css - mat-expansion-panel添加了下拉 Unresolved 问题

我添加了Angular material mat-expansion-panel来选择选项，当我单击选择菜单时，mat-expansion-panel是自动打开的，任何人都知道如何解决该问题，

Stack blitz example

我的密码

component.html

<mat-accordion>
  <mat-expansion-panel>
    <mat-expansion-panel-header>
      <mat-panel-title>
       <select class="form-control" id="exampleFormControlSelect1">
      <option>1</option>
      <option>2</option>
      <option>3</option>
      <option>4</option>
      <option>5</option>
    </select>
      </mat-panel-title>
      <mat-panel-description>
        Type your name and age
      </mat-panel-description>
    </mat-expansion-panel-header>

    <mat-form-field>
      <input matInput placeholder="First name">
    </mat-form-field>

    <mat-form-field>
      <input matInput placeholder="Age">
    </mat-form-field>
  </mat-expansion-panel>
  <mat-expansion-panel (opened)="panelOpenState = true"
                       (closed)="panelOpenState = false">
    <mat-expansion-panel-header>
      <mat-panel-title>
        Self aware panel
      </mat-panel-title>
      <mat-panel-description>
        Currently I am {{panelOpenState ? 'open' : 'closed'}}
      </mat-panel-description>
    </mat-expansion-panel-header>
    <p>I'm visible because I am open</p>
  </mat-expansion-panel>
</mat-accordion>

最佳答案

我没有您描述的问题，但我理解您的意思。发生的是，当您单击选择时，您还单击了扩展面板。您可以通过防止点击通过选择来防止此行为。

stopPropagation

在HTML中，将选择更改为：

<select class="form-control" id="exampleFormControlSelect1" (click)="$event.stopPropagation()">