DART

textfield border radius flutter

TextFormField(
  decoration: InputDecoration(
    border: OutlineInputBorder(
      borderRadius: BorderRadius.circular(8),
    ),
  ),
),

flutter textfield rounded

TextField(
                decoration: InputDecoration(
                  border: OutlineInputBorder(
                    borderRadius: BorderRadius.circular(30.0),
                  )
                ),
              )

textfield border radius flutter

TextField(
     decoration: InputDecoration(
        border: OutlineInputBorder(
           borderRadius: BorderRadius.circular(30),
           borderSide: BorderSide(color: Colors.grey, width: 1.5),
        ),    
    ),
)

textfield border radius flutter

TextField(
   cursorHeight: 20,
   autofocus: false,
   controller: TextEditingController(text: "Initial Text here"),
   decoration: InputDecoration(
      labelText: 'Enter your username',
      hintText: "Enter your Name",
      prefixIcon: Icon(Icons.star),
      suffixIcon: Icon(Icons.keyboard_arrow_down),
      contentPadding: const EdgeInsets.symmetric(vertical: 10,horizontal: 10),
      border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(30),
          borderSide: BorderSide(color: Colors.grey, width: 2),
      ),
      enabledBorder: OutlineInputBorder(
        borderRadius: BorderRadius.circular(30),
        borderSide: BorderSide(color: Colors.grey, width: 1.5),
     ),
     focusedBorder: OutlineInputBorder(
        gapPadding: 0.0,
        borderRadius: BorderRadius.circular(30),
        borderSide: BorderSide(color: Colors.red, width: 1.5),
     ),
   ),
)

make text filed round flutter

new TextField(
  decoration: new InputDecoration(
      border: new OutlineInputBorder(
        borderRadius: const BorderRadius.all(
          const Radius.circular(10.0),
        ),
      ),
      filled: true,
      hintStyle: new TextStyle(color: Colors.grey[800]),
      hintText: "Type in your text",
      fillColor: Colors.white70),
)