Image occlusions created on iPad are currently not supported in AnkiDroid, but will hopefully be at some point in the (near) future once native image occlusion support is also implemented in AnkiDroid.
If you have access to a Mac or PC and reviewing cards on AnkiDroid is essential, then you could also create your cards on your computer using the Image Occlusion Enhanced add-on for now. These should work on AnkiDroid.