final Chronometer counter = (Chronometer) findViewById(R.id.chronometer1); counter.setOnChronometerTickListener(new OnChronometerTickListener() { public void onChronometerTick(Chronometer chronometer) { // TODO Auto-generated method stub chronometer.refreshDrawableState(); } }); final ToggleButton togglebutton = (ToggleButton) findViewById(R.id.togglebutton1); togglebutton.setOnClickListener(new OnClickListener() { public void onClick(View v) { // Perform action on clicks if (togglebutton.isChecked()) { counter.start(); } else { counter.stop(); } } });