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Widget get _buildAgreeToTermsField {
  // TODO 8: Wrap the Column with a FormField<bool>
  return Column(
    children: <Widget>[
      Row(
        children: <Widget>[
          Checkbox(
            value: _agree,
            onChanged: (bool val) => setState(() {
              _agree = val;

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String _validatePassword(String pass1) {
  // 1
  RegExp hasUpper = RegExp(r'[A-Z]');
  RegExp hasLower = RegExp(r'[a-z]');
  RegExp hasDigit = RegExp(r'\d');
  RegExp hasPunct = RegExp(r'[!@#\$&*~-]');
  // 2
  if (!RegExp(r'.{8,}').hasMatch(pass1))
    return 'Passwords must have at least 8 characters';
  // 3

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// TODO 5: Add onSaved and validator methods
// 1
onSaved: (String val) => _loginObject['email'] = val,
// 2
validator: _validateEmail,

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String _validateEmail(String email) {
  // 1
  RegExp regex = RegExp(r'\w+@\w+\.\w+'); // translates to word@word.word
  // 2
  if (email.isEmpty)
    return 'We need an email address';
  else if (!regex.hasMatch(email))
    // 3
    return "That doesn't look like an email address";
  else

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void _doRegister() {
  // TODO 3: Add validation and saving here
  // 1
  if (_key.currentState.validate()) {
    // Commit the field values to their variables
    // 2
    _key.currentState.save();
    // 3
    print("""
      The user has registered with an email address of '${_loginObject['email']}'

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void _doRegister() {
  // TODO 3: Add validation and saving here
  print("""
    The user has registered with an email address of '${_loginObject['email']}'
    and a password of '${_loginObject['password']}'
  """);
}

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body: Form(
  key: _key, // ← Add this line
  child: Container(

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// TODO 2: Add a GlobalKey declaration
GlobalKey<FormState> _key = GlobalKey<FormState>();

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// TODO 2: Add a GlobalKey

@override
Widget build(BuildContext context) {