1 Get.put() Get.find()

父界面负责 put 放入 controller
子界面负责 find 取出 controller

import 'package:get/get.dart';
class CountController extends GetxController {
  final count = 0.obs;
  add() => count.value++;
  @override
  void onInit() {
    super.onInit();
    print("onInit");
  }
  @override
  void onClose() {
    super.onClose();
    print("clode");
  }
}

class StateDependencyPutFindView extends StatelessWidget {
  StateDependencyPutFindView({Key? key}) : super(key: key);
  final controller = Get.put<CountController>(CountController());
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Dependency"),
      ),
      body: Center(
        child: Column(
          children: [
            GetX<CountController>(
              init: controller,
              initState: (_) {},
              builder: (_) {
                return Text('value -> ${_.count}');
              },
            ),
            Divider(),
            // 按钮
            ElevatedButton(
              onPressed: () {
                controller.add();
              },
              child: Text('add'),
            ),
            // 跳转
            ElevatedButton(
              onPressed: () {
                Get.to(() => NextPageView());
              },
              child: Text('next page'),
            ),
          ],
        ),
      ),
    );
  }
}

class NextPageView extends StatelessWidget {
  NextPageView({Key? key}) : super(key: key);
  final controller = Get.find<CountController>();
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("NextPage"),
      ),
      body: Center(
        child: Column(
          children: [
            GetX<CountController>(
              init: controller,
              initState: (_) {},
              builder: (_) {
                return Text('value -> ${_.count}');
              },
            ),
            Divider(),
          ],
        ),
      ),
    );
  }
}

2 Get.lazyput() GetView

lazyput, 会先注册回调函数, 当调用Get.find()时自动触发该回调, put一个controller实例

同上

import 'package:get/get.dart';
import 'controller.dart';
class DependencyLazyPutBinding implements Bindings {
  @override
  void dependencies() {
    Get.lazyPut<CountController>(() => CountController());
  }
}

class StateDependencyLazyPutView extends StatelessWidget {
  StateDependencyLazyPutView({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Dependency - LazyPut"),
      ),
      body: Center(
        child: Column(
          children: [
            GetX<CountController>(
              init: Get.find<CountController>(),
              initState: (_) {},
              builder: (_) {
                return Text('value -> ${_.count}');
              },
            ),
            Divider(),
            // 按钮
            ElevatedButton(
              onPressed: () {
                Get.find<CountController>().add();
              },
              child: Text('add'),
            ),
            // 跳转
            ElevatedButton(
              onPressed: () {
                Get.to(NextPageView());
              },
              child: Text('Next GetView Page'),
            ),
          ],
        ),
      ),
    );
  }
}

class NextPageView extends GetView<CountController> {
  NextPageView({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("GetView Page"),
      ),
      body: Center(
        child: Column(
          children: [
            Obx(() => Text('value -> ${controller.count}')),
            Divider(),
            // 按钮
            ElevatedButton(
              onPressed: () {
                controller.add();
              },
              child: Text('add'),
            ),
          ],
        ),
      ),
    );
  }
}

GetPage(
  name: AppRoutes.Lazy,
  page: () => StateDependencyLazyPutView(),
  binding: DependencyLazyPutBinding()
)