How to return icon to TextFormField's validator as string

user_16870716 0
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im trying to trigger an error with textformfield validate.i can trigger only a text but i need to add a icon too. its working;

 validate: (value) {
     if (value == null || value.isEmpty) {
          return 'Please enter your email address';
         } else if (isValid == false) {
           return "❗Please enter a valid email address.";
         }

but i need do add a svg icon. when i return svg icon and text in a row, app is crashing. how can i return a svg and text in here? thanks all

dart flutter
1 Answers

First of all define a variable

bool isEmailValid =  true;

Now in the InputDecoreation

prefixIcon = isEmailValid ?? null : SvgIcon()

Replace SVGIcon with Some code which will render the icon

Edit:

Also in the validate function

validate:(v){
   if(emailIsNotValidCondition){
       setState(){isEmailValid=false}
   }

}
user_139300550
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