Fragment_step_1

public class Fragment_step_1 extends Fragment {
    public pingan_hkidValidate class_checkHKID;
    RelativeLayout personal;
    TextInputLayout floatingName, floatingHKID, floatingEmail, floatingTel;
    EditText name, getEmail, HKIDNumber, phone;
    String check_digit, check_IDchar, check_IDNum;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        personal = (RelativeLayout)inflater.inflate(R.layout.reg_step_personal, container, false);
        name = (EditText)personal.findViewById(R.id.txtFullName);
        getEmail = (EditText)personal.findViewById(R.id.txtEmail);
        HKIDNumber = (EditText)personal.findViewById(R.id.txtHKIDNumber);
        phone = (EditText)personal.findViewById(R.id.txtPhoneNumber);
        class_checkHKID = new pingan_hkidValidate();
        floatingName = (TextInputLayout)personal.findViewById(R.id.til_et_full_name);
        floatingHKID = (TextInputLayout)personal.findViewById(R.id.til_et_HKID);
        floatingEmail = (TextInputLayout)personal.findViewById(R.id.til_et_email);
        floatingTel = (TextInputLayout)personal.findViewById(R.id.til_et_tel);

        name.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

            @Override
            public void afterTextChanged(Editable editable) {
                if("".trim().equals(name.getText().toString())){
                    floatingName.setError("Your Name is required.");
                } else {
                    floatingName.setErrorEnabled(false);
                    floatingName.setError(null);
                }
            }
        });


        getEmail.addTextChangedListener(new TextWatcher(){
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

            @Override
            public void afterTextChanged(Editable editable) {
                if (!getEmail.getText().toString().trim().matches("^\\S+@\\S+\\.\\S+$") || "".trim().equals(getEmail.getText().toString())) {
                    floatingEmail.setError("The email format is invalid.");
                } else {
                    floatingEmail.setErrorEnabled(false);
                    floatingEmail.setError(null);
                }
            }
        });

        HKIDNumber.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

            @Override
            public void afterTextChanged(Editable editable) {
                HKIDNumber.setOnFocusChangeListener(new View.OnFocusChangeListener(){
                    @Override
                    public void onFocusChange(View View, boolean isFocus) {
                        if (!isFocus) {
                            //Log.e("ID", strIDNum);
                            if ("".trim().equals(HKIDNumber.getText().toString().trim())) {
                                floatingHKID.setErrorEnabled(true);
                                floatingHKID.setError("HKID Number is required.");
                            } else {
                                check_IDchar = HKIDNumber.getText().toString().trim().substring(0, 1);
                                check_IDNum = HKIDNumber.getText().toString().trim().substring(1, HKIDNumber.getText().toString().trim().length() - 1);
                                check_digit = HKIDNumber.getText().toString().trim().substring(HKIDNumber.getText().toString().trim().length() - 1);
                                if (!class_checkHKID.validate(check_IDchar, check_IDNum, check_digit)) {
                                    floatingHKID.setErrorEnabled(true);
                                    floatingHKID.setError("Your HKID Number is invalid.");
                                } else {
                                    floatingHKID.setErrorEnabled(false);
                                    floatingHKID.setError(null);
                                }
                            }
                        }
                    }
                });
            }
        });

        phone.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

            @Override
            public void afterTextChanged(Editable editable) {
                if("".trim().equals(phone.getText().toString()) || phone.getText().toString().trim().length() < 8){
                    floatingTel.setError("Phone Number is required / must be 8 in length.");
                } else {
                    floatingTel.setErrorEnabled(false);
                    floatingTel.setError(null);
                }
            }
        });
        return personal;
    }
}