Android ListView

在android开发中ListView是比较常用的组件，它以列表的形式展示具体内容，并且能够根据数据的长度自适应显示。

基本内容

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packagecom.ray.test;
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importjava.util.ArrayList;
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importjava.util.HashMap;
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importandroid.app.Activity;
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importandroid.os.Bundle;
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importandroid.view.ContextMenu;
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importandroid.view.MenuItem;
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importandroid.view.View;
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importandroid.view.ContextMenu.ContextMenuInfo;
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importandroid.view.View.OnCreateContextMenuListener;
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importandroid.widget.AdapterView;
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importandroid.widget.ListView;
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importandroid.widget.SimpleAdapter;
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importandroid.widget.AdapterView.OnItemClickListener;
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publicclassTestListViewextendsActivity{
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@Override
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publicvoidonCreate(BundlesavedInstanceState){
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super.onCreate(savedInstanceState);
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setContentView(R.layout.main);
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//绑定Layout里面的ListView
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ListViewlist=(ListView)findViewById(R.id.ListView01);
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//生成动态数组，加入数据
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ArrayList<HashMap<String,Object>>listItem=newArrayList<HashMap<String,Object>>();
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for(inti=0;i<10;i++)
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{
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HashMap<String,Object>map=newHashMap<String,Object>();
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map.put("ItemImage",R.drawable.checked);//图像资源的ID
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map.put("ItemTitle","Level"+i);
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map.put("ItemText","Finishedin1Min54Secs,70Moves!");
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listItem.add(map);
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}
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//生成适配器的Item和动态数组对应的元素
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SimpleAdapterlistItemAdapter=newSimpleAdapter(this,listItem,//数据源
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R.layout.list_items,//ListItem的XML实现
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//动态数组与ImageItem对应的子项
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newString[]{"ItemImage","ItemTitle","ItemText"},
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//ImageItem的XML文件里面的一个ImageView,两个TextViewID
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newint[]{R.id.ItemImage,R.id.ItemTitle,R.id.ItemText}
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);
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//添加并且显示
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list.setAdapter(listItemAdapter);
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//添加点击
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list.setOnItemClickListener(newOnItemClickListener(){
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@Override
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publicvoidonItemClick(AdapterView<?>arg0,Viewarg1,intarg2,
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longarg3){
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setTitle("点击第"+arg2+"个项目");
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}
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});
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//添加长按点击
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list.setOnCreateContextMenuListener(newOnCreateContextMenuListener(){
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@Override
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publicvoidonCreateContextMenu(ContextMenumenu,Viewv,ContextMenuInfomenuInfo){
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menu.setHeaderTitle("长按菜单-ContextMenu");
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menu.add(0,0,0,"弹出长按菜单0");
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menu.add(0,1,0,"弹出长按菜单1");
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}
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});
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}
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//长按菜单响应函数
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@Override
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publicbooleanonContextItemSelected(MenuItemitem){
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setTitle("点击了长按菜单里面的第"+item.getItemId()+"个项目");
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returnsuper.onContextItemSelected(item);
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}
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}