未捕获(承诺):错误的导航控制器ionic2

Question

这是我的 2 个文件。主页是我的默认视图，我想先显示幻灯片。

代码如下：

首页

import { Component } from '@angular/core';
import { NativeStorage ,BarcodeScanner} from 'ionic-native';
import { NavController } from 'ionic-angular';
import { SlidePage } from '../slide/slide';
@Component({
  selector: 'page-home',
  templateUrl: 'home.html',
  providers: [BarcodeScanner, SlidePage]
})
export class HomePage {
  firstLogin = true;

  constructor(public qrScan : BarcodeScanner, public slides:SlidePage, public navCtrl: NavController) {
    if(this.firstLogin){
      this.goToSlides();
    }
  }
  goToSlides = function() {
    console.log("show slides >> ");
    this.navCtrl.push(this.slides);
  };

}

幻灯片.ts

import { Component } from '@angular/core';
@Component({
  templateUrl: 'slide.html'
})
export class SlidePage {
  constructor() {
     console.log("dghdghdg");
  }
}

错误是：

dghdghdg
show slides >> 
invalid page component: [object Object]
Error: Uncaught (in promise): false
    at s (polyfills.js:3)
    at polyfills.js:3
    at Object.ti.reject (nav-controller-base.js:187)
    at NavControllerBase._queueTrns (nav-controller-base.js:197)
    at NavControllerBase.push (nav-controller-base.js:52)
    at HomePage.ngOnInit (home.ts:37)
    at Wrapper_HomePage.ngDoCheck (wrapper.ngfactory.js:22)
    at CompiledTemplate.proxyViewClass.View_HomePage_Host0.detectChangesInternal (host.ngfactory.js:37)
    at CompiledTemplate.proxyViewClass.AppView.detectChanges (view.js:288)
    at CompiledTemplate.proxyViewClass.DebugAppView.detectChanges (view.js:381)

Answer 1

slidePage不是要注入到组件中的服务。所以你不必把它添加到构造函数中。在app.module.ts中声明它们是您需要做的。

  slides= SlidePage;
  constructor(public qrScan : BarcodeScanner, public navCtrl: NavController) {
    if(this.firstLogin){
      this.goToSlides();
    }
  }
  goToSlides() {
    console.log("show slides >> ");
    this.navCtrl.push(this.slides);
  };

不要忘记在app.module.ts declarations中添加SlidePage

Answer 2

您必须按如下方式使用导航。

this.navCtrl.push(SlidePage);