Merge "Disallow overlays for ResolverActivity"

import static android.Manifest.permission.INTERACT_ACROSS_PROFILES;

import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;

import static android.content.PermissionChecker.PID_UNKNOWN;

import static android.view.WindowManager.LayoutParams.SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;

import android.annotation.Nullable;

import android.annotation.StringRes;

import android.view.View;

import android.view.ViewGroup;

import android.view.ViewGroup.LayoutParams;

import android.view.Window;

import android.view.WindowInsets;

import android.view.WindowManager;

import android.widget.AbsListView;

import android.widget.AdapterView;

import android.widget.Button;

import java.util.Objects;

import java.util.Set;

/**

 * This activity is displayed when the system attempts to start an Intent for

 * which there is more than one matching activity, allowing the user to decide

    @Override

    protected void onStart() {

        super.onStart();

        this.getWindow().addSystemFlags(SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS);

        if (shouldShowTabs()) {

            mWorkProfileStateReceiver = createWorkProfileStateReceiver();

            registerWorkProfileStateReceiver();

    @Override

    protected void onStop() {

        super.onStop();

        final Window window = this.getWindow();

        final WindowManager.LayoutParams attrs = window.getAttributes();

        attrs.privateFlags &= ~SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;

        window.setAttributes(attrs);

        if (mRegistered) {

            mPersonalPackageMonitor.unregister();

            if (mWorkPackageMonitor != null) {