samples/Support7Demos/src/com/example/android/supportv7/widget/ListViewActivity.java

/*
 * 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.example.android.supportv7.widget;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.example.android.supportv7.R;

/**
 * Sample activity for the demo of list item styles.
 */
public class ListViewActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.list_view_activity);
        ListView listView = findViewById(R.id.list_view);
        listView.setAdapter(new BaseAdapter() {
            @Override
            public int getCount() {
                return 100;
            }

            @Override
            public Object getItem(int i) {
                return null;
            }

            @Override
            public long getItemId(int i) {
                return i;
            }

            @Override
            public View getView(int i, View view, ViewGroup viewGroup) {
                // this is just a demo, so not using view holders
                if (view == null) {
                    view = LayoutInflater.from(viewGroup.getContext()).inflate(
                            R.layout.list_view_item, viewGroup, false);
                }
                TextView title = (TextView) view.findViewById(R.id.title);
                TextView subtitle = (TextView) view.findViewById(R.id.subtitle);
                title.setText("Title for #" + i);
                subtitle.setText("Subtitle for #" + i);
                return view;
            }
        });
    }
}