. Net Moving Android 4.4 daily notes (--pulltorefresh) drop-down refresh using

Drop-down refresh a lot of places are used, Sina Weibo,, Baidu News

Here we use an open source library called: Pulltorefresh

Open Source Address: Https://github.com/chenyoca/pull-to-refresh

: Https://github.com/chenyoca/pull-to-refresh/archive/master.zip

After extracting the code, import it into the project via Ecplise.

Library path Reference error may occur after import

Right-click on the project to correct the library

Running the main activity

Then you can see the effect! Next we create a project ourselves to use this control

Create a new project Usingpulltorefresh

To reference the library after creation, which is a bit like a C # project, to reference an assembly (3 libraries are referenced)

A different jar version error is reported after the reference is completed

So we're going to make the library and the version of our project consistent.

Copy the Android-support-v4.jar under the Libs

Copy to the newly referenced 3 libraries and replace the Android-support-v4.jar under Libs

Modify the code for Mianactivity.java and Activity_main.xml

Package Com.example.usingpulltorefresh;import Java.util.arraylist;import java.util.list;import Com.handmark.pulltorefresh.library.pulltorefreshbase;import Com.handmark.pulltorefresh.library.pulltorefreshbase.onrefreshlistener;import Com.handmark.pulltorefresh.library.pulltorefreshlistview;import Android.app.activity;import Android.app.actionbar;import Android.app.fragment;import Android.os.asynctask;import Android.os.Bundle;import Android.view.layoutinflater;import Android.view.menu;import Android.view.menuitem;import Android.view.View;import Android.view.viewgroup;import android.widget.arrayadapter;import android.widget.listview;import android.os.Build; Public classMainactivity extends Activity {PrivatePulltorefreshlistview LV; PrivateArrayadapter<string>adapter; PrivateList<string>list; @Overrideprotected voidonCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.layout.activity_main); //Find to controlLV =(Pulltorefreshlistview) Findviewbyid (r.id.lv); List=NewArraylist<string>(); List.add ("Banana"); List.add ("Apple"); Adapter=NewArrayadapter<string> ( This, Android.        R.layout.simple_list_item_1,list);                Lv.setadapter (adapter); Lv.setonrefreshlistener (NewOnrefreshlistener<listview>() {@Override Public voidOnrefresh (pulltorefreshbase<listview>Refreshview) {                //TODO auto-generated Method Stub                NewAsynctask<void,void,void>() {@Overrideprotectedvoid Doinbackground (void ... arg0) {//TODO auto-generated Method Stub                        Try{Thread.Sleep ( -); } Catch(interruptedexception e) {//TODO auto-generated Catch blockE.printstacktrace (); }                        return NULL; }                                        protected voidOnPostExecute (Void result) {Adapter.addall ("Watermelon","Orange","Dragon Fruit");                    Lv.onrefreshcomplete ();            }}.execute ();    }        }); } @Override Publicboolean 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; } @Override Publicboolean onoptionsitemselected (MenuItem item) {//Handle Action Bar item clicks here. The Action Bar would//automatically handle clicks on the Home/up button, so long//As you specify a the parent activity in Androidmanifest.xml.        intID =Item.getitemid (); if(id = =r.id.action_settings) {            return true; }        returnsuper.onoptionsitemselected (item); }    }

mainactivity

<LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android.com/tools"Android:id= "@+id/container"android:orientation= "vertical"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"Tools:context= "Com.example.usingpulltorefresh.MainActivity"Tools:ignore= "Mergerootframe" >    <Com.handmark.pulltorefresh.library.PullToRefreshListViewAndroid:id= "@+id/lv"Android:layout_width= "Fill_parent"Android:layout_height= "Fill_parent"        >    </Com.handmark.pulltorefresh.library.PullToRefreshListView></LinearLayout>

Activity_main

OK, you can run it!

Direct Download Source: Http://pan.baidu.com/s/1mgKBkrI