1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.android.test.uibench.listview;
17 
18 import android.os.Bundle;
19 import android.widget.ListAdapter;
20 
21 import androidx.appcompat.app.AppCompatActivity;
22 import androidx.fragment.app.Fragment;
23 import androidx.fragment.app.FragmentManager;
24 import androidx.fragment.app.ListFragment;
25 
26 public abstract class CompatListActivity extends AppCompatActivity {
27 
28     @Override
onCreate(Bundle savedInstanceState)29     protected void onCreate(Bundle savedInstanceState) {
30         super.onCreate(savedInstanceState);
31         initializeActivity();
32 
33         int containerViewId = getListFragmentContainerViewId();
34         FragmentManager fm = getSupportFragmentManager();
35         Fragment fragment = fm.findFragmentById(containerViewId);
36         if (fragment == null) {
37             ListFragment listFragment = createListFragment();
38             listFragment.setListAdapter(createListAdapter());
39             fm.beginTransaction().add(containerViewId, listFragment).commit();
40         } else if (fragment instanceof ListFragment) {
41             ((ListFragment) fragment).setListAdapter(createListAdapter());
42         }
43     }
44 
createListAdapter()45     protected abstract ListAdapter createListAdapter();
46 
createListFragment()47     protected ListFragment createListFragment() {
48         return new ListFragment();
49     }
50 
getListFragmentContainerViewId()51     protected int getListFragmentContainerViewId() {
52         return android.R.id.content;
53     }
54 
initializeActivity()55     protected void initializeActivity() {
56     }
57 }
58