问题描述
最近我将Angular 8升级到Angular 10，事实证明我遇到了一个错误，即：
NullInjectorError: No provider for ModalDialogService!
NullInjectorError: R3InjectorError(AppModule)[ModalDialogService -> ModalDialogService -> ModalDialogService]:
NullInjectorError: No provider for ModalDialogService!
我的package.json：
"dependencies": {
"@angular/animations": "^10.1.3","@angular/cdk": "^10.2.3","@angular/common": "^10.1.3","@angular/compiler": "^10.1.3","@angular/core": "^10.1.3","@angular/forms": "^10.1.3","@angular/platform-browser": "^10.1.3","@angular/platform-browser-dynamic": "^10.1.3","@angular/router": "^10.1.3","@ng-select/ng-select": "^5.0.3","@types/jquery": "^3.3.31","@types/qtip2": "^2.2.29","adal-angular4": "^4.0.12","angular2-draggable": "^2.3.2","applicationinsights-js": "^1.0.21","jquery": "^3.5.1","ng-click-outside": "^5.3.0","ng-custom-select": "^2.0.4","ng5-slider": "^1.2.4","ngx-modal-dialog": "^3.0.0","ngx-perfect-scrollbar": "^10.0.1","ngx-quill": "^12.0.1","qtip2": "^3.0.3","quill": "^1.3.7","quill-image-drop-module": "^1.0.3","quill-image-resize": "^3.0.9","rxjs": "^6.6.3","tslib": "^1.10.0","zone.js": "^0.10.3"
}
我按照文档中的说明注册模块：
ModalDialogModule.forRoot()
我试图降级@ angular / cdk，但似乎无济于事。 我将ModalDialogService作为提供程序，但还是没有用。
any1有什么建议吗？
解决方法
您是否正在使用 ModalDialogService ？
constructor(modalService: ModalDialogService,viewRef: ViewContainerRef) { }
openNewDialog() {
this.modalService.openDialog(this.viewRef,{
title: 'Some modal title',childComponent: SimpleModalComponent
});
}