title: flutter embedding - Upgrading Pre 1.12 Android Projects Breaks Plugins
body: <p>While building my flutter project, I was forced to follow the instructions in this link <a href="https://github.com/flutter/flutter/wiki/Upgrading-pre-1.12-Android-projects" rel="nofollow noreferrer">https://github.com/flutter/flutter/wiki/Upgrading-pre-1.12-Android-projects</a> for my shared_preferences package to work.
  I followed the instructions there. Now my plugins seem to not work. for example signing with google throws this error: error MissingPluginException(No implementation found for method init on channel plugins.flutter.io/google_sign_in)</p>
  
  <p>Similar errors happen with almost all of my plugins. </p>
  
  <p>here is my flutter doctor -v logs</p>
  
  <pre><code>    • Flutter version 1.10.15-pre.404 at C:\src\flutter
      • Framework revision 9093cf15f6 (2 hours ago), 2019-11-04 22:30:16 -0500
      • Engine revision 7b968ff95f
      • Dart version 2.7.0
  
  [!] Android toolchain - develop for Android devices (Android SDK version 29.0.1)
      • Android SDK at C:\Users\Ajmal Jalal\AppData\Local\Android\sdk
      • Android NDK location not configured (optional; useful for native profiling support)
      • Platform android-29, build-tools 29.0.1
      • Java binary at: C:\Program Files\Android\Android Studio1\jre\bin\java
      • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)
      X Android license status unknown.
        Try re-installing or updating your Android SDK Manager.
        See https://developer.android.com/studio/#downloads or visit https://flutter.dev/setup/#android-setup for detailed instructions.
  
  [√] Android Studio (version 3.5)
      • Android Studio at C:\Program Files\Android\Android Studio1
      • Flutter plugin version 41.0.2
      • Dart plugin version 191.8593
      • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)
  
  [√] VS Code (version 1.39.2)
      • VS Code at C:\Users\Ajmal Jalal\AppData\Local\Programs\Microsoft VS Code
      • Flutter extension version 3.5.1
  
  [√] Connected device (1 available)
      • Android SDK built for x86 • emulator-5554 • android-x86 • Android 9 (API 28) (emulator)
  
  ! Doctor found issues in 1 category. ```
  
  
  </code></pre>