android listview的创设及行删除操作

 android listview的创建及行删除操作2011-03-16 12:02 3102人阅读 评论(0) 收藏 举报 Step1:创建listview   ListView list = (ListView) findViewById(R.id.ListView01);  list.setBackgroundColor(Color.WHITE);//设置背景颜色   list.setCacheColorHint(Color.WHITE);         //生成动态数组，加入数据        listItem = new ArrayList<HashMap<String, Object>>();        map = new HashMap<String, Object>();        for(int i=0;i<10;i++)        {         	HashMap<String, Object>   map = new HashMap<String, Object>();	        	       map.put("ItemImage", R.drawable.checked);//图像资源的ID 把图标放到工程的相应木来下          	map.put("ItemTitle", "Level ");        	 	map.put("ItemText", "Finished in 1 Min 54 Secs, 70 Moves!");                listItem.add(map);        }        //生成适配器的Item和动态数组对应的元素        SimpleAdapter listItemAdapter = new SimpleAdapter(this,listItem,//数据源             R.layout.list_items,//ListItem的XML实现            //动态数组与ImageItem对应的子项                    new String[] {"ItemImage","ItemTitle", "ItemText"},             //ImageItem的XML文件里面的一个ImageView,两个TextView ID            new int[] {R.id.ItemImage,R.id.ItemTitle,R.id.ItemText}        );        //添加并且显示        list.setAdapter(listItemAdapter);         //添加点击        list.setOnItemClickListener(new OnItemClickListener()      { 		@Override		public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) 		{			String item = (String)listItem.get(arg2).get("ItemTitle");			setTitle("点击第"+item);		}	});       //添加长按点击        list.setOnCreateContextMenuListener(new OnCreateContextMenuListener()	{		@Override		public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo)		{			menu.setHeaderTitle("长按菜单-ContextMenu");   			menu.add(0, 0, 0, "删除审批单");			menu.add(0, 1, 0, "取消删除");   	}	}); 	//长按菜单响应函数	@Override	public boolean onContextItemSelected(MenuItem item)	{		setTitle("点击了长按菜单里面的第"+item.getItemId()+"个项目"); 		int selectedPosition = ((AdapterContextMenuInfo) item.getMenuInfo()).position;//获取点击了第几行		return super.onContextItemSelected(item);	} 删除操作listItem.remove(position);//选择行的位置listItemAdapter.notifyDataSetChanged();list.invalidate();listview会删除选择的行，重新更新