package com.lidaochen.test;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.widget.ListView;import android.widget.SimpleAdapter;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // 找到ListView控件 ListView listView = (ListView)findViewById(R.id.lv); // 准备ListView要显示的数据 List