title: Shared Axis Transition for Animated Switcher?
body: <p>Is there a way I can get the horizontal axis sliding page transition with <code>AnimatedSwitcher</code>?</p>
  <p>I want to keep my background static so I am using <code>AnimatedSwitcher</code> instead of <code>Navigator</code>, how do I then have a sliding animation using <code>AnimatedSwitcher</code>, similar to the <code>SharedAxisTransition</code> in the animations package?</p>
  <pre><code>Scaffold(
      body: Stack(
          children: [
              SizedBox(
                  height: screenHeight,
                  width: screenWidth,
                  child: Container(), // Contains a color so the background is set
              ),
              OtherWidgetsHere(),
          ],
      )
  )
  </code></pre>
  <p>What I do now is, I change <code>OtherWidgetsHere()</code> to a different widget with <code>AnimatedSwitcher</code>, but it does not have animations like <code>SharedAxisTransition</code>.</p>
  <p>How do I use <code>Navigator</code> to change each <code>Scaffold</code> but keep a background image constant, so that only above elements fade through?</p>