Increase The Time Using CountDownTimer Android

Button button;

EditText editText;

CountDownTimer timer;
int min = 0;
int sec = 0;

button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {

timer = new CountDownTimer(61000,1000) {
@Override
public void onTick(long millisUntilFinished) {

if (sec==59){
sec = 0;
min = min+1;
String text = String.format(Locale.getDefault(),"%02d min: %02d sec",min,sec);
editText.setText(text);

}else {
sec = sec+1;
String text = String.format(Locale.getDefault(),"%02d min: %02d sec",min,sec);
editText.setText(text);

}

}

@Override
public void onFinish() {

Toast.makeText(DesignActivity.this, "Timer Stopped...", Toast.LENGTH_SHORT).show();
}
};

timer.start();

}
});