process - Android: How to Make toast when ProgressDialog finishes -


i have activity in user needs download databases external source.

i want add toast when download finished or on progressdialog dismiss. can please me out, here's progressdialog ..

progressdialog barprogressdialog; handler updatebarhandler;  {     updatebarhandler = new handler();}   public void launchringdialog(view view) {     final progressdialog ringprogressdialog = progressdialog.show(emailhacker.this, "please wait ...",  "downloading data...", false);     ringprogressdialog.setcancelable(false);     new thread(new runnable() {         @override         public void run() {             try {                 thread.sleep(30000);             } catch (exception e) {             }             ringprogressdialog.dismiss();         }     }).start(); }

to call asynctask-

new task1().execute();

code-

class task1 extends asynctask<void, void, string> {              @override             protected void onpreexecute()              {             super.onpreexecute();             final progressdialog ringprogressdialog = progressdialog.show(emailhacker.this, "please wait ...",  "downloading data...", false);             ringprogressdialog.setcancelable(false);             }             @override             protected string doinbackground(void... arg0)             {                try {                 //do something...                 thread.sleep(30000);             } catch (interruptedexception e) {                 // todo auto-generated catch block                 e.printstacktrace();             }             return null;             }              @override             protected void onpostexecute(string result)              {                 super.onpostexecute(result);                 ringprogressdialog.dismiss();                 toast.maketext(emailhacker.this, "message", toast.length_long).show();              }         }     }

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