onClick not working

[pavinthan]

...
    @BindView(R.id.input_email) EditText _emailText;
    @BindView(R.id.input_password) EditText _passwordText;
    @BindView(R.id.btn_login) Button _loginButton;
    @BindView(R.id.link_signup) TextView _signupLink;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        ButterKnife.bind(this);

        _loginButton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                Log.d(TAG, "Login onClick");
                login();
            }
        });
....

I did not see any log Login onClick, please help me (edited)