For automation testing purposes presently I am downloading the latest build from appcenter and storing it in my local. And in the script I am getting it installed on the android device. But this will not workout when I want to run the script through pipeline. Is there any way to get the apk downloaded directly from appcenter and have it installed into the device.
App Center is a continuous integration, delivery, and testing solution for Android, iOS, macOS, and Windows apps. App Center let developers to ship apps faster and with more confidence by automating the development life cycle.
You can't directly download from app center and install it to android device. But you can upload your application binary package to app center and distribute it. You can distribute releases to individual testers or groups of testers. Azure DevOps uses the App Center Distribute Task for this.
Check Build, test, and deploy Android apps - Azure Pipelines document for more information.