Android Learning note 36--using the original XML file

XML file

Using an XML file in Android requires the developer to manually create the Res/xml folder.

Examples are as follows:

Book.xml==><?xml version= "1.0" encoding= "Utf-8"?><books> <book publishdate= "2016.05.05" price= " 88.6 ">android Study notes </book> <book publishdate=" 2016.06.06 "price=" 88.6 ">android decryption </book> < Book publishdate= "2016.08.08" price= "88.6" >android in layman </book></books> layout file = = "<linearlayout 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:orientation= "vertical" tools:context= ". M Ainactivity "> <button android:id=" @+id/btntest "android:layout_width=" Wrap_content "Android : layout_height= "wrap_content" android:layout_gravity= "Center_horizontal" android:text= "Test" > </Bu tton> <edittext android:id= "@+id/edit" android:layout_width= "Match_parent" android:layout_he ight= "Wrap_content" > </edittext></linearlayout> Code Implementation = = "Package Com.example.myxml;import org.xmlpull.v1.xmlpullparserexception;import Android. R.xml;import Android.os.bundle;import Android.app.activity;import Android.content.res.xmlresourceparser;import Android.view.menu;import Android.view.view;import Android.view.view.onclicklistener;import Android.widget.Button; Import Android.widget.edittext;public class Mainactivity extends activity{@Overrideprotected void OnCreate (Bundle Savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (R.layout.activity_main); Button btntest = (button) This.findviewbyid (r.id.btntest); Btntest.setonclicklistener (new Onclicklistener () {@ overridepublic void OnClick (View v) {Xmlresourceparser XRP = getresources (). GETXML (R.xml.books); StringBuilder sb = new StringBuilder (); Try{while (Xrp.geteventtype ()! = xmlresourceparser.end_document) {if ( Xrp.geteventtype () = = Xmlresourceparser.start_tag)//If you encounter the start tag {//String TagName = Xrp.getname (); if (Xrp.getname (). Equals ("book")) {//Get property value by name Sb.append ("Price:"); Sb.append (Xrp.getattributevalue (NULL, "price"); Sb.append ("\ n");//Gets the attribute value Sb.append ("Publishdate: Sb.append (xrp.getattributevalue (0)), sb.append ("\ n"), Sb.append ("BookName:");//Gets the text information of the XML node Sb.append ( Xrp.nexttext ());} Sb.append ("\ n");} Xrp.next ();//Gets the next event of the parser}edittext edit = (EditText) Findviewbyid (R.id.edit); Edit.settext (sb.tostring ());} catch (Exception e) {e.printstacktrace ();}}});} @Overridepublic boolean Oncreateoptionsmenu (Menu menu) {//Inflate the menu; This adds items to the action Bar if it is pre Sent.getmenuinflater (). Inflate (R.menu.main, menu); return true;}}

Operating effect:

Android Learning note 36--using the original XML file