How to import a component into another component in angular

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is an angular component, then verify that it is part of this module.

I have an ionic 5.0.0 application I'm facing an issue in importing a component into another.

I have 2 different modules in my application which are ChatPageModule and HomePageModule. I want to include Chat template in Home template (like ng-include). So my home screen will be split in 2. Left side will render home template and right side will render chat template simultaneously.

To achieve this I created a SharedPageModule as follows.

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { Routes, RouterModule } from '@angular/router';

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

import { ChatPage } from '../chat/';

const routes: Routes = [

  imports: [
  declarations: [ChatPage],
  exports: [ChatPage]

export class SharedPageModule {}

Besides everything, your error comes from the fact, that you didn't add a provider:


  providers:  [ChatPage],
  selector: 'app-home',
  templateUrl: '',
  styleUrls: ['']

Sharing modules, You can put commonly used directives, pipes, and components into one module and then import just that module wherever you need it in other parts of your app. Listening to child component events from the parent. In our case, If we want to change name, we need to emit a custom event from our child component. The parent component reacts to that custom event. Inside our child component first, we are importing an Output decorator and EventEmitter from the @angular/core package.

You are injecting the ChatPage into the HomePage component, which is wrong. You don't need to inject anything. You just need to refer the instance of the ChatPage.

To do this, you can add a template variable in HTML, and use @ViewChild to read the component and call whatever method you want to call.

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Accessing Other Components, The @ViewChild is a decorator function that takes the name of a component class as its input and finds import { Component, ViewChild } from '@angular/ core';. (Angular 2 - Angular 7) Component can be declared in a single module only. In order to use a component from another module, you need to do two simple tasks: Export the component in the other module; Import the other module, into the current module; 1st Module:

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  • if i am not wrong we have somthing called app.module.ts right ? can you import your chat or shared module in the app.module.ts file ? Just give it a try
  • Please create a stackblitz reproducing the issue
  • try declaring both - u have added only Home page in declarations: [HomePage], try declarations: [HomePage,ChatPage]. Hope it helps!
  • Hi Sachin Gupta Can you elaborate a little more with some sample codes?