正确的方法是利用EventManager类来绑定事件。这让你的代码可以在其他平台上工作，例如使用Angular Universal进行服务器端渲染。

import { EventManager } from '@angular/platform-browser';
import { Observable } from 'rxjs/Observable';
import { Subject } from 'rxjs/Subject';
import { Injectable } from '@angular/core';

@Injectable()
export class ResizeService {

  get onResize$(): Observable<Window> {
    return this.resizeSubject.asObservable();
  }

  private resizeSubject: Subject<Window>;

  constructor(private eventManager: EventManager) {
    this.resizeSubject = new Subject();
    this.eventManager.addGlobalEventListener('window', 'resize', this.onResize.bind(this));
  }

  private onResize(event: UIEvent) {
    this.resizeSubject.next(<Window>event.target);
  }
}

在组件中使用这个服务非常简单，只需将这个服务作为提供者添加到app.module中，然后在组件的构造函数中导入它。

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

@Component({
  selector: 'my-component',
  template: ``,
  styles: [``]
})
export class MyComponent implements OnInit {

  private resizeSubscription: Subscription;

  constructor(private resizeService: ResizeService) { }

  ngOnInit() {
    this.resizeSubscription = this.resizeService.onResize$
      .subscribe(size => console.log(size));
  }

  ngOnDestroy() {
    if (this.resizeSubscription) {
      this.resizeSubscription.unsubscribe();
    }
  }
}

我检查了大部分答案。然后决定查看关于布局的Angular文档。

Angular有自己的观察者来检测不同的大小，而且很容易实现到组件或服务中。

一个简单的例子是:

import {BreakpointObserver, Breakpoints} from '@angular/cdk/layout'; @ component({…}) 类MyComponent { 构造函数(breakpointObserver: breakpointObserver) { breakpointObserver.observe ([ 断点。HandsetLandscape, 断点。HandsetPortrait ])。订阅(result => { If (result.matches) { this.activateHandsetLayout (); ｝ })； ｝ ｝

希望能有所帮助

我写这个库是为了找到Angular中组件边界大小改变(重新调整大小)的方法，希望能帮助到其他人。你可以把它放在根组件上，会做和窗口大小调整一样的事情。

步骤1:导入模块

import { BoundSensorModule } from 'angular-bound-sensor';

@NgModule({
  (...)
  imports: [
    BoundSensorModule,
  ],
})
export class AppModule { }

步骤2:添加如下指令

<简单的组件boundSensor > < /简单的组件>

步骤3:接收边界大小的详细信息

import { HostListener } from '@angular/core';

@Component({
  selector: 'simple-component'
  (...)
})
class SimpleComponent {
  @HostListener('resize', ['$event'])
  onResize(event) {
    console.log(event.detail);
  }
}

在Angular2(2.1.0)中，我使用ngZone来捕获屏幕更改事件。

看一下这个例子:

import { Component, NgZone } from '@angular/core';//import ngZone library
...
//capture screen changed inside constructor
constructor(private ngZone: NgZone) {
    window.onresize = (e) =>
    {
        ngZone.run(() => {
            console.log(window.innerWidth);
            console.log(window.innerHeight);
        });
    };
}

希望这对你有所帮助!

我所做的就像Johannes Hoppe建议的那样:

import { EventManager } from '@angular/platform-browser'; import { Injectable, EventEmitter } from '@angular/core'; @Injectable() export class ResizeService { public onResize$ = new EventEmitter<{ width: number; height: number; }>(); constructor(eventManager: EventManager) { eventManager.addGlobalEventListener('window', 'resize', event => this.onResize$.emit({ width: event.target.innerWidth, height: event.target.innerHeight })); } getWindowSize(){ this.onResize$.emit({ width: window.innerWidth, height: window.innerHeight }); } }

在app.component.ts:

Import { ResizeService } from ".shared/services/resize.service" import { Component } from "@angular/core" @Component({ selector: "app-root", templateUrl: "./app.component.html", styleUrls: ["./app.component.css"] }) export class AppComponent{ windowSize: {width: number, height: number}; constructor(private resizeService: ResizeService){ } ngOnInit(){ this.resizeService.onResize$.subscribe((value) => { this.windowSize = value; }); this.resizeService.getWindowSize(); } }

然后在你的app.component.html中:

<router-outlet *ngIf = "windowSize? "宽度> 1280 && windowSize?。高度> 700;errorComponent”> < / router-outlet > < ng-template # errorComponent > < app-error-component > < / app-error-component > < / ng-template >

下面是最新版本的Rxjs对@GiridharKamik答案的更新。

import { Injectable } from '@angular/core';
import { Observable, BehaviorSubject, fromEvent } from 'rxjs';
import { pluck, distinctUntilChanged, map } from 'rxjs/operators';

@Injectable()
export class WindowService {
    height$: Observable<number>;
    constructor() {
        const windowSize$ = new BehaviorSubject(getWindowSize());

        this.height$ = windowSize$.pipe(pluck('height'), distinctUntilChanged());

        fromEvent(window, 'resize').pipe(map(getWindowSize))
            .subscribe(windowSize$);
    }

}

function getWindowSize() {
    return {
        height: window.innerHeight
        //you can sense other parameters here
    };
};