我正在使用angularfire的身份验证服务向应用程序注册和登录用户，但是当我触发register或signin方法时，出现以下错误：错误：必须从注入上下文中调用inject（）< / strong>
我试图将我的angular.json文件中的prepareSymlinks设置为true，但仍然无济于事。
我的注册和登录方法如何调用inject（），为什么它不起作用？
请在下面找到我的相关文件
angular.json
GetIconlogin.page.ts
public static class UITools
{
private const uint FILE_ATTRIBUTE_NORMAL = 0x00000080;
private const uint FILE_ATTRIBUTE_DIRECTORY = 0x00000010;
/// <summary>
/// Converts a <see cref="System.Drawing.Bitmap"/> into a WPF <see cref="BitmapSource"/>.
/// </summary>
/// <remarks>Uses GDI to do the conversion. Hence the call to the marshalled DeleteObject.
/// </remarks>
/// <param name="source">The source bitmap.</param>
/// <returns>A BitmapSource</returns>
public static BitmapSource ToBitmapSource(this System.Drawing.Bitmap source)
{
BitmapSource bitSrc = null;
var hBitmap = source.GetHbitmap();
try
{
bitSrc = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(
hBitmap,
IntPtr.Zero,
Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
}
catch (Win32Exception)
{
bitSrc = null;
}
finally
{
DeleteObject(hBitmap);
}
return bitSrc;
}
public static BitmapSource GetIcon(string path,bool isDirectory)
{
IntPtr hIcon = GetJumboIcon(GetIconIndex(path,isDirectory));
BitmapSource icon = null;
using (Icon ico = (Icon)System.Drawing.Icon.FromHandle(hIcon).Clone())
{
icon = ico.ToBitmap().ToBitmapSource();
}
DestroyIcon(hIcon);
return icon;
}
internal static int GetIconIndex(string pszFile,bool isDirectory)
{
uint attributes = FILE_ATTRIBUTE_NORMAL;
if (isDirectory)
attributes |= FILE_ATTRIBUTE_DIRECTORY;
SHFILEINFO sfi = new SHFILEINFO();
NativeMethods.SHGetFileInfo(pszFile
, attributes //0
, ref sfi
, (uint)System.Runtime.InteropServices.Marshal.SizeOf(sfi)
, (uint)(SHGFI.SysIconIndex | SHGFI.LargeIcon | SHGFI.UseFileAttributes));
return sfi.iIcon;
}
// 256*256
internal static IntPtr GetJumboIcon(int iImage)
{
IImageList spiml = null;
Guid guil = new Guid(IID_IImageList); //or IID_IImageList2
SHGetImageList(SHIL_EXTRALARGE, ref guil, ref spiml);
IntPtr hIcon = IntPtr.Zero;
spiml.GetIcon(iImage, ILD_TRANSPARENT | ILD_IMAGE, ref hIcon); //
return hIcon;
}
}
register.page.ts
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"defaultProject": "app",
"newProjectRoot": "projects",
"projects": {
"app": {
"root": "",
"sourceRoot": "src",
"projectType": "application",
"prefix": "app",
"schematics": {},
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"outputPath": "www",
"index": "src/index.html",
"main": "src/main.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.app.json",
"preserveSymlinks": true,
"assets": [
{
"glob": "**/*",
"input": "src/assets",
"output": "assets"
},
{
"glob": "**/*.svg",
"input": "node_modules/ionicons/dist/ionicons/svg",
"output": "./svg"
}
],
"styles": [
{
"input": "src/theme/variables.scss"
},
{
"input": "src/global.scss"
}
],
"scripts": []
},
"configurations": {
"production": {
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"optimization": true,
"outputHashing": "all",
"sourceMap": false,
"extractCss": true,
"namedChunks": false,
"aot": true,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true,
"budgets": [
{
"type": "initial",
"maximumWarning": "2mb",
"maximumError": "5mb"
}
]
},
"ci": {
"progress": false
}
}
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"options": {
"browserTarget": "app:build"
},
"configurations": {
"production": {
"browserTarget": "app:build:production"
},
"ci": {
"progress": false
}
}
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "app:build"
}
},
"test": {
"builder": "@angular-devkit/build-angular:karma",
"options": {
"main": "src/test.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.spec.json",
"karmaConfig": "karma.conf.js",
"styles": [],
"scripts": [],
"assets": [
{
"glob": "favicon.ico",
"input": "src/",
"output": "/"
},
{
"glob": "**/*",
"input": "src/assets",
"output": "/assets"
}
]
},
"configurations": {
"ci": {
"progress": false,
"watch": false
}
}
},
"lint": {
"builder": "@angular-devkit/build-angular:tslint",
"options": {
"tsConfig": [
"tsconfig.app.json",
"tsconfig.spec.json",
"e2e/tsconfig.json"
],
"exclude": ["**/node_modules/**"]
}
},
"e2e": {
"builder": "@angular-devkit/build-angular:protractor",
"options": {
"protractorConfig": "e2e/protractor.conf.js",
"devServerTarget": "app:serve"
},
"configurations": {
"production": {
"devServerTarget": "app:serve:production"
},
"ci": {
"devServerTarget": "app:serve:ci"
}
}
},
"ionic-cordova-build": {
"builder": "@ionic/angular-toolkit:cordova-build",
"options": {
"browserTarget": "app:build"
},
"configurations": {
"production": {
"browserTarget": "app:build:production"
}
}
},
"ionic-cordova-serve": {
"builder": "@ionic/angular-toolkit:cordova-serve",
"options": {
"cordovaBuildTarget": "app:ionic-cordova-build",
"devServerTarget": "app:serve"
},
"configurations": {
"production": {
"cordovaBuildTarget": "app:ionic-cordova-build:production",
"devServerTarget": "app:serve:production"
}
}
}
}
}
},
"cli": {
"defaultCollection": "@ionic/angular-toolkit"
},
"schematics": {
"@ionic/angular-toolkit:component": {
"styleext": "scss"
},
"@ionic/angular-toolkit:page": {
"styleext": "scss"
}
}
}
user.model.ts
import { Component, OnInit } from '@angular/core';
import {AngularFireAuth} from '@angular/fire/auth'
import {auth} from 'firebase/app'
import { Router } from '@angular/router';
import { AngularFirestoreDocument } from '@angular/fire/firestore/public_api';
import { AuthService } from '../services/auth.service';
import { UserService } from '../services/user.model';
@Component({
selector: 'app-login',
templateUrl: './login.page.html',
styleUrls: ['./login.page.scss'],
})
export class LoginPage implements OnInit {
userEmail: string = ""
password: string = ""
constructor(
public afAuth: AngularFireAuth,
private router: Router,
public user: UserService) { }
ngOnInit() {
}
async login() {
//gives access to user email and password
const {userEmail, password} = this
try {
const result = await this.afAuth.signInWithEmailAndPassword(userEmail, password)
// if (result.user) {
// this.user.setUser({
// email: userEmail,
// uid: result.user.uid
// })
this.router.navigate(['/tabs'])
} catch (error) {
console.dir(error)
if (error.code === "auth/user-not-found") {
console.log("User not found!")
}
}
}
}
tsconfig.app.json
import { AngularFireAuth } from '@angular/fire/auth';
import { auth } from 'firebase/app'
import { Router } from '@angular/router';
import { AngularFirestore } from '@angular/fire/firestore'
import { UserService } from '../services/user.model';
@Component({
selector: 'app-register',
templateUrl: './register.page.html',
styleUrls: ['./register.page.scss'],
})
export class RegisterPage implements OnInit {
userEmail: string = ""
password: string = ""
cpassword: string = ""
firstName: string = ""
lastName: string = ""
constructor(
public afAuth: AngularFireAuth,
public router: Router,
public user: UserService,
private afs: AngularFirestore
) { }
ngOnInit() {
}
async register() {
const {
userEmail,
password,
cpassword,
firstName,
lastName} = this
if(password !== cpassword) {
return console.log("Please reconcile passwords")
}
try {
const result = await this.afAuth.createUserWithEmailAndPassword(userEmail, password)
// sets user information in firestore
this.afs.doc('users/${result.user.uid}').set({
userEmail,
firstName,
lastName
})
this.user.setUser({
email: userEmail,
uid: result.user.uid
})
console.log(result)
this.router.navigate(['/tabs'])
} catch(error) {
console.dir(error)
}
}
}
答案 0 :(得分：0)
将以下行放在有角度的应用程序的tsconfig.app.json的editorOptions部分中。
“路径”：{“ @ angular / ”：[“ ../ node_modules / @ angular / ”]}