How to make a popup message like in the picture?

Question

Android

by clicking on the icon (i) a message should pop up as in the picture

how to do it?
I know about toast and dialogues, but it seems that you can’t do this with standard tools, tell me, can there be something custom?

Answer 1

Such a message is called a tooltip, and there are many libraries for using it. Several given by github search:

• ViHtarb/Tooltip
  
• douglasjunior/android-simple-tooltip
  
• sephiroth74/android-target-tooltip
  
• xizzhu/simple-tool-tip