角度2,离子.无法解析HomePage的所有参数

Home.ts

import { Component,Injectable } from '@angular/core';
import { NavController } from 'ionic-angular';
import { ToastController } from 'ionic-angular';
// import { File } from '@ionic-native/file';
import { Diagnostic } from '@ionic-native/diagnostic';
import { CameraPreview,CameraPreviewOptions,CameraPreviewDimensions} from '@ionic-native/camera-preview';
declare var cordova: any;

@Component({
  selector: 'page-home',templateUrl: 'home.html',})

@Injectable()
export class HomePage {

  constructor(
    private navCtrl: NavController,private toastCtrl: ToastController,// public file:File,public diagnostic:Diagnostic,public cameraPreview: CameraPreview,public previewRect: CameraPreviewOptions
  ) {  this.checkPermissions(); }

app.module.ts

import { NgModule,ErrorHandler } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { IonicApp,IonicModule,IonicErrorHandler } from 'ionic-angular';
import { MyApp } from './app.component';


import { HomePage } from '../pages/home/home';
import { Diagnostic } from '@ionic-native/diagnostic';


import { StatusBar } from '@ionic-native/status-bar';
import { SplashScreen } from '@ionic-native/splash-screen';

@NgModule({
  declarations: [
    MyApp,HomePage,],imports: [
     BrowserModule,IonicModule.forRoot(MyApp)
  ],bootstrap: [IonicApp],entryComponents: [
     MyApp,Diagnostic
  ],providers: [
    StatusBar,SplashScreen,Diagnostic,{provide: ErrorHandler,useClass: IonicErrorHandler},{provide: Diagnostic,useClass: Diagnostic}
   ]
})
export class AppModule {}