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public class mainactivity extends activity { private listview listview; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); listview = (listview) this.findviewbyid(r.id.listview); arrayadapter<string> adapter = new arrayadapter<string>(this, android.r.layout.simple_expandable_list_item_1, getdata()); listview.setadapter(adapter); // 给listview注册上下文菜单 registerforcontextmenu(listview); } public list<string> getdata() { list<string> list = new arraylist<string>(); for (int i = 0; i < 7; i++) { list.add("thomas " + i); } return list; } @override public boolean oncreateoptionsmenu(menu menu) { // inflate the menu; this adds items to the action bar if it is present. getmenuinflater().inflate(r.menu.main, menu); return true; } @override public void oncreatecontextmenu(contextmenu menu, view v, contextmenuinfo menuinfo) { // todo auto-generated method stub super.oncreatecontextmenu(menu, v, menuinfo); menuinflater inflater = getmenuinflater(); inflater.inflate(r.menu.main, menu); } // 上下文菜单被选择 @override public boolean oncontextitemselected(menuitem item) { // todo auto-generated method stub switch (item.getitemid()) { case r.id.action_add: toast.maketext(this, "添加被点击", 1).show(); break; case r.id.action_delete: toast.maketext(this, "删除被点击", 1).show(); break; default: break; } return super.oncontextitemselected(item); } }
<menu xmlns:android="http://schemas.android.com/apk/res/android" > <item android:id="@+id/action_add" android:orderincategory="100" android:showasaction="never" android:title="添加"> </item> <item android:id="@+id/action_delete" android:orderincategory="100" android:showasaction="never" android:title="删除"> </item> </menu>
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