Yail List

[Evan Hall]

I have been working on a matching game for a school project, and it keeps saying that it received a yail list.  Can anyone help me fix this or tell me what it means?

[Evan Patton]

Hi Evan,

It would be useful if you attached a screenshot or copy and pasted the exact error message you are receiving. You should also include a screenshot of your blocks (right-click in the blocks workspace and select Download as PNG). With these two pieces of information we might be able to help you better.

Regards,

Evan

[Evan Hall]

ok here is the error messege and my blocks

[Taifun]

did you disable the clock in the designer?

also before enabling the clock in the blocks, make sure, a button component is assigned to both variables ButtonSelect1 and ButtonSelect2  

why did you initialize these variables using an create empty list block? does this make sense?

also see here how to reduce redundancy.. all your Button click events could be simplified...

http://twodogapps.com/?page_id=686#Redundancy

http://twodogapps.com/?page_id=686#Procedures

Taifun

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

[Abraham Getzler]

See attached.

Your timer fires before you have had a chance to

assign button components to the two global variables.

Also, the Blocks Editor will start to give you trouble if you leave

procedures named "procedure" too long.

rename it to "initialize" or something.

ABG

[Evan Hall]

Thank you, all i had to do was disable the clock