flutter textfield underline code example

Example 1: underline text in flutter

Text(
  'Hello world',
  style: TextStyle(
    decoration: TextDecoration.underline,
  ),
)

Example 2: flutter text form field change underline color

decoration: InputDecoration(        
  enabledBorder: UnderlineInputBorder(      
    borderSide: BorderSide(color: theColor),   
  ),  
  focusedBorder: UnderlineInputBorder(
    borderSide: BorderSide(color: theColor),
  ),
  border: UnderlineInputBorder(
    borderSide: BorderSide(color: theColor),
  ),
)

Example 3: text underline flutter

Text(
  'Hello world',
  style: TextStyle(
    decoration: TextDecoration.underline,
  ),
)