I came up with a solution.
Here is the link.
http://sitemaster.ca/blog/how-to-set-up ... id-things/

I'm trying to develop an app that runs on android things with Raspberry Pi. The app suppose to run in portrait mode. In the AndroidManifest file, I have used this code android:screenOrientation="portrait" , the result is the app running in portrait mode but very slow. I searched online and found @Ja...