Clearing TextView in Android -

i'm facing problem textview. not erasing previous instances of data.

when i'm running application in emulator displays output data in textview. that's fine. when i'm clicking button in emulator , re opening application not clear previous data. instead appends data existing data.

any appreciated.

my code below:

public class mainactivity extends actionbaractivity  {     private textview mtextview;     @override    protected void oncreate(bundle savedinstancestate)     {        super.oncreate(savedinstancestate);        setcontentview(r.layout.activity_main);        mtextview = (textview) findviewbyid(r.id.text_test);        new thread(new testlocalhost()).start();    }     private class testlocalhost implements runnable     {        @override        public void run()         {         final string s = jsonparser.doget("http://192.168.0.107:15071/getresult.ashx?op=getinfo",null);         runonuithread(new runnable()              {                @override                public void run()                 {                        mtextview.settext(s);                    }            });        }    } } 

it's happening because app still lives in emulator memory, need force kill if want app run again scratch.

you should click on "running processes" button , swipe left/right app process.

in scenario described activity wasn't destroyed yet, , when reopen onresume() method being called.