Solved - Check for update within android application not on Google Play -

i'm pretty new android coding, i'm sorry if make mistakes while asking question. i'm trying implement in-app updates personal use application , not put on play store. i've searched way through stack , found various methods through can achieved. tried own. thing is, doesn't work sometimes, , shows wrong information update being available. more specific, when compare curversioncode newversioncode, curversioncode = newversioncode, still shows newer version available.

here's activity -

public class test extends activity {     private handler mhandler;      @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.front);         mhandler = new handler();         checkupdate.start();         }     }      /* thread checks updates in background */     private thread checkupdate = new thread() {         public void run() {             try {                 url updateurl = new url("url txt file");                 bufferedreader in = new bufferedreader(new inputstreamreader(updateurl.openstream()));                 string str;                 while ((str = in.readline()) != null) {                 // str 1 line of text; readline() strips newline character(s)                 /* current version number */                 packageinfo packageinfo = getpackagemanager().getpackageinfo(getpackagename(), 0);                 int curversion = packageinfo.versioncode;                 int newversion = integer.valueof(str);                  /* higher version current out? */                 if (newversion > curversion) {                     /* post handler ui pick , open dialog */                     mhandler.post(showupdate);                 }                  }                 in.close();             } catch (exception e) {             }         }      };      /* runnable creates dialog , asks user open update link*/     private runnable showupdate = new runnable(){         public void run(){             new alertdialog.builder(browseractivity.this)                     .seticon(r.drawable.ic_launcher)                     .settitle("update available")                     .setmessage("an update available!\n\nopen update page , see details?")                     .setpositivebutton("yes", new dialoginterface.onclicklistener() {                         public void onclick(dialoginterface dialog, int whichbutton) {                             /* user clicked ok stuff */                             intent intent = new intent(intent.action_view, uri.parse("url update file"));                             startactivity(intent);                         }                     })                     .setnegativebutton("no", new dialoginterface.onclicklistener() {                         public void onclick(dialoginterface dialog, int whichbutton) {                             /* user clicked cancel */                         }                     })                     .show();         }     }; 

been searching few days, still ain't able find answer. i'm sorry if basic question i'm pretty new it.

thanks.

edit : code works fine. turns out requires time refresh version code on internet text file. doesn't matter, got experience.