使用cmpRef调用动态创建的组件angular的方法

constructor(private viewContainerRef: ViewContainerRef) { }

const componentFactory = this.componentFactoryResolver.resolveComponentFactory(ChildComponent);
const componentRef = this.viewContainerRef.createComponent(componentFactory);

const childComponentInstance = componentRef.instance;
childComponentInstance.doSomething();

import { Component, ComponentFactoryResolver, ViewContainerRef } from '@angular/core';
import { ChildComponent } from './child.component';

@Component({
  selector: 'app-parent',
  template: `
    <ng-template #container></ng-template>
    <button (click)="createComponent()">Create Component</button>
  `,
})
export class ParentComponent {
  constructor(private viewContainerRef: ViewContainerRef, private componentFactoryResolver: ComponentFactoryResolver) { }

  createComponent() {
    const componentFactory = this.componentFactoryResolver.resolveComponentFactory(ChildComponent);
    const componentRef = this.viewContainerRef.createComponent(componentFactory);
    const childComponentInstance = componentRef.instance;
    childComponentInstance.doSomething();
  }
}