An improved version for Android devices, Framed Image Viewer Exercise, is available
from either the Google Play Store or this page.
It's easier to get the app from the Play Store.
Either method requires that the user explicitly clear the storage of the
Viewer app to avoid a crash on startup.
This can be set by pressing the
Settings : Apps : Viewer : APP INFO - USAGE - Storage : CLEAR DATA button before
and after the first opening of the app.
Google Play Store: Get the
Framed Image Viewer Exercise.
- This page: Download Viewer.apk
and place the apk on your Android device.
Before installing the apk file
on your Android device be sure to turn off Play Protect on the Google Play Store app.
Otherwise, you may encounter an
"App not installed" screen.
Play Protect is accessed through the "hamburger" icon on the top left of the Play Store app home page.
Press the "Settings" icon on the top right of the Play Protect page to turn off Play Protect.
Once the app is installed, Play Protect can be turned back on.