protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login_siswa);

        sessionManager = new SessionManager(this);

        final MediaPlayer mp = MediaPlayer.create(this, R.raw.button);

        email = findViewById(R.id.email);
        pass = findViewById(R.id.passwd);

        bg_login = findViewById(R.id.button);
        buttonBack = findViewById(R.id.buttonBack);
        buttonDaftar = findViewById(R.id.buttonDaftar);

        buttonBack.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mp.start();
                Intent i = new Intent(LoginSiswa.this, MenuUsers.class);
                startActivity(i);
            }
        });

        bg_login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mp.start();

                String mEmail = email.getText().toString().trim();
                String mPass = pass.getText().toString().trim();

                if (!mEmail.isEmpty() || !mPass.isEmpty()){
                    login(mEmail, mPass);
                } else {
                    email.setError("Please insert Email");
                    pass.setError("Please insert Password");
                }
            }
        });

        buttonDaftar.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mp.start();
                Intent i = new Intent(LoginSiswa.this, TambahSiswa.class);
                startActivity(i);
            }
        });

    }

    public void login(final String email_siswa, final String password) {

        final ProgressDialog progressDialog = new ProgressDialog(this);
        progressDialog.setMessage("Reading...");
        progressDialog.show();

        StringRequest stringRequest = new StringRequest(Request.Method.POST, URL_LOGIN,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        progressDialog.dismiss();
                        try {

                            JSONObject jsonObject = new JSONObject(response);
                            String success = jsonObject.getString("success");
                            JSONArray jsonArray = jsonObject.getJSONArray("login");

                            if(success.equals("1")){

                                for (int i = 0; i < jsonArray.length(); i++){

                                    JSONObject object = jsonArray.getJSONObject(i);

                                    String email_siswa = object.getString("email_siswa");
                                    String nama_siswa = object.getString("nama_siswa");
                                    String id_siswa = object.getString("id_siswa");

                                    sessionManager.createSession(nama_siswa, email_siswa, id_siswa);

                                    Intent intent = new Intent(LoginSiswa.this, MenuAwal.class);
                                    intent.putExtra("nama_siswa", nama_siswa);
                                    intent.putExtra("email_siswa", email_siswa);
                                    startActivity(intent);


                                }
                            }

                        } catch (JSONException e){
                            e.printStackTrace();
                            progressDialog.dismiss();
                            Toast.makeText(LoginSiswa.this,"email atau password anda inputkan salah", Toast.LENGTH_SHORT).show();

                        }
                    }
                },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        progressDialog.dismiss();
                        Toast.makeText(LoginSiswa.this, "Connection Failed or Password Anda Salah " + error.toString(), Toast.LENGTH_SHORT).show();
                    }
                })
        {
            @Override
            protected Map<String, String> getParams() throws AuthFailureError {

                Map<String, String> params = new HashMap<>();
                params.put("email_siswa", email_siswa);
                params.put("password", password);
                return params;
            }
        };

        RequestQueue requestQueue = Volley.newRequestQueue(this);
        requestQueue.add(stringRequest);
    }