bool download=false; setState(() {download=true;});download==true?Text("new"):("old");

How to write this code by using get X without stateful widget.

Thank you;

CodePudding user response：

first define a controller class

class ControllerClass extends GetxController{
 RxBool download == false.obs;
}

in your stateless class you can state a set with two ways

inject a controller first like this

 ControllerClass controller = Get.put(ControllerClass());

First:

    Obx(()=>controller.download.value == true?Text("new"):("old"))

in some function

downloadCondition(){
   controller.download.value == // true or false;

}

Second:

    GetBuilder<ControllerClass>(builder: (controller){ return 
     controller.download.value == true? 
    Text("new"):("old"));}

in some function

downloadCondition(){
   controller.download.value == // true or false;
 controller.update();
}

CodePudding user response：

try this first create a controller:

 class ControllerName extends GetxController {
    final download = false.obs;
    
       yourFunc(){
        download(!download.value);
   }
    }

i usually used obx then

    // You can also put your controller above on stateful or inside depends on you
       // final controller = Get.put(ControllerName());
        class YourPageName extends StatelessWidget {

       YourPageName({Key? key}) : super(key: key);

     final controller = Get.put(ControllerName());

      @override
      Widget build(BuildContext context) {
        return Obx(()=>
            Scaffold(
           body: SafeArea(
             child: Column(
                 children:[
                      Text(controller.download.isFalse ? "Old" : "New"),
                      SizedBox(
                      height: 60,
                     width: 120,
                     child: ElevatedButton(
                    style: ElevatedButton.styleFrom(
                   primary: Colors.red,
                child: Center(
                   child: Text("Click")
                       ),
                     onPressed: ()=>controller.yourFunc(),
                         ),
                        ),
                 ]
                ),
            ),
          ),
          );
       }
        
        }