Note: An apk/AndroidManifest.xml file was already created for
your app by flutter create. You can check it out if you like,
but you don’t need to modify it when getting started.

First, ensure you installed the Android SDK tools
(see “Setting up your Android device” from Getting started).

Run android update sdk from the command line,
and install SDK version 22 and build tools version 22.0.1.
For now, Flutter currently expects only these versions.

Then, inside your Flutter app, run flutter apk.

The APK can be found in $MY_FLUTTER_APP/build/app.apk.