Simple use of the ListView for Android Learning notes

(1)

<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= "wrap_content"        android:layout_alignparentleft= "true"        android:layout_ Alignparenttop= "true" >    </ListView></RelativeLayout>

(2)

Package Com.example.listview1;import Java.util.arraylist;import java.util.list;import android. R.anim;import android.os.bundle;import android.app.activity;import Android.view.menu;import Android.view.View; Import Android.widget.adapterview;import Android.widget.adapterview.onitemclicklistener;import Android.widget.arrayadapter;import Android.widget.listadapter;import Android.widget.listview;import Android.widget.toast;public class Mainactivity extends Activity {private ListView listview1;private arrayadapter< String> arrayadapter; @Overrideprotected void OnCreate (Bundle savedinstancestate) {super.oncreate ( Savedinstancestate); Setcontentview (r.layout.activity_main); listView1 = (ListView) This.findviewbyid ( R.ID.LISTVIEW1)///Set optional, can also be set to Radio Choice_mode_single, the bottom of simple should also correspond to Listview1.setchoicemode (Listview.choice_mode_ multiple)///Set listView1 check mode, corresponding to Simple_list_item_multiple_choice below arrayadapter = new Arrayadapter<string> ( Mainactivity.this,android. R.layout.simple_list_item_multiple_choice,getdatasource ()); Listview1.setadapter (arrayadapter);/* * LISTVIEW1 Click events */ Listview1.setonitemclicklistener (New Onitemclicklistener () {@Overridepublic void Onitemclick (adapterview<?> Parent, View view,int position, long id) {Toast.maketext (mainactivity.this, "-->>" + arrayadapter.getitem ( Position), Toast.length_short). Show ();}}); Public list<string> Getdatasource () {list<string> List = new arraylist<string> (), for (int i = 0; i < 30; i++) {List.add ("Jack" + i);} return list;} @Overridepublic boolean Oncreateoptionsmenu (Menu menu) {getmenuinflater (). Inflate (R.menu.main, menu); return true;}}

Simple use of the ListView for Android Learning notes