DatePickerDialog Fragment Crashing с помощью TabsAdapter и ActionBarSherlock

Question

Я использую адаптер вкладок с фрагментами и ActionBarSherlock. Я хочу использовать диалог datepicker в одном из моих фрагментов, вызывается из события onClick на одной из кнопок. Приложение сбой, когда я нажимаю на любую из кнопок, чтобы вызвать DatePickerDialog. У меня нет первой подсказки, что не так.

Я получил код из этого ответа: Show dialog from fragment?

и этот ответ: getSupportFragmentManager() is undefined

Вот фрагмент с кнопки, щелкнули, чтобы получить DatePickerDialog:

public class ReportsFragment extends SherlockDialogFragment { 

    //Buttons to call up DatePickerDialog 
    Button btnStartDate; 
    Button btnEndDate; 

    static String TAG = "ReportsFragment"; 
    private DataBaseHelper myDbHelper; 
    //beginning and start dates to display 
    protected Calendar StartDate; 
    protected Calendar EndDate; 

    //factory method 
    static ReportsFragment newInstance() { 
     // Create a new fragment instance 
     ReportsFragment reportFrag = new ReportsFragment(); 

    return reportFrag; 
    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 
     Log.d(TAG, "onCreateView"); 

     View distance =inflater.inflate(R.layout.reports_frag, container, false); 

    btnStartDate = (Button) distance.findViewById(R.id.btnStartDate); 
     btnEndDate = (Button)distance.findViewById(R.id.btnEndDate); 
     btnSendEmail = (Button)distance.findViewById(R.id.btnSendEmail); 
     myDbHelper = new DataBaseHelper(getActivity()); 
     CalcDate(); 
    return distance; 
    } 



    @Override 
    public void onActivityCreated(Bundle savedInstanceState) { 

     Log.d(TAG, "onActivityCreated"); 
     super.onActivityCreated(savedInstanceState); 
     //Call up datepicker dialog for StartDate 
     btnStartDate.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 

       DatePickerDialogFragment df = DatePickerDialogFragment.newInstance(true); 
       FragmentTransaction ft = getSherlockActivity().getSupportFragmentManager().beginTransaction(); 

       df.show(ft, "dialog"); 

      } 

     }); 
     //Call up datepicker dialog for EndDate 
     btnEndDate.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 

       DatePickerDialogFragment df = DatePickerDialogFragment.newInstance(false); 
       FragmentTransaction ft = getSherlockActivity().getSupportFragmentManager().beginTransaction(); 
       df.show(ft, "dialog"); 

      } 

     }); 
    } 


    public Dialog onCreateDialog(Bundle SavedInstanceState) { 

     return null; 
    } 


    //Figures out which dates to display 
    protected void CalcDate() { 
     StartDate = new GregorianCalendar(); 
     EndDate = new GregorianCalendar(); 
     Log.d(TAG, "We're here"); 
     //figure out which year to show. 
     //starting date will always be less than "now" 
     mGPSDC = myDbHelper.GetClosestEntryToNow(); 
     if ((mGPSDC.getStartLatitude() != 0) && (mGPSDC.getEndLatitude() != 0)) { 
      Log.d("Start Lat ", "value =" + mGPSDC.getStartLatitude()); 
      Log.d("Start Long ", "value =" + mGPSDC.getStartLongitude()); 

      StartDate.setTimeInMillis(mGPSDC.getStartUnixEpoch() * 1000); 
      Log.d("Start Year", "value =" + StartDate.get(Calendar.YEAR)); 

     } 

     int Year = StartDate.get(Calendar.YEAR); 
     //set to January 1 of the closest entry date, or this year if there is no entries 
     StartDate.set(Year, 0, 1); 
     StartDate.set(Calendar.MINUTE, 0); 
     StartDate.set(Calendar.HOUR, 0); 
     //set to December 31 of the closest entry date year or this year if there is no entries 
     EndDate.set(Year+1, 0, 1); 
     EndDate.set(Calendar.HOUR, 0); 
     EndDate.set(Calendar.MINUTE, 0); 

    } 
} 

Здесь представляет собой код для DatePickerDialogFragment:

public class DatePickerDialogFragment extends ReportsFragment implements DatePickerDialog.OnDateSetListener { 

static boolean mStartOrEnd = true; 
    private int mLMPYear; 
    private int mLMPMonth; 
    private int mLMPDay; 

public static DatePickerDialogFragment newInstance() { 
    DatePickerDialogFragment d = new DatePickerDialogFragment(); 
    return d; 
} 

/* 
    * Param: StartOrEnd true if StartDate, false if EndDate 
    */ 
    public static DatePickerDialogFragment newInstance(boolean StartOrEnd) { 
    mStartOrEnd = StartOrEnd; 
    DatePickerDialogFragment d = new DatePickerDialogFragment(); 
     return d; 
    } 




public Dialog onCreateDialog(Bundle savedInstanceState) { 
    CalcDate(); 
    Calendar theDate = new GregorianCalendar(); 
    theDate = mStartOrEnd ? StartDate : EndDate; 
    mLMPYear = theDate.get(Calendar.YEAR); 
    mLMPMonth = theDate.get(Calendar.MONTH); 
    mLMPDay = theDate.get(Calendar.DAY_OF_MONTH); 
    return new DatePickerDialog(getActivity(), this, mLMPYear, mLMPMonth, mLMPDay); 
    } 

public void onDateSet(DatePicker view, int year, int month, int day) { 
    mLMPYear = year; 
    mLMPMonth = month; 
    mLMPDay = day; 
    } 
} 

Вот мой LogCat:

05-15 17:32:42.546: E/AndroidRuntime(30069): Uncaught handler: thread main exiting due to uncaught exception 
05-15 17:32:42.546: E/AndroidRuntime(30069): android.util.AndroidRuntimeException: requestFeature() must be called before adding content 
05-15 17:32:42.546: E/AndroidRuntime(30069): at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:172) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at com.android.internal.app.AlertController.installContent(AlertController.java:198) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.app.AlertDialog.onCreate(AlertDialog.java:251) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.app.Dialog.dispatchOnCreate(Dialog.java:308) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.app.Dialog.show(Dialog.java:225) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.app.DatePickerDialog.show(DatePickerDialog.java:129) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.support.v4.app.DialogFragment.onStart(DialogFragment.java:385) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at com.webnation.gpsdistancetrackingemail.ReportsFragment.onStart(ReportsFragment.java:198) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.support.v4.app.Fragment.performStart(Fragment.java:1336) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:907) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1083) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:635) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1431) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:420) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.os.Handler.handleCallback(Handler.java:587) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.os.Handler.dispatchMessage(Handler.java:92) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.os.Looper.loop(Looper.java:123) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at android.app.ActivityThread.main(ActivityThread.java:4363) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at java.lang.reflect.Method.invokeNative(Native Method) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at java.lang.reflect.Method.invoke(Method.java:521) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
05-15 17:32:42.546: E/AndroidRuntime(30069): at dalvik.system.NativeStart.main(Native Method) 

Answer 1

Я угробил весь процесс вызова другого фрагмента, так что теперь мой ReportsFragment onActivityCreated выглядит следующим образом:

@Override 
public void onActivityCreated(Bundle savedInstanceState) { 

    Log.d(TAG, "onActivityCreated"); 
    super.onActivityCreated(savedInstanceState); 
    SetTextDates(); 

    btnStartDate.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() { 

       public void onDateSet(DatePicker view, int year, 
         int monthOfYear, int dayOfMonth) { 
        int mYear = year; 
        int mMonth = monthOfYear; 
        int mDay = dayOfMonth; 
        //updateDisplay(); 
       } 
      }; 

      DatePickerDialog d = new DatePickerDialog(getActivity(), 
        DialogFragment.STYLE_NO_TITLE, mDateSetListener, StartDate.get(Calendar.YEAR), StartDate.get(Calendar.MONTH), StartDate.get(Calendar.DAY_OF_MONTH)); 
      d.show(); 

     } 

    }); 

    btnEndDate.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 

      DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() { 

       public void onDateSet(DatePicker view, int year, 
         int monthOfYear, int dayOfMonth) { 
        int mYear = year; 
        int mMonth = monthOfYear; 
        int mDay = dayOfMonth; 
        //updateDisplay(); 
       } 
      }; 

      DatePickerDialog d = new DatePickerDialog(getActivity(), 
        DialogFragment.STYLE_NO_TITLE, mDateSetListener, EndDate.get(Calendar.YEAR), EndDate.get(Calendar.MONTH), EndDate.get(Calendar.DAY_OF_MONTH)); 
      d.show(); 

     } 

    }); 
}