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.recyclerview;
17 
18 import android.content.Context;
19 import android.os.Bundle;
20 import androidx.annotation.Nullable;
21 import androidx.fragment.app.Fragment;
22 import androidx.fragment.app.FragmentManager;
23 import androidx.appcompat.app.AppCompatActivity;
24 import androidx.recyclerview.widget.LinearLayoutManager;
25 import androidx.recyclerview.widget.RecyclerView;
26 import android.view.LayoutInflater;
27 import android.view.View;
28 import android.view.ViewGroup;
29 
30 import com.android.test.uibench.R;
31 
32 public abstract class RvCompatListActivity extends AppCompatActivity {
33     public static class RecyclerViewFragment extends Fragment {
34         RecyclerView.LayoutManager layoutManager;
35         RecyclerView.Adapter adapter;
36 
37         @Nullable
38         @Override
onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)39         public View onCreateView(LayoutInflater inflater, ViewGroup container,
40                 Bundle savedInstanceState) {
41             RecyclerView recyclerView = (RecyclerView) inflater.inflate(
42                     R.layout.recycler_view, container, false);
43             recyclerView.setLayoutManager(layoutManager);
44             recyclerView.setAdapter(adapter);
45             return recyclerView;
46         }
47     }
48 
49     @Override
onCreate(Bundle savedInstanceState)50     protected void onCreate(Bundle savedInstanceState) {
51         super.onCreate(savedInstanceState);
52 
53         FragmentManager fm = getSupportFragmentManager();
54         if (fm.findFragmentById(android.R.id.content) == null) {
55             RecyclerViewFragment fragment = new RecyclerViewFragment();
56             fragment.layoutManager = createLayoutManager(this);
57             fragment.adapter = createAdapter();
58             fm.beginTransaction().add(android.R.id.content, fragment).commit();
59         }
60     }
61 
createLayoutManager(Context context)62     protected RecyclerView.LayoutManager createLayoutManager(Context context) {
63         return new LinearLayoutManager(context);
64     }
65 
createAdapter()66     protected abstract RecyclerView.Adapter createAdapter();
67 }
68