Angular 指令不接收组件在 ngOnDestroy 方法中所做的更改

Question

组件被销毁后出现意外指令行为。

指令未在组件的 ngOnDestroy 方法中进行更改

组件：

export class InfoButtonComponent implements OnDestroy {
    display = false;

    justMethod() {
      this.display = true | false; // (whatever) works fine, directive recevied that display was changed
    }

    ngOnDestroy(): void {
      this.display = false; // directive doesn't handle it
      this.cdr.detectChanges();
    }
}

<div
    [show]="display"
  >1</div>

指令：

export class TooltipDirective implements OnChanges {
  @Input() show = false;
  ngOnChanges(changes: SimpleChanges): void {
    // get changes from component made in other methods
    // doesn't get changes made in ngOnDestroy method
  }
}

Answer 1

似乎与 ngOnDestroy():

的文档说明相符

Called immediately before Angular destroys the directive or component.

我会把重点放在“立即”上，不希望之后运行进行另一轮变更检测。

不清楚你试图完成什么，但听起来像是 hack。

Angular 指令不接收组件在 ngOnDestroy 方法中所做的更改

Angular Directive doesn't receive changes from component made in ngOnDestroy method

javascript

angular

angular-directive

angular-components

lifecycle