Combination of Android's ListView and Simpleadapter

The Simpleadapter is a simple adapter. The prepared data can be displayed in the ListView. More information can be found in the official Android API Development documentation.

Example Description: Content in Simpleadapterlistviewactivity.java:

package com.zzh.day_listview;import java.util.arraylist;import java.util.hashmap;import  Java.util.list;import java.util.map;import android.app.activity;import android.os.bundle;import  android.view.View;import android.widget.AdapterView;import  android.widget.adapterview.onitemclicklistener;import android.widget.listview;import  The use of Android.widget.simpleadapter;import android.widget.toast;/**simpleadapter in the ListView  * @ Author administrator * */public class simpleadapterlistviewactivity extends  Activity{SimpleAdapter adapter; listview lv; list<map<string, object>> data = new arraylist<map<string,  Object>> ();//The data to be displayed map<string, object> map;//@Overrideprotected  void oncreate ( Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (R.layout.simple_listview); LV  =  (LiStview)  findviewbyid (r.id.listview1);//  Initialize data for  (int i = 1; i <  21; i++) {map = new hashmap<string, object> (); Map.put ("Key1", i  +  " <--key1"), Map.put ("Key2",  i+ " <--key2");d ata.add (map);} /* * simpleadapter the meaning of the parameters in the construction method: *  parameter one: To display the activity *  parameter two: The data to be displayed. This data must be of type list<? extends map<string, ?>> , and the keys in the Map must be of type String.  *  parameter three: a custom layout file. Two textview are defined because I only put two map objects when initializing the data.  *  parameter four: is a string type of array, which is placed in the parameter two in the map  key array, and must be, this also shows that the key in the map must be a string type of reason  *  Parameter five: An array of type int that holds the ID of the location (View) where the value stored in the map in parameter two is placed.  *  Here you can see a map collection as an item in a ListView, a row of data, and a key that represents the data that each view,value is to display.  * */adapter = new simpleadapter (This, data, r.layout.simple_listview_item, new string[] {"Key1", "Key2"}, new int[] { r.id.textview1, r.id.textview2&nbSP;}); Lv.setadapter (adapter);//Display data in the ListView Lv.setonitemclicklistener (New onitemclicklistener ()// Register Event {@Overridepublic  void onitemclick (Adapterview<?> parent, view view) to the ListView , Int position, long id) {Toast.maketext (Getapplicationcontext (),  "clicked" +position+ ",  Toast.length_long). Show ();}});}}

Content in Simple_listview.xml:

<?xml version= "1.0" encoding= "Utf-8"? ><relativelayout xmlns:android= "http://schemas.android.com/apk/res/ Android "Android:layout_width=" Match_parent "android:layout_height=" match_parent "android:orientation=" vertical " > <listview android:id= "@+id/listview1" android:layout_width= "Match_parent" Android:layout_h eight= "Wrap_content" android:layout_alignparenttop= "true" android:layout_centerhorizontal= "true" > < ;/listview></relativelayout>

Content in Simple_listview_item.xml:

<?xml version= "1.0"  encoding= "Utf-8"? ><relativelayout xmlns:android= "http// Schemas.android.com/apk/res/android "    android:layout_width=" Match_parent "     android:layout_height= "match_parent"     android:orientation= "vertical"   >    <textview        android:id= "@+id/ TextView1 "        android:layout_width=" Wrap_content "         android:layout_height= "Wrap_content"          android:layout_alignparentleft= "true"         android: Layout_alignparenttop= "true"         android:textsize= "26SP"/>     <textview        android:id= "@+id/textView2"          android:layout_width= "Wrap_content"         android:layout_height= " Wrap_content "        android:layout_alignparentright=" true "         android:layout_alignparenttop= "true"          android:textsize= "26SP"         android:textcolor= "@ Android:color/holo_blue_light " /></RelativeLayout>

Operating effect:

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Combination of Android's ListView and Simpleadapter