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Android - Custom Date style - SimpleDateFormat - app crash

<PreferenceCategory android:title="StatusBar Date">

    <CheckBoxPreference android:title="Custom date" android:key="custom_date" android:summary="Turn on to enable custom date format" android:defaultValue="false" />

    <EditTextPreference android:title="Notification bar date format" android:key="custom_format" android:dependency="custom_date" />

</PreferenceCategory>

       

private void updateSettings()

  {

    boolean bool;

    if (Settings.System.getInt(mContext.getContentResolver(), "custom_date", 1) != 1)

      bool = false;

    else

      bool = true;

    mCustomdate = bool;

  }

 

  private String getCustomDateformat()

  {

    return Settings.System.getString(mContext.getContentResolver(), "custom_format");

  }

 

  private final void updateClock()

  {

    Object localObject = new Date();

    getResources();

    if (!mCustomDate)

      localObject = android.text.format.DateFormat.getDateFormat(mContext).format((Date)localObject);

    else

      localObject = new SimpleDateFormat(getCustomDateformat()).format((Date)localObject);

    setText((CharSequence)localObject);

  }

       

java.lang.NullPointerException

 

java.text.SimpleDateFormat.validatePattern(SimpleDateFormat.java:286)

       

286        final int patternLength = template.length();