Android ListView两种长按弹出菜单方式

/** * @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; } }); } } ----------- listviewrow.xml ? 代码片段，双击复制 <?xml version="1.0"encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@drawable/listviewbg" android:orientation="vertical"> <TextView android:id="@+id/tv_name" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textColor="@android:color/black"/> <TextView android:id="@+id/tv_price" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textColor="@android:color/black"/> </LinearLayout> ----------------- 有图有真相： 工程代码：  该贴已经同步到 qiannuo0317的微博

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