Flutter Custom TextField | Focus Node, Next Node and onTap Function

Flutter Custom TextField | Focus Node, Next Node and onTap Function

    Flutter Custom TextField includes features like focus node, next node, onTap function, 

    void main() async {
    class MyApp extends StatelessWidget {
      // This widget is the root of your application.
      Widget build(BuildContext context) {
        final TextEditingController _addressController = TextEditingController();
        final TextEditingController _contactPersonNameController = TextEditingController();
        final TextEditingController _contactPersonNumberController = TextEditingController();
        final FocusNode _addressNode = FocusNode();
        final FocusNode _nameNode = FocusNode();
        final FocusNode _numberNode = FocusNode();
        return MaterialApp(
          debugShowCheckedModeBanner: false,
          title: 'Flutter Demo',
          theme: ThemeData(
            primaryColor: Colors.blue,
            fontFamily: "Lato",
          home: Scaffold(
            backgroundColor: Colors.white,
            body: Center(
            child:  Column(
              mainAxisAlignment: MainAxisAlignment.center,
              crossAxisAlignment: CrossAxisAlignment.center,
              children: [
                  hintText: 'Delivery address',
                  inputType: TextInputType.streetAddress,
                  focusNode: _addressNode,
                  nextFocus: _nameNode,
                  controller: _addressController,
                  hintText: 'Person name',
                  inputType: TextInputType.name,
                  focusNode: _nameNode,
                  nextFocus: _numberNode,
                  controller: _contactPersonNameController,
    final robotoRegular = TextStyle(
      fontFamily: 'Roboto',
      fontWeight: FontWeight.w400,
      fontSize: 15,
    class MyTextField extends StatefulWidget {
      final String hintText;
      final TextEditingController controller;
      final FocusNode focusNode;
      final FocusNode nextFocus;
      final TextInputType inputType;
      final TextInputAction inputAction;
      final int maxLines;
      final bool isPassword;
      final VoidCallback? onTap;
      final VoidCallback? onChanged;
      final VoidCallback? onSubmit;
      final bool isEnabled;
      final TextCapitalization capitalization;
      final Color? fillColor;
      final bool autoFocus;
      final GlobalKey<FormFieldState<String>>? key;
          {this.hintText = '',
            required this.controller,
            required this.focusNode,
            required this.nextFocus,
            this.isEnabled = true,
            this.inputType = TextInputType.text,
            this.inputAction = TextInputAction.next,
            this.maxLines = 1,
            this.capitalization = TextCapitalization.none,
            this.isPassword = false,
            this.autoFocus = false,
      _MyTextFieldState createState() => _MyTextFieldState();
    class _MyTextFieldState extends State<MyTextField> {
      bool _obscureText = true;
      Widget build(BuildContext context) {
        return TextField(
          key: widget.key,
          maxLines: widget.maxLines,
          controller: widget.controller,
          focusNode: widget.focusNode,
          style: robotoRegular,
          textInputAction: widget.inputAction,
          keyboardType: widget.inputType,
          cursorColor: Theme.of(context).primaryColor,
          textCapitalization: widget.capitalization,
          enabled: widget.isEnabled,
          autofocus: widget.autoFocus,
          //onChanged: widget.isSearch ? widget.languageProvider.searchLanguage : null,
          obscureText: widget.isPassword ? _obscureText : false,
         // inputFormatters: widget.inputType == TextInputType.phone ? <TextInputFormatter>[FilteringTextInputFormatter.allow(RegExp('[0-9+]'))] : null,
          decoration: InputDecoration(
            hintText: widget.hintText,
            isDense: true,
            filled: true,
            fillColor: widget.fillColor != null ? widget.fillColor : Theme.of(context).cardColor,
            border: OutlineInputBorder(borderRadius: BorderRadius.circular(10), borderSide: BorderSide.none),
            hintStyle: robotoRegular.copyWith(color: Theme.of(context).hintColor),
            suffixIcon: widget.isPassword ? IconButton(
              icon: Icon(_obscureText ? Icons.visibility_off : Icons.visibility, color: Theme.of(context).hintColor.withOpacity(0.3)),
              onPressed: _toggle,
            ) : null,
          onTap: widget.onTap,
          onSubmitted: (text) => widget.nextFocus != null ? FocusScope.of(context).requestFocus(widget.nextFocus)
              : widget.onSubmit != null ? widget.onSubmit! : null,
         // onChanged: widget.onChanged,
      void _toggle() {
        setState(() {
          _obscureText = !_obscureText;


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