package com.example.demo_listview;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import android.os.Bundle;

import android.app.Activity;

import android.view.Menu;

import android.widget.ArrayAdapter;

import android.widget.ListView;

import android.widget.SimpleAdapter;

public class MainActivity extends Activity {

private ListView listView;

//private ArrayAdapter<String> arr_adapter;

private SimpleAdapter sim_adapter;

private List<Map<String, Object>> datalist;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        listView=(ListView) findViewById(R.id.listView);

        datalist=new ArrayList<Map<String,Object>>();//实例化数据源

        sim_adapter=new SimpleAdapter(this, getData(),R.layout.sim_item, new String[]{"pic","text"}, new int[]{R.id.imageview,R.id.textview});

        //String[] arr_data={"慕课1","慕课2","慕课3","慕课4"};

        //arr_adapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, arr_data);

        //listView.setAdapter(arr_adapter);

        listView.setAdapter(sim_adapter);

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.main, menu);

        return true;

    }

    private List<Map<String, Object>> getData(){

    for(int i=20;i<20;i++)

    {

    Map<String, Object> map=new HashMap<String,Object>();

    map.put("pic", R.drawable.ic_launcher);

    map.put("text", "imooc"+i);

    datalist.add(map);

    }

    return datalist;

    }

}