如何在 Angular 星雲主題中創建響應式 TopNav？

Question

我想使用 Angular Nebular 主題創建響應式頂部導航。 我使用創建了頂部菜單

<nb-layout-header fixed>
    <nb-actions class="left">
        <nb-action class="profile" [nbContextMenu]="items" 
  nbContextMenuPlacement="bottom">Profile</nb-action>

        <nb-action [routerLink]="['/login']">Login</nb-action>
        <nb-action>menu 1</nb-action>
        <nb-action>menu 2</nb-action>
        <nb-action>secret menu</nb-action>
        <nb-action *ngIf="local.retrieve('loggedIn')">secret menu2</nb-action>
    </nb-actions>
</nb-layout-header>

但它在 PC 和移動設備中的布局相同。 當用戶在移動設備中瀏覽時，我如何使頂部導航欄成為“漢堡”菜單，如下面的參考

https://www.w3schools.com/howto/howto_js_topnav_responsive.asp

Answer 1

這是 css 和 mediaQuery 的問題。 有幾種方法，一個簡單，你定義了兩個。css button-responsive 和 menu-responsive

.button-responsive
{
    display:none
}

@media (max-width: 573px)
{
    .button-responsive
    {
        display:inline-block
    }
    .menu-responsive
    {
        display:none
    }
}

然后你可以有一個 nb-actions 和一個 nbContextMenu

  <nb-layout-header fixed>
    <!--add class button-responsive to the button-->
    <button nbButton ghost class="button-responsive" [nbContextMenu]="allitems">
      <nb-icon icon="menu-outline"></nb-icon>
    </button>
    <!--add class menu-responsive to nb-actions-->
    <nb-actions class="left menu-responsive">
      <nb-action class="profile" [nbContextMenu]="items" nbContextMenuPlacement="bottom">Profile</nb-action>
      <nb-action [routerLink]="['/login']">Login</nb-action>
      <nb-action>menu 1</nb-action>
      <nb-action>menu 2</nb-action>
      <nb-action>secret menu</nb-action>
    </nb-actions>
  </nb-layout-header>

在組件的構造函數中使用固定的側邊欄更新相同的技術

constructor(public sidebarService: NbSidebarService) {}

而我們的.html變成了

<nb-layout>
  <nb-layout-header fixed>
    <nb-icon class="button-responsive" icon="menu-outline" (click)="sidebarService.toggle()"></nb-icon>
    <nb-actions class="left menu-responsive">
      <nb-action class="profile" [nbContextMenu]="items" nbContextMenuPlacement="bottom">Profile</nb-action>
      <nb-action [routerLink]="['/login']">Login</nb-action>
      <nb-action>menu 1</nb-action>
      <nb-action>menu 2</nb-action>
      <nb-action>secret menu</nb-action>
    </nb-actions>
  </nb-layout-header>
  <nb-sidebar #sidebar state="collapsed" class="button-responsive" fixed>
    <nb-menu [items]="items"></nb-menu>
  </nb-sidebar>