Android Learning Note--listview

The function of the project is to implement a table displayed in an activity

The following code is the code in Mainactivity.java

 PackageCom.example.listview;Importjava.util.ArrayList;ImportJava.util.HashMap;Importandroid.app.ListActivity;ImportAndroid.os.Bundle;ImportAndroid.view.Menu;ImportAndroid.view.MenuItem;ImportAndroid.widget.SimpleAdapter; Public classMainactivityextendslistactivity {@Override Public voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);                        Setcontentview (R.layout.activity_main); ArrayListNewArraylist(); HashMap<string, string> map1 =NewHashmap<string,string>(); HashMap<string, string> map2 =NewHashmap<string,string>(); HashMap<string, string> map3 =NewHashmap<string,string>(); Map1.put ("User_name", "Zhangsan"); Map1.put ("User_ip", "192.168.0.1"); Map2.put ("User_name", "Lisi"); Map2.put ("User_ip", "192.168.0.2"); Map3.put ("User_name", "Wangwu"); Map3.put ("User_ip", "192.168.0.3");        List.add (MAP1);        List.add (MAP2);                List.add (MAP3); Simpleadapter ListAdapter=NewSimpleadapter ( This, List, R.layout.activity_user,NewString[] {"user_name", "USER_IP"},                New int[] {r.id.user_name, r.id.user_ip});    Setlistadapter (ListAdapter); }}

The following code is the code in Activity_main.xml

<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:id= "@+id/linearlayout1"Android:layout_width= "Fill_parent"Android:layout_height= "Fill_parent"android:orientation= "Vertical"Tools:context= "${relativepackage}.${activityclass}" > <LinearLayout Android:id= "@+id/listlinearlayout"android:orientation= "Vertical"Android:layout_width= "Fill_parent"Android:layout_height= "Wrap_content" > <ListView Android:id= "@id/android:list"Android:scrollbars= "Vertical"Android:layout_width= "Fill_parent"Android:layout_height= "Wrap_content"Android:drawselectorontop= "false"/> </LinearLayout></LinearLayout>

The following code is the code in Activity_user.xml

<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:id= "@+id/linearlayout2"Android:layout_width= "Fill_parent"Android:layout_height= "Fill_parent"android:orientation= "Horizontal"Android:paddingleft= "10dip"Android:paddingright= "10dip"Android:paddingtop= "1dip"Android:paddingbottom= "1dip"Tools:context= "${relativepackage}.${activityclass}" > <TextView Android:id= "@+id/user_name"Android:layout_width= "180dip"Android:layout_height= "30dip"android:textsize= "10pt"Android:singleline= "true"/> <TextView Android:id= "@+id/user_ip"Android:layout_width= "Fill_parent"Android:layout_height= "Fill_parent"android:gravity= "Right"android:textsize= "10pt"/></linearlayout>

Android Learning Note--listview