Android Learning note contextualmenu context menu for long-press event determination

Source: Internet
Author: User

(1) Create a ListView in the layout file:

<relativelayout xmlns:android= "http://schemas.android.com/apk/res/android"    xmlns:tools= "http// Schemas.android.com/tools "    android:layout_width=" match_parent "    android:layout_height=" Match_parent "    android:paddingbottom= "@dimen/activity_vertical_margin"    android:paddingleft= "@dimen/activity_ Horizontal_margin "    android:paddingright=" @dimen/activity_horizontal_margin "    android:paddingtop=" @dimen /activity_vertical_margin "    tools:context=". Mainactivity ">    <listview        android:id=" @+id/listview1 "        android:layout_width=" Match_parent "        android:layout_height= "match_parent"        android:layout_alignparentleft= "true"        android:layout_ Alignparenttop= "true" >    </ListView></RelativeLayout>

(1) The Main.xml file in the Res--menu directory:

<menu xmlns:android= "Http://schemas.android.com/apk/res/android" >    <item        android:id= "@+id/edit"        android:orderincategory= "android:showasaction="        never "        android:title=" @string/edit "/>    <item        android:id= "@+id/share"        android:orderincategory= "        " android:showasaction= "Never" android:title= "@string/share"/>    <item        android:id= "@+id/delete" android:orderincategory= "        "        android:showasaction=" never "        android:title=" @string/delete "/></menu>

(3) String.xml file:

<menu xmlns:android= "Http://schemas.android.com/apk/res/android" >    <item        android:id= "@+id/edit"        android:orderincategory= "android:showasaction="        never "        android:title=" @string/edit "/>    <item        android:id= "@+id/share"        android:orderincategory= "        " android:showasaction= "Never" android:title= "@string/share"/>    <item        android:id= "@+id/delete" android:orderincategory= "        "        android:showasaction=" never "        android:title=" @string/delete "/></menu>

(4) class file:

Package Com.example.menu_contextualmenu;import Java.util.arraylist;import Java.util.list;import android.os.Bundle; Import Android.app.activity;import android.view.contextmenu;import android.view.menu;import Android.view.MenuItem; Import Android.view.view;import Android.view.contextmenu.contextmenuinfo;import android.widget.ArrayAdapter; Import Android.widget.listview;import Android.widget.adapterview.adaptercontextmenuinfo;import android.widget.toast;/** * Context menu applies to ListView or GridView and must be long pressed to display * * @author Piaodangdehun * */public class Mainactiv ity extends Activity {private ListView listview;private arrayadapter<string> arrayadapter; The adapter is used to add data to the ListView @overrideprotected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (r.layout.activity_main); listview = (ListView) This.findviewbyid (r.id.listview1); arrayadapter = new Arrayadapter<string> (this,android. R.layout.simple_expandable_list_item_1, GetData ()); Listview.setadapter (ArrayadaPter);//Register a Contextualmenu context menu Registerforcontextmenu (ListView);} /* * Add a context menu */@Overridepublic void Oncreatecontextmenu (ContextMenu menu, View v,contextmenuinfo menuinfo) {//TODO Auto -generated method Stubgetmenuinflater (). Inflate (R.menu.main, menu); Super.oncreatecontextmenu (menu, V, menuinfo);} /* * Add a value to the adapter */public list<string> getData () {list<string> List = new arraylist<string> (); for (int i = 0; I < 10; i++) {List.add ("Jack" + i);} return list;} /* * Context Menu Settings */@Overridepublic boolean oncontextitemselected (MenuItem Item) {//TODO auto-generated method Stubadapterco Ntextmenuinfo info = (adaptercontextmenuinfo) item.getmenuinfo (); switch (Item.getitemid ()) {case r.id.edit:string Value = Arrayadapter.getitem (info.position); Toast.maketext (Mainactivity.this, "edit ...." + Value,toast.length_short). Show (); Break;case R.id.delete: Toast.maketext (mainactivity.this, "Delete ....", Toast.length_short). Show (); break;default:break;} return super.oncontextitemselected (item);} /* * This is the system comes with the menu, commented out and then click on the menu will not display the system's menus * * @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; } */}


You must long press the option to pop up the dialog box for action

Android Learning note contextualmenu context menu for long-press event determination

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