Android listview

标签：android   listview   下拉刷新   图片显示   

	list = (ListView) findViewById(R.id.all_teacher_list);

		// 生成动态数组，加入数据
		ArrayList<HashMap<String, Object>> listItem = new ArrayList<HashMap<String, Object>>();
		for (int i = 0; i < 20; i++) {
			HashMap<String, Object> map = new HashMap<String, Object>();
			// map.put("ItemImage", R.drawable.checked);//图像资源的ID
			map.put("teachername", "幼儿园按照时间可以分为宿制幼儿园");
			map.put("teacherdetail", "这是一片关于幼儿知识的文章，特点是简单易读，很实用");
			map.put("image", R.drawable.blue);
			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.all_child_edu_item,// ListItem的XML实现
				// 动态数组与ImageItem对应的子项
				new String[] { "teachername", "teacherdetail", "image" },
				// ImageItem的XML文件里面的一个ImageView,两个TextView ID
				new int[] { R.id.all_child_edu_name, R.id.all_child_edu_detail,
						R.id.all_child_edu_image });

		// 添加并且显示
		list.setAdapter(listItemAdapter);

如果需要将网络或文件中的图片放到listview中，需要先将图片转换为bitmap格式，然后重写setViewBinder()方法

annolistItemAdapter.setViewBinder(new ViewBinder() {
			public boolean setViewValue(View view, Object data,
					String textRepresentation) {
				// 判断是否为我们要处理的对象
				if (view instanceof ImageView && data instanceof Bitmap) {
					ImageView iv = (ImageView) view;
					iv.setImageBitmap((Bitmap) data);
					return true;
				} else
					return false;
			}
		});

list.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
					long arg3) {
				// TODO Auto-generated method stub
				//点击第arg2个item的监听事件

			}
		});

list.setOnScrollListener(new OnScrollListener() {

			@Override
			public void onScrollStateChanged(AbsListView view, int scrollState) {
				// TODO Auto-generated method stub
				if (last == count
						&& scrollState == this.SCROLL_STATE_IDLE) {
					updatevideo();
					// Toast.makeText(AllSchoolNewsActivity.this, "下拉刷新",
					// Toast.LENGTH_LONG).show();

				}
			}

			@Override
			public void onScroll(AbsListView view, int firstVisibleItem,
					int visibleItemCount, int totalItemCount) {
				// TODO Auto-generated method stub
				last = firstVisibleItem + visibleItemCount; // 减1是因为上面加了个addFooterView
			}
		});

Android listview

标签：android   listview   下拉刷新   图片显示   

原文地址：http://blog.csdn.net/steveyg/article/details/47085381