Screen overlay detected blocks Android permissions

Question

I\'ve noticed a strange issue with my Android app on my new phone. SDK 23 permission popups like external storage are blocked by the attached alert below. I initially though

Answer 1

Usually, this is caused by the use a floating app.

For Samsung Android Phone users:

Open the Settings
Then Applications > Application manager
Press on More > Apps that can appear on top

If you find an app with a bubble, display screen overlay. If an app adjusts your phone’s brightness, disable screen overlay option on those apps as well. Point is, you have to figure out the culprit app and disable screen overlay.

Source: Fix Screen Overlay Detected Error On Android