Android software version update

public class Mainactivity extends Activity {
private static final String download_address = "http://10.0.2.2:8080/test1118/weishi360.apk";
private static final String check_address = "Http://10.0.2.2:8080/test1118/version.xml";
private static final String package_name = "Com.ruicaiedu.day_1224_updatesoftware";

Private Alertdialog Dialog;
Private ProgressBar PB;
Private ProgressBar pb_download;
Private APK apk;

Private String oldversion;
Private String newversion;

Private Handler Handler = new Handler () {
@Override
public void Handlemessage (Message msg) {
Switch (msg.what) {
Case 1://has a new version
APK = (apk) msg.obj;
NewVersion = Apk.getversionname ();
Oldversion = Getversionname ();
if (!newversion.equals (oldversion)) {
ShowDialog ();
}
Break

Default
Break
}
}
};

@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.activity_main);

Initwidgets ();
Parsexmlwithpull (check_address);
}

private void Initwidgets () {
PB = (ProgressBar) Findviewbyid (R.ID.PB);
Pb_download= (ProgressBar) Findviewbyid (r.id.pb_download);
}

Public String Getversionname () {
String versionname = "";
Packagemanager pm = Getpackagemanager ();
try {
PackageInfo PackageInfo = Pm.getpackageinfo (Package_name,
Packagemanager.get_instrumentation);
Versionname = Packageinfo.versionname;
} catch (Namenotfoundexception e) {
E.printstacktrace ();
}
return versionname;
}

public void ShowDialog () {

dialog = new Alertdialog.builder (this). Settitle ("Software update Tips")
. Setmessage ("There is a new version, do you want to update now?") ")
. Setpositivebutton ("Update Now", new Onclicklistener () {

@Override
public void OnClick (dialoginterface arg0, int arg1) {
Pb.setvisibility (View.gone);
Pb_download.setvisibility (view.visible);
New Downloadasynctask (). Execute (download_address);//Allow asynchronous tasks to download
}
}). Setnegativebutton ("Cruel refusal", new Onclicklistener () {

@Override
public void OnClick (dialoginterface arg0, int arg1) {

}
}). Create ();
Dialog.show ();
}

Parsing xml
public void Parsexmlwithpull (String address) {
Httputil.sendrequest (Address, new Httpcallbacklistener () {

@Override
public void OnFinish (InputStream is) {
try {
Xmlpullparserfactory parserfactory = xmlpullparserfactory
. newinstance ();
Xmlpullparser Pullparser = Parserfactory.newpullparser ();
Pullparser.setinput (IS, "utf-8");
int eventtype = Pullparser.geteventtype ();
APK = new apk ();

while (eventtype! = xmlpullparser.end_document) {
if (EventType = = Xmlpullparser.start_tag) {
String tagName = Pullparser.getname ();
if (tagname.equals ("name")) {
Apk.setname (Pullparser.nexttext ());
} else if (tagname.equals ("url")) {
Apk.setaddress (Pullparser.nexttext ());
} else if (Tagname.equals ("version")) {
Apk.setversionname (Pullparser.nexttext ());
}
}
EventType = Pullparser.next ();
}
Message msg = Message.obtain ();
Msg.what = 1;
Msg.obj = apk;
Handler.sendmessage (msg);
} catch (Xmlpullparserexception e) {
E.printstacktrace ();
} catch (IOException e) {
E.printstacktrace ();
}

}

@Override
public void OnError (Exception e) {

}
});
}

Customize an asynchronous task to download
Class Downloadasynctask extends Asynctask<string, Integer, string> {
int currentsize = 0;
int totalsize = 0;
File file = null;

Time-consuming operation
@Override
Protected string Doinbackground (String ... params) {
try {
URL url = new URL (params[0]);
HttpURLConnection connection = (httpurlconnection) URL
. OpenConnection ();
Connection = (httpurlconnection) url.openconnection ();

Connection.setreadtimeout (5000);
Connection.setconnecttimeout (5000);
Connection.setdoinput (TRUE);
Connection.setdooutput (TRUE);
Connection.setusecaches (FALSE);
InputStream is = Connection.getinputstream ();

TotalSize = Connection.getcontentlength ();
File = new file (Environment.getexternalstoragedirectory (),
"/360weishi.apk");
DataOutputStream OS = new DataOutputStream (
New FileOutputStream (file));
int len = 0;
byte[] buffer = new byte[4096];
while (len = is.read (buffer))! =-1) {
Os.write (buffer, 0, Len);
Publishprogress (len);
}
//Where file is the downloaded files object
Intent Intent = new Intent ();
Intent.setaction ("Android.intent.action.VIEW");//Set Intent action
Intent.addcategory (" Android.intent.category.DEFAULT ");//Add extra data for Intent
Intent.setdataandtype (uri.fromfile (file),
" application/ Vnd.android.package-archive ");//Set Intent data with type
StartActivity (intent);//Activate the intent

} catch ( Malformedurlexception e) {
E.printstacktrace ();
} catch (IOException e) {
E.printstacktrace ();
}
Return "Download Complete";
}

Interface update
@Override
protected void Onprogressupdate (Integer ... values) {
CurrentSize + = Values[0];
Pb.setprogress ((int) (double) currentsize/totalsize * PB
. Getmax ()));
Super.onprogressupdate (values);
}

Task complete
@Override
protected void OnPostExecute (String result) {
Super.onpostexecute (result);
Toast.maketext (Getapplicationcontext (), result, Toast.length_short)
. Show ();
Pb.setvisibility (View.gone);
}

}

}

Android software version update