resId);
         }
         return getSummaryStringWithIcon(context, lineHeight);
     }

     private static int retrieveImageResId(Context context) {
         // TODO(b/142531156): Use vector drawable instead of temporal png file to avoid distorted.
         int resId = R.drawable.accessibility_shortcut_type_software;
         if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
             resId = AccessibilityUtil.isTouchExploreEnabled(context)
                     ? R.drawable.accessibility_shortcut_type_software_gesture_talkback
                     : R.drawable.accessibility_shortcut_type_software_gesture;
         }
         return resId;
     }

     private static SpannableString getSummaryStringWithIcon(Context context, int lineHeight) {
         final String summary = context
                 .getString(R.string.accessibility_shortcut_edit_dialog_summary_software);
         final SpannableString spannableMessage = SpannableString.valueOf(summary);

         // Icon
         final int indexIconStart = summary.indexOf("%s");
         final int indexIconEnd = indexIconStart + 2;
         final Drawable icon = context.getDrawable(R.drawable.ic_accessibility_new);
         final ImageSpan imageSpan = new ImageSpan(icon);
         imageSpan.setContentDescription("");
         icon.setBounds(0, 0, lineHeight, lineHeight);
         spannableMessage.setSpan(
                 imageSpan, indexIconStart, indexIconEnd,
                 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

         return spannableMessage;
     }

     /**
      * Returns the color associated with the specified attribute in the context's theme.
      */
     @ColorInt
     private static int getThemeAttrColor(final Context context, final int attributeColor) {
         final int colorResId = getAttrResourceId(context, attributeColor);
         return ContextCompat.getColor(context, colorResId);
     }

     /**
      * Returns the identifier of the resolved resource assigned to the given attribute.
      */
     private static int getAttrResourceId(final Context context, final int attributeColor) {
         final int[] attrs = {attributeColor};
         final TypedArray typedArray = context.obtainStyledAttributes(attrs);
         final int colorResId = typedArray.getResourceId(0, 0);
         typedArray.recycle();
         return colorResId;
     }
 }
	/*
	* Copyright (C) 2019 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.settings.accessibility;

	import android.content.Context;
	import android.content.DialogInterface;
	import android.content.res.TypedArray;
	import android.graphics.drawable.Drawable;
	import android.text.Spannable;
	import android.text.SpannableString;
	import android.text.TextUtils;
	import android.text.style.ImageSpan;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.widget.CheckBox;
	import android.widget.ImageView;
	import android.widget.LinearLayout;
	import android.widget.ScrollView;
	import android.widget.TextView;

	import androidx.annotation.ColorInt;
	import androidx.annotation.IntDef;
	import androidx.appcompat.app.AlertDialog;
	import androidx.core.content.ContextCompat;

	import com.android.settings.R;

	import java.lang.annotation.Retention;
	import java.lang.annotation.RetentionPolicy;

	/**
	* Utility class for creating the edit dialog.
	*/
	public class AccessibilityEditDialogUtils {

	/**
	* IntDef enum for dialog type that indicates different dialog for user to choose the shortcut
	* type.
	*/
	@Retention(RetentionPolicy.SOURCE)
	@IntDef({
	DialogType.EDIT_SHORTCUT_GENERIC,
	DialogType.EDIT_SHORTCUT_MAGNIFICATION,
	DialogType.EDIT_MAGNIFICATION_MODE,
	})

	private @interface DialogType {
	int EDIT_SHORTCUT_GENERIC = 0;
	int EDIT_SHORTCUT_MAGNIFICATION = 1;
	int EDIT_MAGNIFICATION_MODE = 2;
	}

	/**
	* Method to show the edit shortcut dialog.
	*
	* @param context A valid context
	* @param dialogTitle The title of edit shortcut dialog
	* @param listener The listener to determine the action of edit shortcut dialog
	* @return A edit shortcut dialog for showing
	*/
	public static AlertDialog showEditShortcutDialog(Context context, CharSequence dialogTitle,
	DialogInterface.OnClickListener listener) {
	final AlertDialog alertDialog = createDialog(context, DialogType.EDIT_SHORTCUT_GENERIC,
	dialogTitle, listener);
	alertDialog.show();
	setScrollIndicators(alertDialog);
	return alertDialog;
	}

	/**
	* Method to show the edit shortcut dialog in Magnification.
	*
	* @param context A valid context
	* @param dialogTitle The title of edit shortcut dialog
	* @param listener The listener to determine the action of edit shortcut dialog
	* @return A edit shortcut dialog for showing in Magnification
	*/
	public static AlertDialog showMagnificationEditShortcutDialog(Context context,
	CharSequence dialogTitle, DialogInterface.OnClickListener listener) {
	final AlertDialog alertDialog = createDialog(context,
	DialogType.EDIT_SHORTCUT_MAGNIFICATION, dialogTitle, listener);
	alertDialog.show();
	setScrollIndicators(alertDialog);
	return alertDialog;
	}

	/**
	* Method to show the magnification mode dialog in Magnification.
	*
	* @param context A valid context
	* @param dialogTitle The title of magnify mode dialog
	* @param listener The listener to determine the action of magnify mode dialog
	* @return A magnification mode dialog in Magnification
	*/
	public static AlertDialog showMagnificationModeDialog(Context context,
	CharSequence dialogTitle, DialogInterface.OnClickListener listener) {
	final AlertDialog alertDialog = createDialog(context,
	DialogType.EDIT_MAGNIFICATION_MODE, dialogTitle, listener);
	alertDialog.show();
	setScrollIndicators(alertDialog);
	return alertDialog;
	}

	private static AlertDialog createDialog(Context context, int dialogType,
	CharSequence dialogTitle, DialogInterface.OnClickListener listener) {

	final AlertDialog alertDialog = new AlertDialog.Builder(context)
	.setView(createEditDialogContentView(context, dialogType))
	.setTitle(dialogTitle)
	.setPositiveButton(R.string.save, listener)
	.setNegativeButton(R.string.cancel,
	(DialogInterface dialog, int which) -> dialog.dismiss())
	.create();

	return alertDialog;
	}

	/**
	* Sets the scroll indicators for dialog view. The indicators appears while content view is
	* out of vision for vertical scrolling.
	*/
	private static void setScrollIndicators(AlertDialog dialog) {
	final ScrollView scrollView = dialog.findViewById(R.id.container_layout);
	scrollView.setScrollIndicators(
	View.SCROLL_INDICATOR_TOP \| View.SCROLL_INDICATOR_BOTTOM,
	View.SCROLL_INDICATOR_TOP \| View.SCROLL_INDICATOR_BOTTOM);
	}

	/**
	* Get a content View for the edit shortcut dialog.
	*
	* @param context A valid context
	* @param dialogType The type of edit shortcut dialog
	* @return A content view suitable for viewing
	*/
	private static View createEditDialogContentView(Context context, int dialogType) {
	final LayoutInflater inflater = (LayoutInflater) context.getSystemService(
	Context.LAYOUT_INFLATER_SERVICE);

	View contentView = null;

	switch (dialogType) {
	case DialogType.EDIT_SHORTCUT_GENERIC:
	contentView = inflater.inflate(
	R.layout.accessibility_edit_shortcut, null);
	initSoftwareShortcut(context, contentView);
	initHardwareShortcut(context, contentView);
	break;
	case DialogType.EDIT_SHORTCUT_MAGNIFICATION:
	contentView = inflater.inflate(
	R.layout.accessibility_edit_shortcut_magnification, null);
	initSoftwareShortcut(context, contentView);
	initHardwareShortcut(context, contentView);
	initMagnifyShortcut(context, contentView);
	initAdvancedWidget(contentView);
	break;
	case DialogType.EDIT_MAGNIFICATION_MODE:
	contentView = inflater.inflate(
	R.layout.accessibility_edit_magnification_mode, null);
	initMagnifyFullScreen(context, contentView);
	initMagnifyWindowScreen(context, contentView);
	break;
	default:
	throw new IllegalArgumentException();
	}

	return contentView;
	}

	private static void initMagnifyFullScreen(Context context, View view) {
	final View dialogView = view.findViewById(R.id.magnify_full_screen);
	final CharSequence title = context.getText(
	R.string.accessibility_magnification_area_settings_full_screen);
	// TODO(b/146019459): Use vector drawable instead of temporal png file to avoid distorted.
	setupShortcutWidget(dialogView, title, R.drawable.accessibility_magnification_full_screen);
	}

	private static void initMagnifyWindowScreen(Context context, View view) {
	final View dialogView = view.findViewById(R.id.magnify_window_screen);
	final CharSequence title = context.getText(
	R.string.accessibility_magnification_area_settings_window_screen);
	// TODO(b/146019459): Use vector drawable instead of temporal png file to avoid distorted.
	setupShortcutWidget(dialogView, title,
	R.drawable.accessibility_magnification_window_screen);
	}

	private static void setupShortcutWidget(View view, CharSequence titleText, int imageResId) {
	setupShortcutWidget(view, titleText, null, imageResId);
	}

	private static void setupShortcutWidget(View view, CharSequence titleText,
	CharSequence summaryText, int imageResId) {
	final CheckBox checkBox = view.findViewById(R.id.checkbox);
	checkBox.setText(titleText);
	final TextView summary = view.findViewById(R.id.summary);
	if (TextUtils.isEmpty(summaryText)) {
	summary.setVisibility(View.GONE);
	} else {
	summary.setText(summaryText);
	}
	final ImageView image = view.findViewById(R.id.image);
	image.setImageResource(imageResId);
	}

	private static void initSoftwareShortcut(Context context, View view) {
	final View dialogView = view.findViewById(R.id.software_shortcut);
	final TextView summary = dialogView.findViewById(R.id.summary);
	final int lineHeight = summary.getLineHeight();
	setupShortcutWidget(dialogView, retrieveTitle(context),
	retrieveSummary(context, lineHeight), retrieveImageResId(context));
	}

	private static void initHardwareShortcut(Context context, View view) {
	final View dialogView = view.findViewById(R.id.hardware_shortcut);
	final CharSequence title = context.getText(
	R.string.accessibility_shortcut_edit_dialog_title_hardware);
	final CharSequence summary = context.getText(
	R.string.accessibility_shortcut_edit_dialog_summary_hardware);
	setupShortcutWidget(dialogView, title, summary,
	R.drawable.accessibility_shortcut_type_hardware);
	// TODO(b/142531156): Use vector drawable instead of temporal png file to avoid distorted.
	}

	private static void initMagnifyShortcut(Context context, View view) {
	final View dialogView = view.findViewById(R.id.triple_tap_shortcut);
	final CharSequence title = context.getText(
	R.string.accessibility_shortcut_edit_dialog_title_triple_tap);
	final CharSequence summary = context.getText(
	R.string.accessibility_shortcut_edit_dialog_summary_triple_tap);
	setupShortcutWidget(dialogView, title, summary,
	R.drawable.accessibility_shortcut_type_triple_tap);
	// TODO(b/142531156): Use vector drawable instead of temporal png file to avoid distorted.
	}

	private static void initAdvancedWidget(View view) {
	final LinearLayout advanced = view.findViewById(R.id.advanced_shortcut);
	final View tripleTap = view.findViewById(R.id.triple_tap_shortcut);
	advanced.setOnClickListener((View v) -> {
	advanced.setVisibility(View.GONE);
	tripleTap.setVisibility(View.VISIBLE);
	});
	}

	private static CharSequence retrieveTitle(Context context) {
	int resId = R.string.accessibility_shortcut_edit_dialog_title_software;
	if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
	resId = AccessibilityUtil.isTouchExploreEnabled(context)
	? R.string.accessibility_shortcut_edit_dialog_title_software_gesture_talkback
	: R.string.accessibility_shortcut_edit_dialog_title_software_gesture;
	}
	return context.getText(resId);
	}

	private static CharSequence retrieveSummary(Context context, int lineHeight) {
	if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
	final int resId = AccessibilityUtil.isTouchExploreEnabled(context)
	? R.string.accessibility_shortcut_edit_dialog_summary_software_gesture_talkback
	: R.string.accessibility_shortcut_edit_dialog_summary_software_gesture;
	return context.getText(resId);
	}
	return getSummaryStringWithIcon(context, lineHeight);
	}

	private static int retrieveImageResId(Context context) {
	// TODO(b/142531156): Use vector drawable instead of temporal png file to avoid distorted.
	int resId = R.drawable.accessibility_shortcut_type_software;
	if (AccessibilityUtil.isGestureNavigateEnabled(context)) {
	resId = AccessibilityUtil.isTouchExploreEnabled(context)
	? R.drawable.accessibility_shortcut_type_software_gesture_talkback
	: R.drawable.accessibility_shortcut_type_software_gesture;
	}
	return resId;
	}

	private static SpannableString getSummaryStringWithIcon(Context context, int lineHeight) {
	final String summary = context
	.getString(R.string.accessibility_shortcut_edit_dialog_summary_software);
	final SpannableString spannableMessage = SpannableString.valueOf(summary);

	// Icon
	final int indexIconStart = summary.indexOf("%s");
	final int indexIconEnd = indexIconStart + 2;
	final Drawable icon = context.getDrawable(R.drawable.ic_accessibility_new);
	final ImageSpan imageSpan = new ImageSpan(icon);
	imageSpan.setContentDescription("");
	icon.setBounds(0, 0, lineHeight, lineHeight);
	spannableMessage.setSpan(
	imageSpan, indexIconStart, indexIconEnd,
	Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

	return spannableMessage;
	}

	/**
	* Returns the color associated with the specified attribute in the context's theme.
	*/
	@ColorInt
	private static int getThemeAttrColor(final Context context, final int attributeColor) {
	final int colorResId = getAttrResourceId(context, attributeColor);
	return ContextCompat.getColor(context, colorResId);
	}

	/**
	* Returns the identifier of the resolved resource assigned to the given attribute.
	*/
	private static int getAttrResourceId(final Context context, final int attributeColor) {
	final int[] attrs = {attributeColor};
	final TypedArray typedArray = context.obtainStyledAttributes(attrs);
	final int colorResId = typedArray.getResourceId(0, 0);
	typedArray.recycle();
	return colorResId;
	}
	}