Drawing grid on canvas and calling procedure from item from "insert list item"?

[Jack Woolford]

Hello again,

So I've encountered two more problems although am almost done now making something I think that is fairly complicated (Conway's Game of Life whether it works is another thing...). Anyway I need to draw a grid presumable on a canvas from a given global variable for rows and columns. I also need it to be able to fill each square in the grid, and un-fill.

Besides the above I'm having a slight problem with an "insert list item" with wanting to call a procedure and not being able to from the item tab. So any possible ideas on how to fix that would also be highly appreciated.

Oh one last thing I might as well mention, when my app initialises the buttons appear before loading fully and then disappear as planned until the screen is dragged down. How can I have the buttons not appear to be loading each time I open a screen?

Thank you, so far everyone has been extremely helpful.

Thanks.

Edit: Attached is the code for the "Insert list item" problem.

[Taifun]

see Scott's Game of Life here https://groups.google.com/d/msg/app-inventor-developers-library/Nk-c2Iuwi0w/5h26RA_JFo8J

Besides the above I'm having a slight problem with an "insert list item" with wanting to call a procedure and not being able to from the item tab. So any possible ideas on how to fix that would also be highly appreciated.

use a procedure with result

http://appinventor.mit.edu/explore/ai2/support/blocks/procedures.html#return

procedure result

Same as a procedure do block, but calling this procedure returns a result. 

Oh one last thing I might as well mention, when my app initialises the buttons appear before loading fully and then disappear as planned until the screen is dragged down.

probably this is only a companion app issue? did you test it after building the app?

Taifun

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Trying to push the limits of App Inventor! Snippets and Tutorials from Pura Vida Apps by Taifun.         

[Jack Woolford]

Sorry I had marked it as completed as I thought I had worked it out with your help taifun but alas I've encountered a new problem.

See I've seen Scott's version of Conway's Game of Life but it didn't quite do what I wanted it to. So I've tried something else, attached is MazeMaker (which I found in this forum), now somehow it detects which squares it has travelled to and which it hasn't but so far I can't work out what code does that. Once I can get that out of the way I also need to know is there a way to fill a square with a colour if it has a border?

Also thanks taifun as that procedure-result block was just what I needed at first I didn't think it would work but it did.

Also I haven't tested it as an actual app just in AI2 Companion so far, once I'm done I shall though and will report back if the buttons still appear before disappearing.