How to Create an Undo/Redo Button for Coloring/Drawing App?

Questions about Thunkable Canvas / Gaming
1

Hello! I’m a beginner, and I would like to say Thunkable is GREAT! I’ve been able to create everything I’ve needed to for my app using the docs and the community boards, but I’ve finally hit a problem I haven’t been able to solve on my own.

I’m trying to create an Undo/Redo button for my coloring/drawing app.

I’m using the canvas block and touch drawing, and I was hoping there was a way to save each stroke that the user makes and then when they press an “undo button”, it would reveal the last canvas that was saved making it appear as if they had undone what was previously there.

Please let me know if there is a document, tutorial, or a solution that I’m unaware of that would point me in the right direction. Thank you for your assistance!

1 Like
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I don’t know what the rules are for bumping an old request or making a new one. Anyway, I’d like to be able to do this too. To be able to save progress on a drawing app with undo / redo.

The only thing I can think might work is to somehow plot each stroke with coordinates and time stamp. Idk where to go from there though.

Hope someone has a solution