Android Studio ListView Simple Instance

Layout layouts

<?xml version= "1.0" encoding= "Utf-8"?>

<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:paddingleft= "@dimen/activity_horizontal_margin"

android:paddingright= "@dimen/activity_horizontal_margin"

android:paddingtop= "@dimen/activity_vertical_margin"

android:paddingbottom= "@dimen/activity_vertical_margin"

>

<listview

Android:layout_width= "Match_parent"

android:layout_height= "Match_parent"

Android:id= "@android: Id/list"

/>

</RelativeLayout>

Code

Package Com.example.test.testlistview;

Import android.app.ListActivity;

Import Android.os.Bundle;

Import Android.view.View;

Import Android.widget.ArrayAdapter;

Import Android.widget.ListView;

Import Android.widget.TextView;

Import Android.widget.Toast;

Import java.util.ArrayList;

Import java.util.List;

public class Listviewarrayadapter extends Listactivity {

@Override

protected void OnCreate (Bundle savedinstancestate) {

Super.oncreate (savedinstancestate);

Setcontentview (R.layout.activity_list_view_arrayadapter);

List<string>ls = new arraylist<string> ();

Ls.add ("test data 1");

Ls.add ("Test Data 2");

Ls.add ("test data 1");

Ls.add ("Test Data 2");

Ls.add ("test data 1");

Ls.add ("Test Data 2");

Ls.add ("test data 1");

Ls.add ("Test Data 2");

Ls.add ("test data 1");

Ls.add ("Test Data 2");

Ls.add ("test data 1");

Ls.add ("Test Data 2");

Arrayadapter Adapter =new arrayadapter (this,android. R.LAYOUT.SIMPLE_LIST_ITEM_1,LS);

Setlistadapter (adapter); This function is only inherited by Listactivity

}

@Override

protected void Onlistitemclick (ListView l, View v, int position, long ID) {

String s = ((TextView) v). GetText (). toString ();

Toast.maketext (This, "hint" +position+s,toast.length_long). Show ();

Super.onlistitemclick (l, V, position, id);

}

}

//

A simple listview, the key is the Arrayadapter layout and data adaptation. Android. R.layout.simple_list_item_1 the style of the system, you can change the layout style according to your own requirements. List<string>ls = new Arraylist<string> () is used to display the data.

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Simpleadapter fit in a ListView

Layout

<?xml version= "1.0" encoding= "Utf-8"?>

<linearlayout xmlns:android= "Http://schemas.android.com/apk/res/android"

android:orientation= "Horizontal" android:layout_width= "Match_parent"

android:layout_height= "Match_parent" >

<imageview

Android:id= "@+id/img2"

android:layout_height= "Wrap_content"

Android:layout_width= "Wrap_content"

/>

<linearlayout

Android:layout_width= "Wrap_content"

android:layout_height= "Wrap_content"

android:orientation= "Vertical" >

<textview

Android:id= "@+id/title2"

Android:layout_width= "Wrap_content"

android:layout_height= "Wrap_content"/>

<textview

Android:id= "@+id/price"

Android:layout_width= "Wrap_content"

android:layout_height= "Wrap_content"/>

</LinearLayout>

</LinearLayout>

Key Code Settings ListView

Simpleadapter adapter1 =new simpleadapter (this,lm,r.layout.simple2, new string[]{"title", "IMG", "Price"},new int[]{ R.id.title2,r.id.img2,r.id.price});

Setlistadapter (Adapter1);

Get the data

Public list<map<string, object>> GetData2 ()

{

Map<string,object>value =new hashmap<string,object> ();

LIST<MAP<STRING,OBJECT>>LM =new arraylist<map<string,object>> ();

Value.put ("title", "Apple");

Value.put ("img", R.drawable.aphone);

Value.put ("Prices", "Price: 5800");

Lm.add (value);

Value =new hashmap<string,object> ();

Value.put ("title", "Samsung");

Value.put ("img", R.drawable.sphone);

Value.put ("Prices", "Price: 4800");

Lm.add (value);

Value =new hashmap<string,object> ();

Value.put ("title", "Huawei");

Value.put ("img", R.drawable.hphone);

Value.put ("Prices", "Price: 6000");

Lm.add (value);

return LM;

}

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Simplecursoradapter adaptation ListView for the display of database data

Key code

Get a Cursor object pointing to the system contacts database to get the data source

cursor cursor = getcontentresolver (). query (Contacts.people.content_uri,null,null,null,null);

Startmanagingcursor (cursor);

Instantiating a list adapter

ListAdapter la = new Simplecursoradapter (this,android. R.layout.simple_list_item_2,cursor,new string[]{contacts.people.name,contacts.people.number},new int[]{android. R.id.text1,android. R.ID.TEXT2});

Setlistadapter (LA);

Be sure to read the contact's permissions in Androidmanifest.xml.

<uses-permission android:name= "Android.permission.READ_CONTACTS"/>

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Code download

http://down.51cto.com/data/2119105

Android Studio ListView Simple Instance