AFinal一个很基础问题 click里的方法不执行

click=""里面的方法不执行啊

package com.elvis.releaseresource;
 
import net.tsz.afinal.FinalActivity;
import net.tsz.afinal.annotation.view.ViewInject;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
 
public class LoginActivity extends FinalActivity
{
    @ViewInject(id=R.id.loginatv_username)EditText username;
    @ViewInject(id=R.id.loginatv_pwd)EditText pwd;
    @ViewInject(id=R.id.loginatv_btn_signin, click="viewClick")Button btnSignIn;
    @ViewInject(id=R.id.loginatv_btn_signup, click="viewClick")Button btnSignUp;
 
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
    }
 
    public void viewClick(View v)
    {
        switch(v.getId())
        {
        case R.id.loginatv_btn_signin:
            Toast.makeText(LoginActivity.this, "login", 50).show();
            break;
        case R.id.loginatv_btn_signup:
            Toast.makeText(LoginActivity.this, "register", 50).show();
            break;
        }
    }
}