title: Android: Click Button that opens AlertDialog with Number Pad
body: <p>Basically, I have a button called "Check In," and I can get it to open an AlertDialog, but not the way I want it to. I want it to open an AlertDialog that opens up an EditText, so I can input a number using the numberpad (telephone style). And then I will call a method using that value: "checkIn(value)" if they click the positivebutton (Check In), or it will do nothing if they click the negative button (Cancel).</p>