android listview的创建及行删除操作
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() { @Overridepublic 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(){@Overridepublic 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@Overridepublic 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 ?