buildRowFour method
Implementation
Widget buildRowFour() {
return Row(
children: [
BackspaceKey(onBackspace: _backspaceHandler),
Container(
width: 1,
height: 60,
color: Colors.grey.withOpacity(0.4),
),
TextKey(text: '0', onTextInput: _textInputHandler),
Container(
width: 1,
height: 60,
color: Colors.grey.withOpacity(0.4),
),
CheckKey(onCheck: _onSubmitHandler)
],
);
}