public ChooserDialog withResources(@StringRes int titleRes, @StringRes int okRes, @StringRes int cancelRes) {
        this._titleRes = titleRes;
        this._okRes = okRes;
        this._negativeRes = cancelRes;
        return this;
    }
called if {@link KeyEvent#KEYCODE_BACK} is caught,
and current directory is the root of Primary/SdCard storage.
android-file-chooser/src/main/java/com/obsez/android/lib/filechooser/ChooserDialog.java