- /**
- * @author xianglong guo 2012-05-17 22:15
- * 知识点1:ListView item:两种长按弹出菜单方式
- * 知识点2:ListView SimpleAdapter的使用
- * 知识点 3:在java代码中创建一个ListView
- */
- -----------------------------------------------------
- Activity
- ?
- 代码片段,双击复制
- packageorg.gxl.com;
- publicclass ListOnLongClickActivity extendsActivity {
- privateLinearLayout myListViewlayout;
- privateListView mListView;
- SimpleAdapter adapter;
- publicint MID;
- // 创建一个List对象,用来存放列表项的每一行map信息
- List<Map<String, Object>> list = newArrayList<Map<String, Object>>();
- @Override
- publicvoid onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- myListViewlayout = (LinearLayout) findViewById(R.id.myListViewlayout);
- mListView = newListView(this);
- // 创建布局参数
- LinearLayout.LayoutParams listviewParams = newLinearLayout.LayoutParams(
- LinearLayout.LayoutParams.FILL_PARENT,
- LinearLayout.LayoutParams.FILL_PARENT);
- // 当滑动列表上,默认显示的黑色
- mListView.setCacheColorHint(Color.WHITE);
- // 将列表添加到流式布局myListViewlayout中
- myListViewlayout.addView(mListView, listviewParams);
- FillListData();
- // 列表现的单机事件
- mListView.setOnItemClickListener(newOnItemClickListener() {
- @Override
- publicvoid onItemClick(AdapterView<?> arg0, View arg1,
- intposition, longid) {
- /*
- * 点击列表项时触发onItemClick方法,四个参数含义分别为
- * arg0:发生单击事件的AdapterView
- * arg1:AdapterView中被点击的View
- * position:当前点击的行在adapter的下标
- * id:当前点击的行的id
- */
- Toast.makeText(ListOnLongClickActivity.this,
- "您选择的是" + list.get(position).get("name").toString(),
- Toast.LENGTH_SHORT).show();
- }
- });
- /**
- * Item 长按方式弹出菜单多选方式1
- * Item 长按方式弹出菜单多选方式2
- * ItemOnLongClick1()与ItemOnLongClick2()不共存,按实际需要选择
- */
- // ItemOnLongClick1();
- ItemOnLongClick2();
- }
- // 填充ListView资源
- privatevoid FillListData() {
- adapter = newSimpleAdapter(ListOnLongClickActivity.this,
- getListData(), R.layout.listviewrow, newString[] { "name",
- "price"}, newint[] { R.id.tv_name, R.id.tv_price });
- mListView.setAdapter(adapter);
- }
- privateList<Map<String, Object>> getListData() {
- Map<String, Object> _map = newHashMap<String, Object>();
- _map.put("name","MOTO ME865");
- _map.put("price","2350元");
- list.add(_map);
- _map = newHashMap<String, Object>();
- _map.put("name","HTC G18");
- _map.put("price","3340元");
- list.add(_map);
- _map = newHashMap<String, Object>();
- _map.put("name","MOTO XT928");
- _map.put("price","5450元");
- list.add(_map);
- _map = newHashMap<String, Object>();
- _map.put("name","iPhone 4S");
- _map.put("price","4650元");
- list.add(_map);
- _map = newHashMap<String, Object>();
- _map.put("name","MOTO ME525");
- _map.put("price","1345元");
- list.add(_map);
- returnlist;
- }
- privatevoid ItemOnLongClick1() {
- //注:setOnCreateContextMenuListener是与下面onContextItemSelected配套使用的
- mListView
- .setOnCreateContextMenuListener(newOnCreateContextMenuListener() {
- publicvoid onCreateContextMenu(ContextMenu menu, View v,
- ContextMenuInfo menuInfo) {
- menu.add(0,0,0,"添加");
- menu.add(0,1,0,"删除");
- menu.add(0,2,0,"删除ALL");
- }
- });
- }
- // 长按菜单响应函数
- publicboolean onContextItemSelected(MenuItem item) {
- AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item
- .getMenuInfo();
- MID = (int) info.id;// 这里的info.id对应的就是数据库中_id的值
- switch(item.getItemId()) {
- case0:
- // 添加操作
- Toast.makeText(ListOnLongClickActivity.this,
- "添加",
- Toast.LENGTH_SHORT).show();
- break;
- case1:
- // 删除操作
- break;
- case2:
- // 删除ALL操作
- break;
- default:
- break;
- }
- returnsuper.onContextItemSelected(item);
- }
- privatevoid ItemOnLongClick2() {
- mListView.setOnItemLongClickListener(newOnItemLongClickListener() {
- @Override
- publicboolean onItemLongClick(AdapterView<?> arg0, View arg1,
- finalint arg2, longarg3) {
- list.remove(arg2);
- newAlertDialog.Builder(ListOnLongClickActivity.this)
- .setTitle("对Item进行操作")
- .setItems(R.array.arrcontent,
- newDialogInterface.OnClickListener() {
- publicvoid onClick(DialogInterface dialog,
- intwhich) {
- String[] PK = getResources()
- .getStringArray(
- R.array.arrcontent);
- Toast.makeText(
- ListOnLongClickActivity.this,
- PK[which], Toast.LENGTH_LONG)
- .show();
- if(PK[which].equals("删除")) {
- // 按照这种方式做删除操作,这个if内的代码有bug,实际代码中按需操作
- list.remove(arg2);
- adapter = (SimpleAdapter) mListView
- .getAdapter();
- if(!adapter.isEmpty()) {
- adapter.notifyDataSetChanged();// 实现数据的实时刷新
- }
- }
- }
- })
- .setNegativeButton("取消",
- newDialogInterface.OnClickListener() {
- publicvoid onClick(DialogInterface dialog,
- intwhich) {
- // TODO Auto-generated method stub
- }
- }).show();
- returntrue;
- }
- });
- }
- }
- //该片段来自于http://www.codesnippet.cn/detail/0302201511708.html
来源: http://www.codesnippet.cn/detail/0302201511708.html