public class RegUserPassClient extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_reg_user_pass_client);

    final Spinner spinner = findViewById(R.id.genderSpinner);
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.genderString, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner.setAdapter(adapter);
    spinner.setOnItemSelectedListener(this);


    final EditText regUserClient= (EditText) findViewById(R.id.regUserClient);
    final EditText regPassClient= (EditText) findViewById(R.id.regPassClient);
    final EditText regClientName = (EditText) findViewById(R.id.registerClientName);
    final EditText regClientNumber = (EditText) findViewById(R.id.registerClientNumber);
    final EditText regClientAddress = (EditText) findViewById(R.id.registerClientAddress);
    final EditText regClientOccupation = (EditText) findViewById(R.id.registerClientOccupation);
    final EditText regClientGender = (EditText) findViewById(R.id.registerClientGender);
    final EditText regClientBirthDate = (EditText) findViewById(R.id.registerClientBirthDate);
    final TextView clientUser = (TextView) findViewById(R.id.clientUserType);
    final Button regClientBtn = (Button) findViewById(R.id.regClient);
    final CheckBox toggle = (CheckBox) findViewById(R.id.checkBoxLog);

    toggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
            if(b){
                regPassClient.setTransformationMethod(HideReturnsTransformationMethod.getInstance());

            }else{
                regPassClient.setTransformationMethod(PasswordTransformationMethod.getInstance());
            }
        }
    });

    regClientBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            final String username = regUserClient.getText().toString();
            final String password = regPassClient.getText().toString();
            final String name = regClientName.getText().toString();
            final String number = regClientNumber.getText().toString();
            final String gender = spinner.toString();
            final String address = regClientAddress.getText().toString();
            final String occupation = regClientOccupation.getText().toString();
            final String birthDate = regClientBirthDate.getText().toString();
            final String userType = clientUser.getText().toString();


            if(!username.isEmpty() && !password.isEmpty() &&
               !name.isEmpty() && !address.isEmpty() &&
               !occupation.isEmpty() && !gender.isEmpty() &&
               !birthDate.isEmpty() && !number.isEmpty()) {

                Response.Listener<String> responseListener = new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        try {
                            JSONObject jsonResponse = new JSONObject(response);
                            boolean success = jsonResponse.getBoolean("success");

                            if (success) {
                                Intent intent = new Intent(RegUserPassClient.this, LoginRegister.class);
                                RegUserPassClient.this.startActivity(intent);
                                Toast.makeText(RegUserPassClient.this,"SuccessFully Registered! Log in your details now!",Toast.LENGTH_LONG).show();

                            } else {
                                AlertDialog.Builder builder = new AlertDialog.Builder(RegUserPassClient.this);
                                builder.setMessage("Username Has already been taken!")
                                        .setNegativeButton("Retry", null)
                                        .create()
                                        .show();
                            }

                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }

                };

                RegUserPassClientRequest registerRequest = new RegUserPassClientRequest(username, password, name, number, gender, address, occupation,  birthDate, userType, responseListener);
                RequestQueue queue = Volley.newRequestQueue(RegUserPassClient.this);
                queue.add(registerRequest);
            }else if(username.isEmpty()){
                regUserClient.setError("Please insert a username");
            }else if(password.isEmpty()){
                regPassClient.setError("Please put your password");
            }else if(name.isEmpty()){
                regClientName.setError("Please input your name");
            }else if(number.isEmpty()){
                regClientNumber.setError("Put your phone number please");
            }else if(address.isEmpty()){
                regClientGender.setError("Please state your gender");
            }else if(occupation.isEmpty()){
                regClientAddress.setError("Please put your address");
            }else if(gender.isEmpty()){
                regClientOccupation.setError("Please state occupation");
            }else if(birthDate.isEmpty()){
                regClientBirthDate.setError("Please select your Birth Date");
            }

        }
    });

}


@Override
public void onItemSelected(AdapterView<?> parent, View view, int i, long l) {
    final String text = parent.getItemAtPosition(i).toString();
    Toast.makeText(parent.getContext(), text, Toast.LENGTH_SHORT).show();
}

@Override
public void onNothingSelected(AdapterView<?> adapterView) {

}