title: Android number input with plus and minus sign
body: <p>I am developing in Android and I would like an input field for numbers, where the user can select the correct number using the plus sign at the top and the minus sign at the bottom of the input field. I know this works for <code>DatePicker</code>. Is there some property or something similar to make this available for any integer number input field?</p>
  
  <p>Thanks</p>