为何在 GetBinding 中使用 Get.create() 导致 Controller 不断重复创建？

Question

在Getbinding中使用Get.create()注入依赖时，会一直不停地创建Controller,(使用断点可以发现一直在执行OnReady和OnInit)

Get.toNamed(Routes.MUSICLIST, arguments: arguments, preventDuplicates: false);

import 'package:get/get.dart';

import '../controllers/musiclist_controller.dart';

class MusiclistBinding extends Bindings {
  @override
  void dependencies() {
    Get.create<MusiclistController>(() => MusiclistController());
  }
}

尝试使用Get.put或Get.lazyput注入依赖就没有问题,但我需要打开多个相同的页面

Answer 1

这个文档有说明：

 /// Creates a new Class Instance [S] from the builder callback[S].
  /// Every time `find<S>()` is used, it calls the builder method to generate
  /// a new Instance [S].
  /// It also registers each `instance.onClose()` with the current
  /// Route `GetConfig.currentRoute` to keep the lifecycle active.
  /// Is important to know that the instances created are only stored per Route.
  /// So, if you call `Get.delete<T>()` the "instance factory" used in this
  /// method (`Get.create<T>()`) will be removed, but NOT the instances
  /// already created by it.
  /// Uses `tag` as the other methods.
  ///
  /// Example:
  ///
  /// ```create(() => Repl());
  /// Repl a = find();
  /// Repl b = find();
  /// print(a==b); (false)```
  void create<S>(InstanceBuilderCallback<S> builder,
          {String? tag, bool permanent = true}) =>
      GetInstance().create<S>(builder, tag: tag, permanent: permanent);

Get.create每次都会创建新的

使用Get.lazyPut 结合 Get.find 来用

Answer 2

原因是使用Get.create()在GetBinding中注入依赖时，每次跳转到相同的页面时，都会创建一个新的Controller实例