Flutter GetX call fetch data only once in the build methode

Question

I have a method called getData() which used to load data from API, and i am displaying data in a separate screen, I have one issue which whenever I navigate to this page it rebuild the whole screen and call the API again and again. PS: I'm using getX Obx to control the UI Question: how to call the function only when new data has added

Answer 1

class CategoryPageBinding extends Bindings {
  @override
  void dependencies() {
    Get.put(CategoryPageController(), permanent: true);
  }
}
 

class CategoryPageController extends GetxController {
  @override
  void onInit() {
    super.onInit();
    getAllCategories();
  }
}