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();