Android XML parsing Magic XStream Five: Transforming complex objects into XML and writing XML files to SD cards

Preface: For XStream do not understand, please see:

Android XMl parsing Magic XStream: Parse aa.xml file under Asset folder in Android project

Android XML parsing Magic XStream II: Converting objects to XML

Android XML parsing Magic XStream Three: Transforming complex objects into XML

Android XML parsing Magic XStream Four: parsing complex XMl files into objects

1, establish Javabeen

 PackageCom.android10; Public classPerson {String pName;        String PAge;  PublicString Getpname () {returnPName; }     Public voidsetpname (String pName) { This. PName =PName; }     PublicString GetPage () {returnPAge; }     Public voidsetpage (String pAge) { This. PAge =PAge; } }

 PackageCom.android10; Public classProduct {PrivateString name; PrivateString age; Privateperson person ;  PublicString GetName () {returnname; }     Public voidsetName (String name) { This. Name =name; }     PublicString getage () {returnAge ; }     Public voidsetage (String age) { This. Age =Age ; }     PublicPerson Getperson () {returnPerson ; }     Public voidSetperson (person person) { This. person =Person ; }}

2. Tool Class Code

 PackageCom.android10;ImportJava.io.File;Importjava.io.FileNotFoundException;ImportJava.io.FileOutputStream;Importjava.io.IOException;ImportJava.io.OutputStreamWriter;ImportAndroid.content.Context;Importandroid.os.Environment; Public classXstreamutil {xcallback xcallback; /*** Write XML string to SD card file *@paramContext *@paramstr XML string*/     Public voidWritetoxml (context context, String str) {//Get file pathString Sdpath = environment.getexternalstoragedirectory () + "/myfile1.xml/" ; //Create a fileFile File =NewFile (Sdpath); if( !file.exists ()) {            Try{file.createnewfile (); } Catch(IOException e) {e.printstacktrace (); }         }        //Write Data        Try{FileOutputStream out=Newfileoutputstream (file); OutputStreamWriter OUTW=NewOutputStreamWriter (out); Try{outw.write (str);                  Outw.close ();                  Out.close ();             Xcallback.success (); } Catch(IOException e) {xcallback.fail (); }          } Catch(FileNotFoundException E1) {e1.printstacktrace ();         Xcallback.fail (); }    }     voidSetxstreamlister (Xcallback xcallback) { This. Xcallback =Xcallback; }}Interfacexcallback{/*** Write Success*/    voidsuccess (); /*** Write Failed*/    voidfail (); }

3. Main methods

 PackageCom.android10;Importandroid.app.Activity;ImportAndroid.os.Bundle;ImportAndroid.widget.Toast;ImportCom.thoughtworks.xstream.XStream; Public classMainactivityextendsActivity {@Override Public voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.activity_main); Person Person=NewPerson (); Person.setpname ("Saliy" ) ; Person.setpage ("36" ); Product Product=NewProduct (); Product.setname ("Jhon" ) ; Product.setage ("30" );        Product.setperson (person); //To convert an object to an XML stringXStream XStream =NewXStream (); //Setting AliasesXstream.alias ("blog", Product.class ) ; String String=xstream.toxml (product); Xstreamutil Xutil=NewXstreamutil (); Xutil.setxstreamlister (NewXcallback () {@Override Public voidsuccess () {Toast.maketext (mainactivity. This, "succeeded.", Toast.length_short). Show (); } @Override Public voidfail () {Toast.maketext (mainactivity. This, "failed.", Toast.length_short). Show ();        }        }); Xutil.writetoxml ( This, String); }}

4. Operation result

<blog>
<age>30</age>
<name>jhon</name>
<person>
<pAge>36</pAge>
<pName>saliy</pName>
</person>
</blog>

Android XML parsing Magic XStream Five: Transforming complex objects into XML and writing XML files to SD cards