ListView用法详解

@Override
        //定义ListView的数据的长度，必须修改此项否则，默认为0，不生成任何列表项
	public int getCount() {
		// TODO Auto-generated method stub
		return personList.size();
	}
        //获得适配器中指定位置的列表项。
	@Override
	public Object getItem(int arg0) {
		// TODO Auto-generated method stub
		return null;
	}
        //得到与列表中指定位置相关的行ID
	@Override
	public long getItemId(int arg0) {
		// TODO Auto-generated method stub
		return 0;
	}

        /**
         * 此方法返回的是ListView的列表中某一行的View对象
	 * position 当前返回的view的索引位置
	 * convertView 缓存对象
	 * parent 就是ListView对象
	 */
	@Override
	public View getView(int arg0, View arg1, ViewGroup arg2) {
                        View view = null;
			
			if(convertView == null) {
				// 布局填充器对象, 用于把xml布局转换成view对象
				LayoutInflater inflater = MainActivity2.this.getLayoutInflater();
				view = inflater.inflate(R.layout.listview_item, null);
				Log.i(TAG, "getView: 新建" + position);
			} else {
				view = convertView;
				Log.i(TAG, "getView: 复用缓存" + position);
			}
			
			// 给view中的姓名和年龄赋值
			TextView tvName = (TextView) view.findViewById(R.id.tv_listview_item_name);
			TextView tvAge = (TextView) view.findViewById(R.id.tv_listview_item_age);
			
			Person person = personList.get(position);
			
			tvName.setText("姓名: " + person.getName());
			tvAge.setText("年龄: " + person.getAge());
			return view;
	}                    

List<Map<String, Object>> data = new ArrayList<Map<String,Object>>();
		
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("name", "张三1");
		map.put("icon", R.drawable.f007);
		data.add(map);
		
		map = new HashMap<String, Object>();
		map.put("name", "张三2");
		map.put("icon", R.drawable.f007);
		data.add(map);

		map = new HashMap<String, Object>();
		map.put("name", "张三3");
		map.put("icon", R.drawable.f007);
		data.add(map);

		map = new HashMap<String, Object>();
		map.put("name", "张三4");
		map.put("icon", R.drawable.f007);
		data.add(map);

		map = new HashMap<String, Object>();
		map.put("name", "张三5");
		map.put("icon", R.drawable.f007);
		data.add(map);

SimpleAdapter adapter = new SimpleAdapter(
				this, // 上下文
				data, // listView绑定的数据
				R.layout.listview_item, // listview的子条目的布局的id
				new String[]{"name", "icon"}, 	// data数据中的map集合里的key
				new int[]{R.id.tv_name, R.id.iv_icon}); // resource 中的id
		
		mListView.setAdapter(adapter);

               String[] textArray = {"功能1","功能2","功能3","功能4","功能5","功能6","功能7","功能8"};
                 /*
		 * 定义数据适配器
		 * android.R.layout.simple_list_item_1  Listview的子条目显示的布局的id
		 * textArray 显示在ListView列表中的数据
		 */
		ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, 
				android.R.layout.simple_list_item_1, 
				textArray);
		
		mListView.setAdapter(adapter);