ListView列表的简单案例

在android开发中ListView它以列表的形式展示具体内容，并且能够根据数据的长度自适应显示。抽空把对ListView的使用做了整理，并写了个小例子

列表示例图：

BaseActivity

package com.shaoxin.mylistactivity;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;

/**
 * Created by shaoxin on 2016/11/21.
 */

public abstract class BaseActivity extends AppCompatActivity {
    public abstract void init();

    public abstract void setListener();

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        init();
        setListener();
    }
}

MainActivity

package com.shaoxin.mylistactivity;

import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class MainActivity extends BaseActivity {
    private ListView list1;
    private ArrayAdapter arrayAdapter;
    private String[] strName = {"南昌", "上海", "北京"};
    private ListView list2;
    private SimpleAdapter simpleAdapter;
    private String[] strWeither = {"晴天", "下雨", "刮风"};
    private List<Map<String, String>> list;
    private MyAdapter myAdapter;
    private ListView list3;

    @Override
    public void init() {
        setContentView(R.layout.activity_main);
        list1 = (ListView) findViewById(R.id.list_1);
        list2 = (ListView) findViewById(R.id.list_2);
        list3 = (ListView) findViewById(R.id.list_3);
    }

    @Override
    public void setListener() {
        arrayAdapter = new ArrayAdapter(MainActivity.this, android.R.layout.simple_list_item_1, strName);
        list1.setAdapter(arrayAdapter);

        list = new ArrayList<>();
        for (int i = 0; i < strName.length; i++) {
            Map map = new HashMap();
            map.put("txt1", strName[i]);
            map.put("txt2", strWeither[i]);
            list.add(map);
        }
        simpleAdapter = new SimpleAdapter(MainActivity.this, list, android.R.layout.simple_list_item_2, new String[]{"txt1", "txt2"}, new int[]{android.R.id.text1, android.R.id.text2});
        list2.setAdapter(simpleAdapter);

        myAdapter = new MyAdapter();
        list3.setAdapter(myAdapter);

    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    public class MyAdapter extends BaseAdapter {

        @Override
        public int getCount() {
            return strName.length;
        }

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

        @Override
        public long getItemId(int position) {
            return 0;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            convertView = View.inflate(MainActivity.this, android.R.layout.simple_list_item_2, null);
            TextView text1 = (TextView) convertView.findViewById(android.R.id.text1);
            TextView text2 = (TextView) convertView.findViewById(android.R.id.text2);
            text1.setText(strName[position]);
            text2.setText(strWeither[position]);
            return convertView;
        }
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.shaoxin.mylistactivity.MainActivity">

    <ListView
        android:id="@+id/list_3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:divider="#ff0000"
        android:dividerHeight="1dp" />

    <ListView
        android:id="@+id/list_1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:divider="#ff0000"
        android:dividerHeight="1dp" />

    <ListView
        android:id="@+id/list_2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:divider="#ff0000"
        android:dividerHeight="1dp" />

</LinearLayout>