Flood fill for table or painting pixel

[_legend_games]

Hello
I would like to make an application same to this in video, could you please tell me how to code it step by step
Thank you in advance

[ABG]

If all you need is rectangular coloring, you can draw a fat line.
Change your line width and color as you go.
Flood fill algorithms are complex and slow in comparison.

Sample:
http://ai2.appinventor.mit.edu/?galleryId=5214268554739712

[Juan_Antonio]

Here a flood fill extension in Canvas.

Flood Fill Extension. Fill area of an image with a color

Hello friends, [relleno6] Fill an area of ​​an image with a color. You must copy the image to the ASD, in this example the image is copied from the asset to the ASD. Canvas.Up and Canvas.Touched are necessary. If you want to resize the image, use the "imageWidth" and "imageHeight" blocks. Better with a pen android phone Code based in: java - Android flood-fill algorithm - Stack Overflow with modifications. - App example. [relleno2bi] p187C2i_extension_rellenar.aia (19…

[ABG]

If you want an example of representation of a grid based puzzle, see

Numbrix

For your puzzle, you would assign numbers 1-6 for your colors and represent each puzzle as a 9 by 9 table (list of lists) of color numbers both as a target state and as a current board state.

You could keep a list of your 6 color buttons to match them against your list of colors by index.