离子原色动态变化答案

【问题标题】：Ionic primary color dynamically change离子原色动态变化
【发布时间】：2018-01-10 00:37:19
【问题描述】：

有没有办法制作一个单独的主题，例如称为 BlueTheme，我在激活主题时更改 $colors 主要、次要、危险等变量？还是我必须手动更改应用这些颜色的类和位置？例如

.BlueTheme {
//Whenever this theme is activated, I want to change the primary, secondary colors etc
     $colors {
         primary: different color,
         secondary: another color, etc...
     }
}

谢谢！

【问题讨论】：

标签： angular ionic-framework sass ionic2 themes

【解决方案1】：

这是我从this Youtube video 中记下的笔记，供我以后使用。

服务

import {Injectable} from '@angular/core';
import {BehaviourSubject} from 'rxjs/Rx';

@Injectable
export class

     SettingsProvider {
      private theme: BehaviorSubject<String>;

      constructor (
        this.theme = new BehaviorSubject('dark-theme');
       }
       setActiveTheme(val) {
         this.theme.next(val)
       }

       getActiveTheme()  {
          return this.theme.asObservable();
       }

}

/theme/variables.scss

// immediately after
@import "ionic.globals";

@import "custom-theme-light;
@import "custom-theme-dark";

/theme/custom-theme-light.scss

.light-theme {
   ion-content {
     background-color: fff;
     color:000;
   }
   .header .toolbar-title {
    color: #000;
   }
   .header .tooblar-background {
     border-color: #EFF;
     background-color: #fff;
   }
   .tab-button {
     background-color: #fff;
   }
}

主题/自定义主题-dark.scss

.dark-theme {
   ion-content {
     background-color: #000;
     color: #FFF;
   }
   .header .toolbar-title {
    color: #FFF;
   }
   .header .tooblar-background {
     border-color: #100;
     background-color: #000;
   }
   .tab-button {
     background-color: #000;
   }
}

home.html

inside ion-header > ion-title 后的 ion-navbar

<ion-buttons end>
  <button ion-button icon-only (click)="toggleAppTheme()">
    <ion-icon name="bulb"></ion-icon>
  </button>
</ion-buttons>

home.ts

export HomePage {
  selectedTheme: string;
  constructor(settings: SettingsProvider) {
     this.settings.getTheme().subscribe(theme => this.selectedTheme = theme);
   }

  toggleAppTheme() {
    if (this.selectedTheme === 'dark-theme') {
      this.settings.setActiveTheme('light-theme');
    } else {
      this.settings.setActiveTheme('dark-theme');
    }
  }

}

应用组件.ts

export class MyApp {
  //after rootPage
  selecteTheme: string

  constructor( ..., private settings: Settings)
    this.settings.getTheme().subscribe(theme => this.selectedTheme = theme);
    // above platform.ready

app.html

<ion-nav [root]="rootPage" [class]="selectedTheme"></ion-nav>

变量.scss

//里面$colors();添加

dark-theme-primary:
light-theme-primary;

html模板内

[color]="selectedTheme + '-primary'"

【讨论】：