[英]ionic3 how can i inject service/provider inside ErrorHandlerService
題
=======
當我將ConfigService注入ErrorHandlerService來呈現敬酒時,給我一個錯誤:errorHandlerService.ts:36它發生:錯誤:未捕獲(承諾):TypeError:無法讀取未定義的屬性'_appLog'
export class ErrorHandlerService implements ErrorHandler {
private _appLog: ConfigService;
constructor (private injector: Injector) {
setTimeout(() => {
this._appLog = injector.get(ConfigService);
}, 0);
}
handleError(error: Error | HttpErrorResponse) {
if (error instanceof HttpErrorResponse) {
if (!navigator.onLine) {
console.log('Please, check your internet connection');
} else if(error.status === 401){
console.log(error.message);
this._appLog.presentToast();
}else {
console.log(error.message);
}
} else {
console.log('Not Http Error');
}
// Log the error anyway
console.error('It happens: ', error);
}
}
@Injectable()
export class ConfigService {
constructor(private storage: Storage){
}
presentToast(){
console.log("test");
}
}
getUsers(){
let promise = new Promise((resolve, reject) => {
let apiURL = `${this.configS.apiRootV1}/users`;
this.http.get(apiURL).toPromise()
.then((res) => {
console.log(res);
resolve(res);
}).catch(this.errorHandlerService.handleError);
});
return promise;
}
在handleError函數'this'中未定義。 嘗試使用'bind'發送'this'的值:
.catch(this.errorHandlerService.handleError.bind(this.errorHandlerService));
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