title: Error occoured while using file_picker plugin
body: <p>I am getting an error after using the file picker package.
  I searched about this a lot and still can't able to solve the problem.
  I tried flutter clean also but it also doesn't work.</p>
  <p>The error is below:
  {</p>
  <p>FAILURE: Build failed with an exception.</p>
  <ul>
  <li>What went wrong:
  Execution failed for task ':app:processDebugResources'.</li>
  </ul>
  <blockquote>
  <p>A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
  Android resource linking failed
  F:\flutter\bit_sms\build\pfile_picker\intermediates\library_manifest\debug\AndroidManifest.xml:9:5-15:15: AAPT: error: unexpected element  found in .</p>
  </blockquote>
  <ul>
  <li><p>Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.</p>
  </li>
  <li><p>Get more help at <a href="https://help.gradle.org" rel="nofollow noreferrer">https://help.gradle.org</a></p>
  </li>
  </ul>
  <p>BUILD FAILED in 1m 10s
  The build failed likely due to AndroidX incompatibilities in a plugin. The tool is about to try using Jetifier to solve the incompatibility.
  Building plugin contacts_service...
  √ Built build\app\outputs\repo.
  Building plugin flutter_plugin_android_lifecycle...
  C:\src\flutter\flutter.pub-cache\hosted\pub.dartlang.org\flutter_plugin_android_lifecycle-2.0.0\android\src\main\java\io\flutter\embedding\engine\plugins\lifecycle\FlutterLifecycleAdapter.java:8: error: package androidx.lifecycle does not exist
  import androidx.lifecycle.Lifecycle;
  ^
  C:\src\flutter\flutter.pub-cache\hosted\pub.dartlang.org\flutter_plugin_android_lifecycle-2.0.0\android\src\main\java\io\flutter\embedding\engine\plugins\lifecycle\FlutterLifecycleAdapter.java:22: error: cannot find symbol
  public static Lifecycle getActivityLifecycle(
  ^
  symbol:   class Lifecycle
  location: class FlutterLifecycleAdapter
  2 errors</p>
  <p>FAILURE: Build failed with an exception.</p>
  <ul>
  <li>What went wrong:
  Execution failed for task ':compileReleaseJavaWithJavac'.</li>
  </ul>
  <blockquote>
  <p>Compilation failed; see the compiler error output for details.</p>
  </blockquote>
  <ul>
  <li><p>Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.</p>
  </li>
  <li><p>Get more help at <a href="https://help.gradle.org" rel="nofollow noreferrer">https://help.gradle.org</a></p>
  </li>
  </ul>
  <p>BUILD FAILED in 5s</p>
  <p>Exception: The plugin flutter_plugin_android_lifecycle could not be built due to the issue above.
  Exited (sigterm)
  }</p>
  <p>Can anyone tell me what is going on and how can I solve this ?</p>