String.xml에서

<string-array> 태그로 배열 만들어주고

소스코드는

public class phonelist extends Activity{ 
 
 ListView list = (ListView)findViewById(R.id.list);
// ArrayAdapter<CharSequence> adapter ;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.phonelist);
   
        ArrayAdapter<CharSequence> adapter =
          ArrayAdapter.createFromResource(this, R.array.str_phone, android.R.layout.simple_list_item_1);
      
        list.setAdapter(adapter);     
        list.setOnItemClickListener(listener);
    }
   
    private OnItemClickListener listener = new OnItemClickListener() {
     public void onItemClick(AdapterView<?> parentView, View v, int position, long id){
      if(position == 0){
       Toast.makeText(phonelist.this, "안녕", Toast.LENGTH_SHORT).show();
      }
     }
 };
}

대충 이렇습니다

그런데 강제종료 현상이 일어나는데 왜이럴까요 ㅠㅠ?

로그도 올립니다

08-14 11:56:49.664: E/AndroidRuntime(469): FATAL EXCEPTION: main
08-14 11:56:49.664: E/AndroidRuntime(469): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.seedroid.samsung/com.seedroid.samsung.phonelist}: java.lang.NullPointerException
08-14 11:56:49.664: E/AndroidRuntime(469):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1569)
08-14 11:56:49.664: E/AndroidRuntime(469):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
08-14 11:56:49.664: E/AndroidRuntime(469):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
08-14 11:56:49.664: E/AndroidRuntime(469):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
08-14 11:56:49.664: E/AndroidRuntime(469):  at android.os.Handler.dispatchMessage(Handler.java:99)
08-14 11:56:49.664: E/AndroidRuntime(469):  at android.os.Looper.loop(Looper.java:123)
08-14 11:56:49.664: E/AndroidRuntime(469):  at android.app.ActivityThread.main(ActivityThread.java:3683)
08-14 11:56:49.664: E/AndroidRuntime(469):  at java.lang.reflect.Method.invokeNative(Native Method)
08-14 11:56:49.664: E/AndroidRuntime(469):  at java.lang.reflect.Method.invoke(Method.java:507)
08-14 11:56:49.664: E/AndroidRuntime(469):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
08-14 11:56:49.664: E/AndroidRuntime(469):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
08-14 11:56:49.664: E/AndroidRuntime(469):  at dalvik.system.NativeStart.main(Native Method)
08-14 11:56:49.664: E/AndroidRuntime(469): Caused by: java.lang.NullPointerException
08-14 11:56:49.664: E/AndroidRuntime(469):  at android.app.Activity.findViewById(Activity.java:1647)
08-14 11:56:49.664: E/AndroidRuntime(469):  at com.seedroid.samsung.phonelist.<init>(phonelist.java:14)
08-14 11:56:49.664: E/AndroidRuntime(469):  at java.lang.Class.newInstanceImpl(Native Method)
08-14 11:56:49.664: E/AndroidRuntime(469):  at java.lang.Class.newInstance(Class.java:1409)
08-14 11:56:49.664: E/AndroidRuntime(469):  at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
08-14 11:56:49.664: E/AndroidRuntime(469):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1561)
08-14 11:56:49.664: E/AndroidRuntime(469):  ... 11 more