Merge "[RRS] Send event to AccessibilityManager when an unselect radio button...

    <string name="screen_resolution_summary_highest">1440p QHD+</string>

    <!-- The footer message for switch screen resolution [CHAR LIMIT=NONE] -->

    <string name="screen_resolution_footer">Full resolution uses more of your battery. Switching your resolution may cause some apps to restart.</string>

    <!-- Message announced to a11y users when they selected one resolution [CHAR LIMIT=NONE] -->

    <string name="screen_resolution_selected_a11y">Selected</string>

    <!-- Display settings screen, Color mode settings title [CHAR LIMIT=30] -->

    <string name="color_mode_title">Colors</string>

import android.provider.Settings;

import android.text.TextUtils;

import android.view.Display;

import android.view.accessibility.AccessibilityEvent;

import android.view.accessibility.AccessibilityManager;

import androidx.annotation.VisibleForTesting;

import androidx.preference.PreferenceScreen;

    private IllustrationPreference mImagePreference;

    private DisplayObserver mDisplayObserver;

    private AccessibilityManager mAccessibilityManager;

    @Override

    public void onAttach(Context context) {

        mDefaultDisplay =

                context.getSystemService(DisplayManager.class).getDisplay(Display.DEFAULT_DISPLAY);

        mAccessibilityManager = context.getSystemService(AccessibilityManager.class);

        mResources = context.getResources();

        mScreenResolutionOptions =

                mResources.getStringArray(R.array.config_screen_resolution_options_strings);

        if (!mDisplayObserver.setPendingResolutionChange(selectedWidth)) {

            return;

        }

        if (mAccessibilityManager.isEnabled()) {

            AccessibilityEvent event = AccessibilityEvent.obtain();

            event.setEventType(AccessibilityEvent.TYPE_ANNOUNCEMENT);

            event.getText().add(mResources.getString(R.string.screen_resolution_selected_a11y));

            mAccessibilityManager.sendAccessibilityEvent(event);

        }

        super.onRadioButtonClicked(selected);

    }