title: PlatformException(no_fragment_activity, local_auth plugin requires activity to be a FragmentActivity., null) in flutter
body: <p>I am trying add Figureprint authentication using <a href="https://pub.dev/packages/local_auth/versions/0.6.2+3#-readme-tab-" rel="nofollow noreferrer">local_auth</a> package of flutter i used same example given that package <a href="https://pub.dev/packages/local_auth/versions/0.6.2+3#-example-tab-" rel="nofollow noreferrer">here it is</a>.
  And i am getting this error </p>
  
  <pre><code>I/flutter (27676): PlatformException(no_fragment_activity, local_auth plugin requires activity to be a FragmentActivity., null)
  </code></pre>
  
  <p>I have try this <a href="https://stackoverflow.com/a/60138859/9128055">solution</a> But the problem is that I don't know about <strong><em>kotlin</em></strong>.</p>
  
  <p>Here is my <strong>Mainactivity.kt</strong></p>
  
  <pre><code>package com.example.bio_met
  
  import io.flutter.embedding.android.FlutterActivity
  
  class MainActivity: FlutterActivity() {
  }
  </code></pre>