
  </div>

  <div id="dartdoc-main-content" class="main-content">
      <div><h1><span class="kind-class">PhotoViewer</span> class     <a href="https://dart.dev/null-safety" class="feature feature-null-safety" title="Supports the null safety language feature.">Null safety</a>
 </h1></div>

    
    <section>
      <dl class="dl-horizontal">
        <dt>Inheritance</dt>
        <dd><ul class="gt-separated dark clazz-relationships">
          <li><a href="https://api.flutter.dev/flutter/dart-core/Object-class