未发现（承诺）：错误：没有GooglePlus提供者

Question

我正在尝试使用cordova-plugin-googleplus插件。

我读过其他文章，说要将该插件添加为提供程序，并且尝试这样做无济于事。

当我尝试访问登录页面时，出现带有堆栈跟踪的错误：

未发现运行时错误（承诺）：错误：没有GooglePlus提供商！错误：没有GooglePlus提供商！在ReflectiveInjector_处的noProviderError（http：// localhost：8100 / build / vendor.js：1628：12）处，在injectionError（http：// localhost：8100 / build / vendor.js：1590：86）处。在ReflectiveInjector处抛出throwOrNull（http：// localhost：8100 / build / vendor.js：3129：19）。ReflectiveInjector上的getByKeyDefault（http：// localhost：8100 / build / vendor.js：3168：25）。ReflectiveInjector .get（http：// localhost：8100 / build / vendor.js：2969：21处的getByKey（http：// localhost：8100 / build / vendor.js：3100：25）），位于AppModuleInjector.getInternal（ng：///AppModule/module.ngfactory.js：615：44）的AppModuleInjector.get（ng：///AppModule/module.ngfactory.js：332：145）。在LoginPageModuleInjector.NgModuleInjector.get 获取（http：// localhost：8100 / build / vendor.js：3936：44）（http：// localhost：8100 / build / vendor.js：3937：52）

堆栈跟踪

Error: Uncaught (in promise): Error: No provider for GooglePlus!
Error: No provider for GooglePlus!
    at injectionError (http://localhost:8100/build/vendor.js:1590:86)
    at noProviderError (http://localhost:8100/build/vendor.js:1628:12)
    at ReflectiveInjector_._throwOrNull (http://localhost:8100/build/vendor.js:3129:19)
    at ReflectiveInjector_._getByKeyDefault (http://localhost:8100/build/vendor.js:3168:25)
    at ReflectiveInjector_._getByKey (http://localhost:8100/build/vendor.js:3100:25)
    at ReflectiveInjector_.get (http://localhost:8100/build/vendor.js:2969:21)
    at AppModuleInjector.get (ng:///AppModule/module.ngfactory.js:332:145)
    at AppModuleInjector.getInternal (ng:///AppModule/module.ngfactory.js:615:44)
    at AppModuleInjector.NgModuleInjector.get (http://localhost:8100/build/vendor.js:3936:44)
    at LoginPageModuleInjector.NgModuleInjector.get (http://localhost:8100/build/vendor.js:3937:52)
    at c (http://localhost:8100/build/polyfills.js:3:13535)
    at Object.reject (http://localhost:8100/build/polyfills.js:3:12891)
    at NavControllerBase._fireError (http://localhost:8100/build/vendor.js:45902:16)
    at NavControllerBase._failed (http://localhost:8100/build/vendor.js:45890:14)
    at http://localhost:8100/build/vendor.js:45945:59
    at t.invoke (http://localhost:8100/build/polyfills.js:3:9283)
    at Object.onInvoke (http://localhost:8100/build/vendor.js:4508:37)
    at t.invoke (http://localhost:8100/build/polyfills.js:3:9223)
    at r.run (http://localhost:8100/build/polyfills.js:3:4452)
    at http://localhost:8100/build/polyfills.js:3:14076

平台详情

• 离子框架：3.6.1
• Ionic应用程序脚本：2.1.4
• 角核：4.1.3
• Angular编译器CLI：4.1.3
• 节点：6.11.2
• 操作系统平台：Windows 10
• 导航器平台：Win32用户代理：Mozilla / 5.0（Windows NT 10.0; Win64; x64）AppleWebKit / 537.36（KHTML，如Gecko）Chrome / 60.0.3112.113 Safari / 537.36

Login.ts

import { Component } from '@angular/core';
//import { GooglePlus } from '@ionic-native/google-plus';
import { TranslateService } from '@ngx-translate/core';
import { IonicPage, NavController, ToastController } from 'ionic-angular';

import { User } from '../../providers/providers';
import { MainPage } from '../pages';

@IonicPage()
@Component({
  selector: 'page-login',
  templateUrl: 'login.html'
})
export class LoginPage {
  // The account fields for the login form.
  // If you're using the username field with or without email, make
  // sure to add it to the type
  account: { username: string, password: string } = {
    username: '',
    password: ''
  };

  // Our translated text strings
  private loginErrorString: string;

  constructor(public navCtrl: NavController,
    public user: User,
    public toastCtrl: ToastController,
    public translateService: TranslateService,
//    private GooglePlus: GooglePlus
  ) {

    this.translateService.get('LOGIN_ERROR').subscribe((value) => {
      this.loginErrorString = value;
    })
  }

  // Attempt to login in through our User service
  doLogin() {
    this.user.login_basic(this.account).subscribe((resp) => {
      this.navCtrl.push(MainPage);
    }, (err) => {
      this.navCtrl.push(MainPage);
      // Unable to log in
      let toast = this.toastCtrl.create({
        message: this.loginErrorString,
        duration: 3000,
        position: 'top'
      });
      toast.present();
    });
  }

}

login.module.ts

import { NgModule } from '@angular/core';
import { GooglePlus } from '@ionic-native/google-plus';
import { TranslateModule } from '@ngx-translate/core';
import { IonicPageModule } from 'ionic-angular';

import { LoginPage } from './login';

@NgModule({
  declarations: [
    LoginPage,
  ],
  imports: [
    IonicPageModule.forChild(LoginPage),
    TranslateModule.forChild()
  ],
  exports: [
    LoginPage
  ],
  providers: [
    GooglePlus,
  ],
})
export class LoginPageModule { }

Answer 1

您需要将GooglePlus提供者添加到AppModule（app.module.ts）