如果我从 MatDialog 打开组件，为什么 ngOnInit 不起作用？

Question

Why the component may get stuck after constructor? ngOnInit does not take a very long time to reach. If there is a random change to store, for example, then the component loading continues

If I declare like this:

<app-my-component></app-my-component>

everything is work. but if I do like this:

public show(someData:SomeData) {
    const config: MatDialogConfig = {
      hasBackdrop: true,
      data: {
        someData,
      },
    };
    this.matDialog.open(MyComponent, config);
  }

ngOnInit doesn't work. why?

Answer 1

Check if MyComponent.ngOnInit will be called when you invoke c method. MatDialog will create this component in runtime in response to event which will call show method