Flutter輸入框

Container(
    padding: EdgeInsets.fromLTRB(0, 5, 0, 20),
    child: ConstrainedBox(
    constraints: BoxConstraints(
    maxHeight: 55,
    ),
    child: TextField(
     keyboardType: TextInputType.number,
     decoration: new InputDecoration(
     focusedBorder: OutlineInputBorder(
     borderSide: BorderSide(color: Color(0xFFb79236), width: 2.0),
    ),
    enabledBorder: OutlineInputBorder(
    borderSide: BorderSide(color: Color(0xFFbdbdbd), width: 1.0),
    ),
    hintText: '提示文字',
    hintStyle: TextStyle(color: Color(0xFFb79236))
    ),
   ),
  ),
 ),