Android Question find difference game

I do like to play find difference game. Not sure whether it relates to your question but if I want to make it:

• Use B4J to make an authoring tool: define data structure with picture and hot areas, use mouse click event to record hot areas which include center coordinates and area radius, save to picture sets
• B4A: load picture sets with hot areas info, use touch event instead of button to get coordinates and check if it is in hot areas

How about using multiple imageviews and catch the click event?

You shouldn't use buttons for this. Put a transparent panel above the ImageView and find the touched point with the Touch event.

Yes, it is a good practice of B4X powerful tool, you can do it by:
1- As Erel said: put transparent panel above imageview & find the touched point with touch event of panel "make sure panel & imageview have the same dimensions".
2- Add string data "desired x,y point" to second imageview tag property to handle/compare the touched point of panel with the point of desired true answer.
3- In most cases the touched point is not the same of true answer point, so you should approximate the answer as the shortest distance between two points.

I think we can use a rounded corner panel for the touch area.

I guess my method is very primitive. ?


It is difficult to match the differences in design.


I prepared a difficult game. apk is attached.