title: Flutter dynamic orientation for each screen
body: <p>How to add dynamic orientation for each screen??
  I need a few of my screens must be in portrait and a few of them in the landscape...
  I have used</p>
  <pre><code>SystemChrome.setPreferredOrientations([DeviceOrientation.landscapeLeft,DeviceOrientation.landscapeRight])
  </code></pre>
  <p>and</p>
  <pre><code>SystemChrome.setPreferredOrientations([DeviceOrientation.portraitDown,DeviceOrientation.portraitUp])
  </code></pre>
  <p>for different screen.. But it doesnot solve my problem... The first oreintation is added to all the screen...</p>