我正在尝试从同级组件(灯开关到导航栏)共享一个字符串值。我的问题是财产themeColor当我从 DataService 发出新值时没有得到更新。
这是我的 App.Component.html 的结构:
<navbar></navbar>
<banner><light-switch></light-switch></banner>
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我正在尝试使用 DataService:
import {Injectable} from '@angular/core';
import { BehaviorSubject } from 'rxjs/BehaviorSubject';
@Injectable()
export class DataService {
private themeColor = new BehaviorSubject<string>("#f5f0f0");
currentThemeColor = this.themeColor.asObservable();
constructor() { }
changeThemeColor(color: string) {
this.themeColor.next(color)
}
}
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这是我的 light-switch.component.ts:
import { Component, OnInit } from '@angular/core';
import {DataService} from "./../Services/DataService";
@Component({
selector: 'light-switch',
templateUrl: './light-switch.component.html',
styleUrls: ['./light-switch.component.scss']
})
export class LightSwitchComponent implements OnInit {
public currentTheme;
public themeColor;
constructor(private sanitization: DomSanitizer, private dataService: …Run Code Online (Sandbox Code Playgroud)