是不是安裝完成后沒有啟動Wamp服務？您說的課程的收藏嗎

R文件沒了，clean一下就好了，工具欄project，有個clean，選擇選中的項目clean

package com.example.shipeiqi;

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.util.Log;

import android.view.Menu;

import android.view.View;

import android.widget.AbsListView;

import android.widget.AbsListView.OnScrollListener;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.ArrayAdapter;

import android.widget.ListView;

import android.widget.SimpleAdapter;

import android.widget.Toast;

public class MainActivity extends Activity implements OnItemClickListener,OnScrollListener{

ListView listview;

ArrayAdapter<String> arr_adapter;

SimpleAdapter simp_leAdapter;

List<Map<String,Object>>dataList;

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

listview=(ListView) this.findViewById(R.id.listView1);

//1.新建一個數據適配器

//ArrayAdapter(上下文，當前ListView加載的每一個列表項所對應的布局文件，數據源)

? //2.適配器加載數據源

/*

* context:上下文，

* data：數據源 一個map所組成的List集合

* ? ? ?每一個Map都會去對應Listview列表中的一行。

*/

String []arr_adap={"慕課網1","慕課網2","慕課網3","慕課網4"};

dataList=new ArrayList<Map<String,Object>>();

arr_adapter=new ArrayAdapter<String>(this, android.R.layout.simple_expandable_list_item_1, arr_adap );

? //3.視圖（listview）加載適配器

simp_leAdapter=new SimpleAdapter(this, getdata(), R.layout.activity_atap_adapter, new String []{"pic","text"}, new int []{R.id.imageView1,R.id.textView1});

//listview.setAdapter(arr_adapter);

listview.setAdapter(simp_leAdapter);

listview.setOnItemClickListener(this);

? ? ? ? listview.setOnScrollListener(this);

}

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

for(int i=0;i<20;i++){

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

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

map.put("text", "慕課網"+i);

dataList.add(map);

}

return dataList;

}

@Override

public void onScroll(AbsListView arg0, int arg1, int arg2, int arg3) {

// TODO Auto-generated method stub

switch(arg1){

case SCROLL_STATE_FLING:

Log.i("Main","用戶在手指離開屏幕之前，由于用力滑了一下，視圖還會");

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

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

? ? ? ?map.put("txet", "再加一項");

? ? ? ?dataList.add(map);

? ? ? ?simp_leAdapter.notifyDataSetInvalidated();

? ? ? ?break;

case SCROLL_STATE_IDLE:

break;

case SCROLL_STATE_TOUCH_SCROLL:

break;

}

}

@Override

public void onScrollStateChanged(AbsListView arg0, int arg1) {

// TODO Auto-generated method stub

}

@Override

public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {

// TODO Auto-generated method stub

String text=listview.getItemAtPosition(arg2)+""; ?

Toast.makeText(this, "arg2="+arg2+"text="+text, Toast.LENGTH_LONG).show();

}

}