How to make the text field accept other language flutter - flutter

Question

The Problem
When I try to type Arabic it just don't show. I tried to look for answer but most what I found how to make the whole app in different language.
Code
Form(
key: _formKey,
child: Container(
width: width-80,
child: TextFormField(
//for disable for the done button
controller: titleControl,
onChanged: (val) {
/*change the val of title*/
setState(() {
title = val;
});
},
/*validation*/
validator: (val) {
if (val!.isEmpty) {
return "Title should not be empty";
}
if (val.length >= 35) {
return "Create a shorter title under 36 characters.";
}
if ((val.contains("*") ||
val.contains("\\")||
val.contains("%") ||
val.contains("~") ||
val.contains("^") ||
val.contains("+") ||
val.contains("=") ||
val.contains("{") ||
val.contains("[") ||
val.contains("}") ||
val.contains("]") ||
val.contains(":") ||
val.contains(";") ||
val.contains("\\")||
val.contains("<") ||
val.contains(">") )) {
return "Title should not contain symbol. Only ',?!_-&##.";
}
return null;
},
decoration: const InputDecoration(
/*background color*/
fillColor: Palette.lightgrey,
filled: true,
contentPadding: const EdgeInsets.symmetric(
vertical: 1.0, horizontal: 10),
/*hint*/
border: OutlineInputBorder(),
hintText: "Title",
hintStyle: TextStyle(fontSize: 18.0,
color: Palette.grey,
height: 2.0,),
/*Border*/
focusedBorder: OutlineInputBorder(
borderSide: BorderSide(
color: Palette.midgrey,
),
),
enabledBorder: OutlineInputBorder(
borderSide: BorderSide(
color: Palette.midgrey,
width: 2.0,
),
),
),
),
),
),
/*end of title*/
What I tried
I follow video to make the whole app in another language.
In pubspec.yaml:
dependencies:
flutter:
sdk: flutter
flutter_localizations:
sdk: flutter
intl: ^0.17.0
#...
flutter:
generate: true
In the main:
supportedLocales: L10n.all,
Created L10n that look like this:
import 'package:flutter/material.dart';
class L10n {
static final all = [
const Locale('en'),
const Locale('ar'),
const Locale('hi'),
const Locale('es'),
const Locale('de'),
];
}
Then I realize this was not my issues I don't want to make the whole app in another language I just want to make the text filed accept Arabic.

Answer 1

I use translator pachege
final translator = GoogleTranslator();
final input = "Здравствуйте. Ты в порядке?";
translator.translate(input, from: 'ru', to: 'en').then(print);
// prints Hello. Are you okay?
var translation = await translator.translate("Dart is very cool!", to:
'pl');
print(translation);
// prints Dart jest bardzo fajny!
print(await "example".translate(to: 'pt'));