Ionic 4(Angular 7)-共享组件问题 [英] Ionic 4 (Angular 7) - sharing components issue

问题描述

我正在尝试为像Angular这样的框架做一个非常平常的事情.目标是通过共享模块不止一次使用同一( HeaderComponent )组件.

I'm trying to do an extremely usual thing for such a framework like Angular. The goal is to use the same (HeaderComponent) component more than once through a shared module.

我的shared.module.ts:

My shared.module.ts:

import { CommonModule } from '@angular/common';
import { NgModule } from '@angular/core';
import { HeaderComponent } from '../header/header.component';
import { IonicModule} from '@ionic/angular';

@NgModule({
    imports: [
        CommonModule, 
        IonicModule
    ],
    declarations: [
        HeaderComponent
    ],
    exports: [
        HeaderComponent
    ]
})

export class SharedModule {}

在app.module.ts中，我添加了以下内容:

In app.module.ts I added this:

imports: [BrowserModule, IonicModule.forRoot(), AppRoutingModule, SharedModule],

在home.page.html中，我尝试用这种方式呈现它:

And in home.page.html I tried to render it this way:

<app-header></app-header>

由于浏览器向我显示了

'ion-col'不是已知元素

'ion-col' is not a known element

，依次类推 HeaderComponent 中的所有离子组分.

and so on for all the ionic components from the HeaderComponent.

我在Internet上找到了解决该问题的方法，建议将IonicModule.forRoot(HeaderComponent)添加到 shared.module.ts 的 imports 数组中，但是这种方法导致以下错误:

I've found a solution for the issue over the Internet that suggest adding IonicModule.forRoot(HeaderComponent) to the imports array of the shared.module.ts, but this approach causes the following error:

"app-header"不是已知元素

'app-header' is not a known element

好像不再可用了.

推荐答案

您还必须像这样将离子模块添加到共享模块中:

you additionally have to add the ionic module to your shared module like this:

import { CommonModule } from '@angular/common';
import { NgModule } from '@angular/core';
import { HeaderComponent } from '../header/header.component';
import { IonicModule } from 'ionic-angular';

@NgModule({
  imports: [
    CommonModule,
    IonicModule
  ],
  declarations: [
    HeaderComponent
  ],
  exports: [
    HeaderComponent
  ]
})

export class SharedModule {}

如果您使用离子4，则必须将IonicModule的导入编辑为此:

if you are using ionic 4 you have to edit the import of IonicModule to this:

import { IonicModule } from '@ionic/angular';

这篇关于Ionic 4(Angular 7)-共享组件问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！