升级到 ionic 8 和独立组件错误警报控制器

Question

我已将我的应用程序从 ionic 7 升级到 8 升级后我遇到以下错误

ERROR NullInjectorError: R3InjectorError(Environment Injector)[_ModalController -> _ModalController]: 
  NullInjectorError: No provider for _ModalController!
    at NullInjector.get (core.mjs:1654:27)
    at R3Injector.get (core.mjs:3093:33)
    at R3Injector.get (core.mjs:3093:33)
    at ChainedInjector.get (core.mjs:15723:36)
    at lookupTokenUsingModuleInjector (core.mjs:5730:39)
    at getOrCreateInjectable (core.mjs:5778:12)
    at Module.ɵɵdirectiveInject (core.mjs:11050:19)
    at NodeInjectorFactory.TabsPage_Factory [as factory] (tabs.page.ts:26:22)
    at getNodeInjectable (core.mjs:5984:44)
    at createRootComponent (core.mjs:15998:35)

后来我发现这个问题与独立组件相关

https://github.com/ionic-team/ionic-framework/issues/28385

根据上面的建议，我已经添加了

从'@ionic/core/components/ion-modal.js'导入{defineCustomElement as DefineModal}；

defineModal();//构造函数调用

我遇到同样的错误>请有人建议

Answer 1

您收到此错误的原因是因为您没有为独立组件正确导入它。

import { ModalController } from '@ionic/angular/standalone';

然后使用旧方法：

constructor(private modalCtrl: ModalController) {};

或使用新方法：

private modalCtrl: ModalController = inject(ModalController);