Set parent activity for search.

        <activity android:name=".search2.SearchActivity"

                  android:label="@string/search_settings"

                  android:icon="@drawable/ic_search_history">

                  android:icon="@drawable/ic_search_history"

                  android:parentActivityName="Settings">

        </activity>

        <!-- Top-level settings -->

/*

 * Copyright (C) 2017 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.search;

import android.content.Context;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.content.pm.ResolveInfo;

import android.support.test.InstrumentationRegistry;

import android.support.test.filters.SmallTest;

import android.support.test.runner.AndroidJUnit4;

import com.android.settings.Settings;

import com.android.settings.search2.SearchActivity;

import org.junit.Test;

import org.junit.runner.RunWith;

import java.util.List;

import static org.junit.Assert.assertEquals;

import static org.junit.Assert.assertFalse;

@SmallTest

@RunWith(AndroidJUnit4.class)

public class SearchActivityTest {

    @Test

    public void shouldHaveParentActivity() {

        final Context context = InstrumentationRegistry.getTargetContext();

        final PackageManager packageManager = context.getPackageManager();

        final Intent intent = new Intent(context, SearchActivity.class);

        final List<ResolveInfo> resolveInfos = packageManager.queryIntentActivities(

                intent, PackageManager.GET_META_DATA);

        assertFalse(resolveInfos.isEmpty());

        assertEquals(Settings.class.getName(), resolveInfos.get(0).activityInfo.parentActivityName);

    }

}