how can I call function every 10 sec?

Use a combination of Timer and TimerTask like this:

int delay = 0; // delay for 0 sec. 
int period = 10000; // repeat every 10 sec. 
Timer timer = new Timer(); 
timer.scheduleAtFixedRate(new TimerTask() 
{ 
    public void run() 
    { 
        //Call function
    } 
}, delay, period); 

Also make sure to use runOnUiThread() if you want to modify the UI.

Do it like this:

final Handler ha=new Handler();
ha.postDelayed(new Runnable() {

    @Override
    public void run() {
        //call function

        ha.postDelayed(this, 10000);
    }
}, 10000);