i solved my problem. Thats really simple. (:
just check the isFocused() before the setText();
case R.id.dis_one_percent: (this is text1)
if(!text.equals(""))
{
if( text1.isFocused())
text2.setText(Double.toString(text));
}
break;
case R.id.dis_one_number: (and text2)
if(!text.equals(""))
{
if( text2.isFocused())
text1.setText(Double.toString(text+"LOL"));
}
Sorry for your time. And thanks for your replies...