Angular 2错误:尝试使用损坏的视图: detectChanges错误:尝试使用损坏的视图: detectChanges at ViewDestroyedError

import { Component, OnInit, OnDestroy, ChangeDetectorRef } from '@angular/core';

@Component({
  selector: 'app-my-component',
  templateUrl: './my-component.component.html',
  styleUrls: ['./my-component.component.css']
})
export class MyComponent implements OnInit, OnDestroy {
  private destroyed = false;

  constructor(private cdr: ChangeDetectorRef) { }

  ngOnInit() {
    // ...
  }

  ngOnDestroy() {
    this.destroyed = true;
  }

  someMethod() {
    if (!this.destroyed) {
      this.cdr.detectChanges();
    }
  }
}

import { Component, OnInit, OnDestroy } from '@angular/core';
import { Subject } from 'rxjs';
import { takeUntil } from 'rxjs/operators';

@Component({
  selector: 'app-my-component',
  templateUrl: './my-component.component.html',
  styleUrls: ['./my-component.component.css']
})
export class MyComponent implements OnInit, OnDestroy {
  private destroyed$ = new Subject();

  constructor() { }

  ngOnInit() {
    // Subscribe to observables using takeUntil operator
    someObservable.pipe(takeUntil(this.destroyed$)).subscribe(
      // Handle emitted values
    );
  }

  ngOnDestroy() {
    // Unsubscribe from all observables
    this.destroyed$.next();
    this.destroyed$.complete();
  }

  someMethod() {
    this.cdr.detectChanges();
  }
}