The Provider Error in Nativescript and Angular 2: Finding a Solution

I'm facing an issue while loading a Nativescript app using Angular 2 and TypeScript. I've been attempting to resolve this for quite some time. Here is a snippet of my code:

list.service.ts

import { ItemListApi } from '../sdk/services/custom/ItemList';
import { ItemList } from '../sdk/models/ItemList';

@Injectable()
export class ListService {
items: Observable<Array<Item>>;
public grocery: Grocery = new Grocery('', '');
private listModel: ItemList = new ItemList();

constructor(private itemListApi: ItemListApi,
    private authModelApi: AuthModelApi,
    private loginCredentials: LoginCredentials) {

}

addItems(list: ItemList) {
    let uid;
       uid = this.loginCredentials.getUserId();
         return this.itemListApi.create({
        "name": list.name,
        "userid": uid
    });
};
}

module.ts

@NgModule({
imports: [
CommonModule,
FormsModule,
RouterModule
],
declarations: [
LoginComponent,
ListComponent
],
providers: [
LoginService,
ListService,
LoginCredentials,
HeroActions,
HeroService
],
exports: [
LoginComponent,
ListComponent
]
})

Every time I try to run the app, I encounter the error message "No provider for ItemListApi" ... the ItemListApi comes from the Loopback Nativescript SDK. Can someone help me identify the problem with my code?

Answer №1

Make sure to include ItemListApi in the list of providers in your app.module.ts:

providers: [
LoginService,
ListService,
LoginCredentials,
HeroActions,
HeroService,
ItemListApi
],

Regarding Nick's comment, it may not be possible for him to add it as a provider in the current typescript file he is working on because he is using @Injectable, not @Component.

Answer №2

It was noted in the feedback that you should make changes to your imports within the module.ts file.

Include the following:

import { SDKBrowserModule } from './shared/sdk/index';

alongside the other imports already present in your module.ts file, and don't forget to add:

SDKBrowserModule.forRoot()

to your imports array within the module.ts file.

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