I have another problem i can't solve by myselve.

My situation: I have four FrameLayouts in LinearLayouts.

enter image description here

I color them, set Layout hight and width at wrap content and just change the minwidth to use them as a status or progress bar.

To adjust the bars i have a method:

public void update_bars(){

    FrameLayout bar_eat = (FrameLayout)findViewById(R.id.bar_eat);
    FrameLayout bar_drink = (FrameLayout)findViewById(R.id.bar_drink);
    FrameLayout bar_wash = (FrameLayout)findViewById(R.id.bar_wash);
    FrameLayout bar_care = (FrameLayout)findViewById(R.id.bar_care);


This method works fine from everywhere in my activity. But i also want to call this update_bars() method every second so i made a timer for it.

private void update(){

    Timer timer = new Timer();
    timer.schedule(new TimerTask(){

        public void run() {


    },0,(1000* getResources().getInteger(R.integer.remove_speed_inSecond)));

But at this point it crashes....

The debugger says this:

Thread [<12> Timer-0] (ViewRootImpl$CalledFromWrongThreadException)
Timer$TimerImpl.run() Zeile: 290

So where it the problem? And what can i do? I woud be very happy if someone have an idear because i'm going crazy^^

  • \$\begingroup\$ Voting to close as "too localized"; this is a "please debug my code for me" question. \$\endgroup\$ Commented Mar 30, 2013 at 23:18
  • \$\begingroup\$ Right, it was an question linke this. But what shoud i do else if i can't figurout the problem? \$\endgroup\$
    – Spenhouet
    Commented Mar 31, 2013 at 11:21

1 Answer 1


Timer creates new thread. You can't update UI from non UI thread. Use Handler, AsyncTask or runOnUiThread method.

  • \$\begingroup\$ Thank you sooooo much :) runOnUiThread worked for me. Quit simple^^ :) \$\endgroup\$
    – Spenhouet
    Commented Mar 31, 2013 at 0:31

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