옵션 메뉴가 작동하지 않습니다.

Question

간단한 옵션 메뉴를 확장하려고하는데 코드에 오류가 없지만 앱에서 메뉴 버튼을 클릭해도 아무 일도 일어나지 않습니다. 아래는 내 코드와 메뉴 XML 파일입니다. 미리 감사드립니다.

MainActivity.java :

package com.carouseldemo.main; 

import com.carouseldemo.controls.Carousel; 

import com.carouseldemo.controls.CarouselAdapter; 
import com.carouseldemo.controls.CarouselAdapter.OnItemClickListener; 
import com.carouseldemo.controls.CarouselAdapter.OnItemSelectedListener; 
import com.carouseldemo.controls.CarouselItem; 


import android.app.Activity; 
import android.os.Bundle; 
import android.view.Gravity; 
import android.view.LayoutInflater; 
import android.view.MenuInflater; 
import android.view.Menu; 
import android.view.View; 
import android.widget.TextView; 
import android.widget.Toast; 




public class MainActivity extends Activity { 
    /** Called when the activity is first created. */ 
    @Override 
    public boolean onCreateOptionsMenu(Menu menu){ 
     MenuInflater inflater = getMenuInflater(); 
     inflater.inflate(R.menu.testmenu, menu); 
     return true; 

    } 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     Carousel carousel = (Carousel)findViewById(R.id.carousel); 


     carousel.setOnItemClickListener(new OnItemClickListener(){ 

      public void onItemClick(CarouselAdapter<?> parent, View view, 
        int position, long id) {  

            Toast.makeText(MainActivity.this, 
         String.format("%s has been clicked",  
         ((CarouselItem)view).getName()), 
         Toast.LENGTH_SHORT).show(); 


      } 



     }); 


      carousel.setOnItemSelectedListener(new OnItemSelectedListener(){ 

      public void onItemSelected(CarouselAdapter<?> parent, View view, 
        int position, long id) { 

       final TextView txt = (TextView)(findViewById(R.id.selected_item)); 

       switch(position){ 
       case 0: 
        txt.setText("The cat (Felis catus), also known as the domestic cat or housecat to distinguish it from other felids and felines, is a small, usually furry, domesticated, carnivorous mammal that is valued by humans for its companionship and for its ability to hunt vermin and household pests. Cats have been associated with humans for at least 9,500 years, and are currently the most popular pet in the world. Owing to their close association with humans, cats are now found almost everywhere in the world."); 
        break; 
       case 1: 
        txt.setText("The hippopotamus (Hippopotamus amphibius), or hippo, from the ancient Greek for \"river horse\" (ἱπποπόταμος), is a large, mostly herbivorous mammal in sub-Saharan Africa, and one of only two extant species in the family Hippopotamidae (the other is the Pygmy Hippopotamus.) After the elephant, the hippopotamus is the third largest land mammal and the heaviest extant artiodactyl."); 
        break; 
       case 2: 
        txt.setText("A monkey is a primate, either an Old World monkey or a New World monkey. There are about 260 known living species of monkey. Many are arboreal, although there are species that live primarily on the ground, such as baboons. Monkeys are generally considered to be intelligent. Unlike apes, monkeys usually have tails. Tailless monkeys may be called \"apes\", incorrectly according to modern usage; thus the tailless Barbary macaque is called the \"Barbary ape\"."); 
        break; 
       case 3: 
        txt.setText("A mouse (plural: mice) is a small mammal belonging to the order of rodents. The best known mouse species is the common house mouse (Mus musculus). It is also a popular pet. In some places, certain kinds of field mice are also common. This rodent is eaten by large birds such as hawks and eagles. They are known to invade homes for food and occasionally shelter."); 
        break; 
       case 4: 
        txt.setText("The giant panda, or panda (Ailuropoda melanoleuca, literally meaning \"black and white cat-foot\") is a bear native to central-western and south western China.[4] It is easily recognized by its large, distinctive black patches around the eyes, over the ears, and across its round body. Though it belongs to the order Carnivora, the panda's diet is 99% bamboo."); 
        break; 
       case 5: 
        txt.setText("Rabbits (or, colloquially, bunnies) are small mammals in the family Leporidae of the order Lagomorpha, found in several parts of the world. There are eight different genera in the family classified as rabbits, including the European rabbit (Oryctolagus cuniculus), cottontail rabbits (genus Sylvilagus; 13 species), and the Amami rabbit (Pentalagus furnessi, an endangered species on Amami ÅŒshima, Japan)"); 
        break; 
       } 

      } 

      public void onNothingSelected(CarouselAdapter<?> parent) { 
      } 


     } 
     ); 

    } 

} 

testmenu.xml 파일 :

이 나에게 나는 일식에 안드로이드를 개발하고, 깨끗하고 프로젝트를 재건하기로 수정하고 여러 번 일어날

<?xml version="1.0" encoding="utf-8"?> 

<menu xmlns:android="http://schemas.android.com/apk/res/android"> 
    <item android:id="@+id/item1" android:title="Option A"></item> 
    <item android:id="@+id/item2" android:title="Option B"></item> 
    <item android:id="@+id/item3" android:title="Option C"></item> 
    <item android:id="@+id/item4" android:title="Option D"></item> 


</menu> 

Answer 1

그것은 안드로이드 리소스 파일을 다시 생성하고 UI ID가 올바르게 매핑됩니다.