toggleTheme method

void toggleTheme()

Implementation

void toggleTheme() {
  //var theme = Get.isDarkMode? ThemeData.light(): ThemeData.dark();
  //Get.changeTheme(theme);
  _isBrightnessDark = !_isBrightnessDark;
  sharedPreferences.setBool('isDark', _isBrightnessDark);
  update();
}