ANY COMPONENT PROBLEMS

[lorella grassili]

HALLO ,I HAVE A PROBLEM WITH ANY COMPONENT. I HAVE FOLLOWED A TUTORIAL STEP BY STEP TO LEARN, BUT I HAVE ALWAYS THE FOLLOWING ERROR 

Property setter was expecting a com.google.appinventor.components.runtime.Button component but got a YailList instead.

-End Application-, I 

I CREATED AN APP SIMPLE TO UNDERSTAND BUT THE ERROR IS THE SAME. 

ATTACHED MY SCREEN:

THANKS

[Farzeen Harunani]

Hi,

Please don't type in ALL CAPS as it appears that you are yelling at us. 

You use a for loop, which is correct, but you pass in the list instead of the button in the list. 

Use item instead of global LB within your for loop. 

Farzeen

[lorella grassili]

Sorry for ALL CAPs, and thank you for answer. I don t understand what do you means, i m a begginer.

Thanks Thanks thanks

[Chris Ward]

Hello lorella

Yes, sometimes a typo is staring you in the face but you just can't see it :)

Like this:

[lorella grassili]

Thank you, now it s ok.

Now i ve this problem i have many arrangment , each of which has inside a textbox

i would like table arrangment visible  only those where i enter a number into the textbox.

But remains all visible.

 i m so stupid.

You are very kind , and i thank you for the help

Lorella

[Farzeen Harunani]

You're not stupid by any means! You're learning!

Here's a code snippet to get you started...

Farzeen

[lorella grassili]

Thank you now i prove.

[Abraham Getzler]

See attached for a general solution

to optional text box visibility

ABG

[lorella grassili]

wow Abraham, you are a genius !! I m already lost myself. But i prove