tests/ActivityViewTest/src/com/google/android/test/activityview/ActivityViewVisibilityActivity.java

/**
 * 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.google.android.test.activityview;

import static android.view.View.GONE;
import static android.view.View.INVISIBLE;
import static android.view.View.VISIBLE;

import android.app.Activity;
import android.app.ActivityView;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;

public class ActivityViewVisibilityActivity extends Activity {
    private static final String[] sVisibilityOptions = {"VISIBLE", "INVISIBLE", "GONE"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_view_visibility_activity);

        final ActivityView activityView = findViewById(R.id.activity_view);
        final Button launchButton = findViewById(R.id.activity_launch_button);
        launchButton.setOnClickListener(v -> {
            final Intent intent = new Intent(this, ActivityViewTestActivity.class);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
            activityView.startActivity(intent);
        });

        final Spinner visibilitySpinner = findViewById(R.id.visibility_spinner);
        final ArrayAdapter<String> adapter = new ArrayAdapter<>(this,
                android.R.layout.simple_spinner_item, sVisibilityOptions);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        visibilitySpinner.setAdapter(adapter);
        visibilitySpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                switch (position) {
                    case 0:
                        activityView.setVisibility(VISIBLE);
                        break;
                    case 1:
                        activityView.setVisibility(INVISIBLE);
                        break;
                    case 2:
                        activityView.setVisibility(GONE);
                        break;
                }
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {
            }
        });
    }
}