title: How to get flutter datepicker value to the textfield?
body: <p>How to get flutter date picker value to the textfield?when i click the text field it is pop up date picker after choosing date. i wanted to be that date in the textfield</p>
  <p>also.</p>
  <p>i want to customise the color of the date picker</p>
  <pre><code>     onTap: () {
         FocusScope.of(context).requestFocus(new FocusNode());
         showDatePicker(
         context: context,
         initialDate: DateTime.now(),
         firstDate: DateTime(2019, 1),
         lastDate: DateTime(2021,12),
          );
         },
  </code></pre>