Android EditText input
<p>Okey, I have EditText where user inputs some  mathematical expression, and I want to calculate  result. It sounds pretty esay at first, but I dont know how to do it in just one EditText?</p>

<p>In regular java, its possible with javax.script, is there any way to do it on Android?</p>

<p>Another issue that is connected to the previous, is that I have 5 TextView where computer put some random numbers, and I want forbid to enter in EditText all other numbers except that 5 numbers that are placed in TextView's.</p>
