CODEWITHSUNDEEP
android-virtual-deviceandroid-uiautomator
Tim Boland
Tim Boland

Reputation: 1972

UI Automator Viewer: receiving "Error taking device screenshot: null" every time from AVD device

This only happends on the AVD devices within the AVD manager. I never get this error when capturing uiautomatorviewer screenshots from Genymotion.

When attempting to capture within the Android Device Monitor in AS...it gives me a little more detail: Reason: Error obtaining UI hierarchy

enter image description here

Upvotes: 10

Views: 7361

Answers (2)

Ajinkya Lokhande
Ajinkya Lokhande

Reputation: 51

In addition to answer given by Houston Haynes, the problem can happen if you have set the flags for your activity like this: 

getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);

You can just comment the code and take the screenshots via anything(Android Studio, uiatutomatorviewer etc). Hope it helps!!

Upvotes: 5

Houston Haynes
Houston Haynes

Reputation: 106

Try it with HAXM acceleration turned off, if you can. I had to run the test using a profile that then ran the test on a physical device to get the screen shots. Essentially, if the AVD has Use GPU or Snapshot selected - even if running on a USB attached device, screenshots fail. This is a bug in uiautomator according to the developers involved with maturing the Appium platform.

Upvotes: 5

Related Questions