android 按menu鍵菜單不會彈出來 沒反應

代碼如下


package com.example.administrator.logintest;

import android.app.Activity;
import android.content.DialogInterface;
import android.support.v7.app.AppCompatActivity;
            import android.os.Bundle;
            import android.view.Menu;
            import android.view.MenuItem;
            import android.view.View;
            import android.view.Window;
            import android.widget.Button;
            import android.widget.Toast;

            public class login extends Activity {

                @Override
                protected void onCreate(Bundle savedInstanceState) {
                    super.onCreate(savedInstanceState);
                    requestWindowFeature(Window.FEATURE_NO_TITLE);
                    setContentView(R.layout.activity_login);
                    Button button1=(Button) findViewById(R.id.button);
                    button1.setOnClickListener(new View.OnClickListener(){
                        @Override
            public void onClick(View v){
                Toast.makeText(login.this,"You clicked Button",Toast.LENGTH_SHORT).show();
            }
        });
    }
    public boolean onCreatOptionMenu(Menu menu){
        getMenuInflater().inflate(R.menu.amenu,menu);
        Toast.makeText(this,"You clicked",Toast.LENGTH_SHORT).show();
        return true;
    }
    public boolean onOptionItemSelected(MenuItem item){
        switch (item.getItemId()){
            case R.id.add_item:
                Toast.makeText(this,"You clicked Add",Toast.LENGTH_SHORT);
                break;
            case R.id.remove_item:
                Toast.makeText(this,"You clicked Remove",Toast.LENGTH_SHORT);
                break;
            default:
        }
        return true;
    }
}