前言

最近在开发Flutter项目时，一个登出功能我认为几分钟就能弄完了，直到发现单凭 Getx 的路由跳转并不能自动注销相关的控制器，查阅百度一直无果。

经过花费一定时间查阅Getx 源码后发现

一个拓展吸引了我的注意

extension Inst on GetInterface {
...


  /// Deletes the `Instance<S>`, cleaning the memory and closes any open
  /// controllers (`DisposableInterface`).
  ///
  /// - [tag] Optional "tag" used to register the Instance
  /// - [force] Will delete an Instance even if marked as `permanent`.
  Future<bool> delete<S>({String? tag, bool force = false}) async =>
      GetInstance().delete<S>(tag: tag, force: force);

  /// Deletes all Instances, cleaning the memory and closes any open
  /// controllers (`DisposableInterface`).
  ///
  /// - [force] Will delete the Instances even if marked as `permanent`.
  Future<void> deleteAll({bool force = false}) async =>
      GetInstance().deleteAll(force: force);
...
 
}

Get是继承于 GetInteface 接口，那么自然拥有这个拓展

可以看到里面有两个关键方法，delete() 、deleteAll()

通过翻译可得知，可以通过remove方法移除指定泛型的某个对象

那么知道该怎么删除了，之后上一个我的状态管理代码

实例

/**
 * @author Marinda
 * @date 2022/11/24 17:55
 * @desc Get页面管理器
 */
class PageManager{

  /*
   * 销毁所有页面数据重新加载！
   * 等找到可以模拟安卓返回键，让Get自动注销相关控制器就删除
   */
  void destoryAllPage(){
    Get.delete<IndexLogic>();
    Get.delete<MyLogic>();
    Get.delete<ContactsLogic>();
    Get.delete<MessageLogic>();
    Get.delete<UpdDetailsLogic>();
    Get.delete<UpdUserLogic>();
    Get.delete<TaskLogic>();
    Get.delete<SearchLogic>();
    Get.delete<ReportLogic>();
    Get.delete<DetailsLogic>();
  }
}

我这里并没有使用removeAll(),因为会移除全部的Get状态。

调用以下相关方法即可实现

[GETX] "IndexLogic" onDelete() called
[GETX] "IndexLogic" deleted from memory
[GETX] "MyLogic" onDelete() called
[GETX] "MyLogic" deleted from memory
[GETX] Instance "ContactsLogic" already removed.
[GETX] "MessageLogic" deleted from memory
[GETX] Instance "UpdDetailsLogic" already removed.
[GETX] "UpdUserLogic" deleted from memory
[GETX] "TaskLogic" onDelete() called
[GETX] "TaskLogic" deleted from memory
[GETX] "SearchLogic" deleted from memory
[GETX] "ReportLogic" onDelete() called
[GETX] "ReportLogic" deleted from memory
[GETX] Instance "DetailsLogic" already removed.
[GETX] GOING TO ROUTE /login

感谢你的观看！