如何通过单击 mat-expansion-panel-header 来防止切换 mat-expansion-panel? [英] How to prevent toggling mat-expansion-panel by clicking mat-expansion-panel-header?

问题描述

我知道 mat-expansion-panel-headers 是一个按钮.单击该按钮上的任意位置可切换扩展打开/关闭.但我不想让用户点击标题上的任何地方并打开它.应该有一个小按钮.单击该按钮将打开/关闭扩展面板.我该怎么做?

I know mat-expansion-panel-headers is a button. clicking anywhere on that button toggles the expansion opens/closes. But I don't want to let users click anywhere on the header and open it. There should be a small button. One click on that button will open/close the expansion panel. How can I do that?

我已经试过了，但是没有用.

I have tried this, but it didn't work.

<mat-expansion-panel>
<mat-expansion-panel-header (click)="$event.preventDefault()">
  <mat-panel-title>
    MENU
  </mat-panel-title>
</mat-expansion-panel-header>

推荐答案

你可以玩切换功能:

<mat-expansion-panel >
<mat-expansion-panel-header #panelH (click)="panelH._toggle()">
  <mat-panel-title>
   <i class="material-icons app-toolbar-menu" (click)="panelH._toggle()">menu </i>
  </mat-panel-title>
  <mat-panel-description>

  </mat-panel-description>
</mat-expansion-panel-header>

参见stackblitz

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