prefManager=new PrefManager(this);


        etUsername=findViewById(R.id.et_username);
        etPassword=findViewById(R.id.et_password);
        btnLogin=findViewById(R.id.btn_login);

        //Cek Login User
        //Jika user pernah login

        if (!prefManager.getCekLogin()){
            startActivity(new Intent(this,ListActivity.class));
            finish();
        }

        btnLogin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                String username=etUsername.getText().toString();
                String password=etPassword.getText().toString();

                //Cek Username dan Password
                if (!username.equals(prefManager.getUsername())&&!password.equals(prefManager.getPassword())){

                    Toast.makeText(getApplicationContext(),"Password dan Username Salah ",Toast.LENGTH_LONG).show();

                }
                else if (!username.equals(prefManager.getUsername())||!password.equals(prefManager.getPassword())){

                    Toast.makeText(getApplicationContext(),"Password atau Username Salah ",Toast.LENGTH_LONG).show();

                }else{
                    prefManager.setCekLogin(PrefManager.CEK_LOGIN,true);
                    startActivity(new Intent(getApplicationContext(),ListActivity.class));
                    finish();

                }

            }
        });