[Switch] Google's swiperefreshlayout pull-down refresh usage

Swiperefreshlayout is a pull-down refresh component updated by Google in the support V4 19.1 library, making it easier to refresh.

Use:

1. First download the latest android-support-v4.jar version, the previous version is not swiperefreshlayout drop-down refresh control, if updated, this step can be omitted.

2. InXMLFile ReferenceAndroid. Support. v4.widget. swiperefreshlayoutControls, which can be placed with any controls, such as listview and gridview.

 1     <android.support.v4.widget.SwipeRefreshLayout   2         android:id="@+id/swipe_refresh"   3         android:layout_width="match_parent"   4         android:layout_height="match_parent" >   5        6         <ListView   7             android:id="@+id/listview"   8             android:layout_width="match_parent"   9             android:layout_height="match_parent" >  10         </ListView>  11     </android.support.v4.widget.SwipeRefreshLayout>  

 

3. Use it in a Java file.

1/** 2 * Home Page 3 * @ author W. W 4 */5 public class mainactivity extends activity implements swiperefreshlayout. onrefreshlistener {6 7/** 8 * Add a drop-down refresh 9 */10 private swiperefreshlayout swipelayout to the listview; 11 12/* 13 * listview 14 */15 private listview; 16 17/** 18 * listview adapter 19 */20 private listviewadapter adapter; 21 22 private list <iteminfo> infolist; 23 24 @ override 25 protected void oncreate (bundle savedinstancestate) {26 super. oncreate (savedinstancestate); 27 setcontentview (R. layout. activity_main); 28 29 swipelayout = (swiperefreshlayout) This. findviewbyid (R. id. swipe_refresh); 30 swipelayout. setonrefreshlistener (this); 31 32 // The top refresh style 33 swipelayout. setcolorscheme (Android. r. color. holo_red_light, android. r. color. holo_green_light, 34 android. r. color. holo_blue_bright, android. r. color. holo_orange_light); 35 36 infolist = new arraylist <iteminfo> (); 37 iteminfo info = new iteminfo (); 38 info. setname ("coin"); 39 infolist. add (Info); 40 listview = (listview) This. findviewbyid (R. id. listview); 41 adapter = new listviewadapter (this, infolist); 42 listview. setadapter (adapter); 43} 44 45 public void onrefresh () {46 new handler (). postdelayed (New runnable () {47 Public void run () {48 swipelayout. setrefreshing (false); 49 iteminfo info = new iteminfo (); 50 info. setname ("coin-refresh"); 51 infolist. add (Info); 52 adapter. notifydatasetchanged (); 53} 54}, 500); 55} 56}

Demo: http://download.csdn.net/detail/xue_wei_love/7135315