IME 기본 설정을 시작할 때 Null 포인터 예외

Question

Google 샘플 코드를 사용하여 소프트 키보드를 만들고 키보드의 키 스타일을 변경할 수있는 설정 환경을 구현하려고합니다. Input 메서드를 호출 할 때 Preference Activity (샘플 코드에서 편집되지 않음) null 포인터 예외가 발생합니다.

//show settings menu on click of menu key 
ImePreferences p = new ImePreferences(); 
Intent i = p.getIntent(); 
startActivity(i); 

내 ImePreference입니다.

public class ImePreferences extends PreferenceActivity { 

/** 
* Adds intent extras so fragment opens 
*/ 
@Override 
public Intent getIntent() { 
    final Intent modIntent = new Intent(super.getIntent()); 
    modIntent.putExtra(EXTRA_SHOW_FRAGMENT, Settings.class.getName()); 
    modIntent.putExtra(EXTRA_NO_HEADERS, true); 
    return modIntent; 
} 


@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    // We overwrite the title of the activity, as the default one is "Voice Search". 
    setTitle(R.string.IME_settings); 
} 


public static class Settings extends InputMethodSettingsFragment { 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setInputMethodSettingsCategoryTitle(R.string.language_selection_title); 
     setSubtypeEnablerTitle(R.string.select_language); 

     // Load the preferences from an XML resource 
     addPreferencesFromResource(R.xml.ime_preferences); 
    } 
} 

}

은 여기 내 로그는이 서비스로 키보드를 구축 처음 메신저입니다 일어나는 이유

07-09 13:36:29.577: E/AndroidRuntime(19994): FATAL EXCEPTION: main 
07-09 13:36:29.577: E/AndroidRuntime(19994): java.lang.NullPointerException 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.content.Intent.<init>(Intent.java:3217) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at orsto.board.orstoboardv3.ImePreferences.getIntent(ImePreferences.java:19) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at orsto.board.orstoboardv3.Orstoboard.onKey(Orstoboard.java:450) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.inputmethodservice.KeyboardView.detectAndSendKey(KeyboardView.java:824) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.inputmethodservice.KeyboardView.onModifiedTouchEvent(KeyboardView.java:1341) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.inputmethodservice.KeyboardView.onTouchEvent(KeyboardView.java:1204) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.View.dispatchTouchEvent(View.java:5553) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2019) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1754) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2019) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1754) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2019) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1754) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2019) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1754) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2019) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1754) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1930) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1389) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.app.Dialog.dispatchTouchEvent(Dialog.java:738) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.inputmethodservice.SoftInputWindow.dispatchTouchEvent(SoftInputWindow.java:75) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1878) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.View.dispatchPointerEvent(View.java:5733) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3104) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2666) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewRootImpl.processInputEvents(ViewRootImpl.java:900) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2675) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.os.Handler.dispatchMessage(Handler.java:99) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.os.Looper.loop(Looper.java:154) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at android.app.ActivityThread.main(ActivityThread.java:4624) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at java.lang.reflect.Method.invokeNative(Native Method) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at java.lang.reflect.Method.invoke(Method.java:511) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576) 
07-09 13:36:29.577: E/AndroidRuntime(19994): at dalvik.system.NativeStart.main(Native Method) 

어떤 생각이며 나를 난처한 상황에 빠진했다.

덕분에 마크

Answer 1

나는 오히려이 같은 의도를 얻을해야한다고 생각 :

Intent i = new Intent(this, ImePreferences.class); 

보다는 :

ImePreferences p = new ImePreferences(); 
Intent i = p.getIntent(); 

this 키워드는 현재 활동을 의미한다. startActivity(i)에 전화하면 ImePreferences 활동을 인스턴스화하는 Android 시스템입니다.