title: Ionic segment-button is not focus by default
body: <p>How to set the <code>segment-button</code> is pressed as default? I had set <code>aria-pressed=true</code> it doesn't work.</p>
  
  <pre><code>&lt;ion-card class="card card-md"&gt;
    &lt;ion-card-content class="card-content card-content-md"&gt;
  
      &lt;ion-segment [ngClass]="platformnow" [(ngModel)]="getTaskList"&gt;
        &lt;ion-segment-button class="segment-button" role="button" tappable="" value="onGoing" aria-pressed="true"&gt;
          Normal
        &lt;/ion-segment-button&gt;
        &lt;ion-segment-button class="segment-button" role="button" tappable="" value="history" aria-pressed="false"&gt;
          Complete
        &lt;/ion-segment-button&gt;
        &lt;ion-segment-button class="segment-button" role="button" tappable="" value="queue" aria-pressed="false"&gt;
          High
        &lt;/ion-segment-button&gt;
        &lt;ion-segment-button class="segment-button" role="button" tappable="" value="other" aria-pressed="false"&gt;
          Other
        &lt;/ion-segment-button&gt;
      &lt;/ion-segment&gt;
      &lt;div [ngSwitch]="getTaskList"&gt;
        &lt;button ion-item (click)="viewDetailP()" *ngSwitchCase="'history'"&gt;history &amp;nbsp;&lt;ion-icon name="timer"&gt;&lt;/ion-icon&gt;
  &lt;/button&gt;
        &lt;button ion-item (click)="viewDetailP()" *ngSwitchCase="'onGoing'"&gt;on going &amp;nbsp;&lt;ion-icon name="timer"&gt;&lt;/ion-icon&gt;
  &lt;/button&gt;
        &lt;button ion-item (click)="viewDetailP()" *ngSwitchCase="'queue'"&gt;on going &amp;nbsp;&lt;ion-icon name="timer"&gt;&lt;/ion-icon&gt;
  &lt;/button&gt;
        &lt;button ion-item (click)="viewDetailP()" *ngSwitchCase="'other'"&gt;other &amp;nbsp;&lt;ion-icon name="timer"&gt;&lt;/ion-icon&gt;&lt;/button&gt;
      &lt;/div&gt;
    &lt;/ion-card-content&gt;
  &lt;/ion-card&gt;
  </code></pre>
  
  <p>The output of my code, one of the tab should be pressed by default:</p>
  
  <p><a href="https://i.stack.imgur.com/a49cr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/a49cr.png" alt="enter image description here"></a> </p>