Как заставить мой код работать с LoginActivity.java

Получение ошибок в setonclicklistener и View object

     public class LoginActivity extends AppCompatActivity {
       @Override
       protected void onCreate(Bundle savedInstanceState) {
                  super.onCreate(savedInstanceState);
                  setContentView(R.layout.activity_login);

            final TextView etUsername= (TextView) findViewById(R.id.etUsername);
            final TextView etPassword= (TextView) findViewById(R.id.etPassword);

            final Button bLogin = (Button) findViewById(R.id.bLogin);
            final TextView registerLink = (TextView) findViewById(R.id.tvRegisterHere);

            registerLink.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Intent registerIntent = new Intent(LoginActivity.this, RegisterActivity.class);
                    LoginActivity.this.startActivity(registerIntent);

                        ImageView myimageview =(ImageView) findViewById(R.id.myimageview);
                        myimageview.setImageResource(R.drawable.farm1);
                }
            }

            );

        }