Android about version update issues

In Android, detecting version updates is a common feature of every app, and we're trying to make it simple.
Layout code here does not need to write, a button to detect updates, here I am a Gson file as an example of the request version ...
The first step is to parse the data:

Request version Final String url= "Http://192.168.253.2:8080/gson/banbenwenjian.json" on the network server; Httputils utils=new httputils () utils.configtimeout; Utils.send (httpmethod.get, url, new requestcallback< String> () {@Overridepublic void OnFailure (HttpException arg0, String arg1) {//TODO auto-generated method stub} @Overri depublic void onsuccess (responseinfo<string> arg0) {//TODO auto-generated method stubmnetdata = Arg0.result; Gson gson=new Gson () Banben = Gson.fromjson (Mnetdata, banben.class); mUrl1 = Banben.geturl (); mname = Banben.getname (); Mversion = Banben.getversion (); handler.sendemptymessage (0);}});

Handler accepts data through construction methods toUpdatemanager class

Private Handler handler=new Handler () {public void Handlemessage (Android.os.Message msg) {LOG.D ("U", murl1+mname+ Mversion); Updatemanager manager = new Updatemanager (getactivity (), murl1,mname,mversion); Manager.checkupdate ();};};

-------------------------Parse Bean class------------get version number and name

public class Banben implements Serializable{private string Version;private string name;private string Url;public string ge Tversion () {return version;} public void Setversion (String version) {this.version = version;} Public String GetName () {return name;} public void SetName (String name) {this.name = name;} Public String GetUrl () {return URL;} public void SetUrl (String url) {this.url = URL;} @Overridepublic String toString () {return "Banben [version=" + version + ", name=" + name + ", url=" + url+ "]";}}

-----------------------------Updatemanager-------------------

Import Java.io.file;import java.io.fileoutputstream;import Java.io.ioexception;import Java.io.InputStream;import Java.net.httpurlconnection;import Java.net.malformedurlexception;import Java.net.url;import java.util.ArrayList; Import Com.hao.happyshoppingapp.r;import Com.seven.bean.banben;import Android.app.alertdialog;import Android.app.dialog;import Android.app.alertdialog.builder;import Android.content.context;import Android.content.dialoginterface;import Android.content.intent;import Android.content.dialoginterface.onclicklistener;import android.content.pm.PackageManager.NameNotFoundException; Import Android.net.uri;import android.os.environment;import Android.os.handler;import Android.os.Message;import Android.util.log;import Android.view.layoutinflater;import Android.view.view;import Android.widget.ProgressBar; Import Android.widget.toast;public class Updatemanager {/* download */private static final int DOWNLOAD = 1;/* Download End */private s tatic Final int download_finish = 2;/* Download Save path */privaTe String msavepath;/* records the number of progress bars */private int progress;/* whether to cancel update */private boolean cancelupdate = False;private Context mCo ntext;/* Update progress bar */private ProgressBar mprogress;private banben banben;private Dialog mdownloaddialog;private String url1; private string Name;private string version;private Handler Mhandler = new Handler () {public void Handlemessage (Message msg) {switch (msg.what) {//Is downloading case download://setting progress bar position mprogress.setprogress (progress); Break;case download_finish:// Installation file installapk (); break;default:break;};}; Public Updatemanager (Context mcontext, String url1, String name,string version) {super (); this.mcontext = Mcontext; THIS.URL1 = Url1;this.name = Name;this.version = version;} /** * detection software update */public void Checkupdate () {if (Isupdate ()) {shownoticedialog ();//Display Prompt Dialog} else{toast.maketext (Mcontext, R.string.soft_update_no, Toast.length_long). Show ();}} /** * Check if the software has an updated version * * @return */private boolean isupdate () {//get current software version int versioncode = Getversioncode (Mcontext); LOG.D ("Versioncode", versIoncode+ ""); if (null! = name) {int servicecode = integer.valueof (version);//versions determine if (Servicecode > Versioncode) {return true;}} return false;} private void Request_serverban () {//TODO auto-generated method Stubtoast.maketext (Mcontext, "performed to", 0). Show (); /** * Get software version number * * @param context * @return */private int Getversioncode (context context) {int versioncode = 0;try{//Get Software edition This number corresponds to androidmanifest.xml under Android:versioncodeversioncode = Context.getpackagemanager (). Getpackageinfo (" Com.hao.happyshoppingapp ", 0). Versioncode;} catch (Namenotfoundexception e) {e.printstacktrace ();} return versioncode;} /** * Show software Updates dialog box */private void Shownoticedialog () {//construct dialog Alertdialog.builder builder = new Builder (mcontext); Builder.settitle (R.string.soft_update_title); Builder.setmessage (r.string.soft_update_info);// Update Builder.setpositivebutton (R.STRING.SOFT_UPDATE_UPDATEBTN, New Onclicklistener () {@Overridepublic void OnClick ( Dialoginterface dialog, int which) {Dialog.dismiss ();//Display Download dialog box Showdownloaddialog ();}); /Later update Builder.setnegativebutton (R.string.soft_update_later, New Onclicklistener () {@Overridepublic void OnClick ( Dialoginterface dialog, int which) {Dialog.dismiss ();}});D Ialog Noticedialog = Builder.create (); Noticedialog.show ();} /** * Show software download dialog box */private void Showdownloaddialog () {//Construct software Download dialog box Alertdialog.builder builder = new Builder (mcontext); Builder.settitle (r.string.soft_updating);//Add a progress bar to the download dialog final Layoutinflater inflater = Layoutinflater.from (mContext ); View v = inflater.inflate (r.layout.softupdate_progress, null); mprogress = (ProgressBar) V.findviewbyid (r.id.update_ progress); Builder.setview (v);//Cancel Update Builder.setnegativebutton (R.string.soft_update_cancel, New Onclicklistener () { @Overridepublic void OnClick (dialoginterface dialog, int which) {Dialog.dismiss ();//Set cancel status CancelUpdate = True;}}); Mdownloaddialog = Builder.create (); Mdownloaddialog.show ();//Now File downloadapk ();} /** * Download apk file */private void downloadapk () {//start new thread to download software new Downloadapkthread (). Start (); /** * Download File thread * * @author COOLSZY * @date 2012-4-26 * @blog http://blog.92coding.com */private class Downloadapkthread extends thread{@Overridepublic void Run () {try{//determines if the SD card exists and has read and write permissions if (Environment.getexternalstoragestate (). Equals (environment.media_mounted)) {// Get the path to the memory card string sdpath = Environment.getexternalstoragedirectory () + "/"; Msavepath = Sdpath + "Download"; URL url = new URL (url1);//Create connection HttpURLConnection conn = (httpurlconnection) url.openconnection (); Conn.connect ();// Gets the file size int length = Conn.getcontentlength ();//Create input stream InputStream is = Conn.getinputstream (); File File = new file (msavepath);//Determine if the directory exists if (!file.exists ()) {File.mkdir ();} File Apkfile = new file (msavepath, name); FileOutputStream fos = new FileOutputStream (apkfile); int count = 0;//cache byte buf[] = new byte[1024];//write to file Do{int Numrea D = Is.read (BUF); count + = numread;//Calculate progress bar Position progress = (int) ((float) count/length) * 100);//Update Progress Mhandler.sendemptymes Sage (DOWNLOAD); if (numread <= 0) {//Download complete mhandler.sendemptymessage (download_finish); break;}Write file Fos.write (buf, 0, numread);} while (!cancelupdate);//Click Cancel to stop the download. Fos.close (); Is.close ();}} catch (Malformedurlexception e) {e.printstacktrace ();} catch (IOException e) {e.printstacktrace ();} The Cancel Download dialog box displays Mdownloaddialog.dismiss ();}};/ * * Install APK file */private void installapk () {File Apkfile = new File (msavepath, name); if (!apkfile.exists ()) {return;} Install apk file via Intent Intent i = new Intent (Intent.action_view); I.setdataandtype (Uri.parse ("file://" + apkfile.tostring () ), "application/vnd.android.package-archive"); mcontext.startactivity (i);}}

The important method in the above class has comments to be able to take a look at a number of useful methods ~ ~

Finally to show you the server Gson file, I use the Tomcat server as a test, of course, you can do as you wish.

{    "name": "Happyshopping",    "url": "http://192.168.253.2:8080/anzhuangbao/HappyShoppingApp.apk",    " Version ": 2}

Android about version update issues