Check whether component in arrangement

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#1

Is there any way to check if an arrangement has any component it?

Thanks!

Detect whether component taken away from arrangement
#2

No there is no way, but you can listen the activity in Arrangement by Scroll Arrangement Handlers (v2+) · Appinventor/Thunkable Extensions

#3

Could you please tell what is it that you wanna achieve? There might be an alternate method to do the same

#4

I have used this extension:

I want to drag and drop only one component in an arrangement so I want to check whether one arrangement has a component already or not.

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#5

When you drag the component into the arrangement store them in a list or dictionary,
which component was dragged to which arrangement and by doing so you can check where a particular component is and whether there are any components in the arrangement

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#6

Ok.

Thank you!

#8

Now I am having another problem - How do I detect whether a component has been taken away from an arrangement?

#9

When you drag out delete the component from the last arrangement in the list/dictionary

#10

But the dictionary I made does not have the component either as key or value. So is there any other way?

#11

Then what keys and values you are storing?

Create a dictionary with arrangement as the keys and the component thats inside as the value so when you set a new value for the key the last value will be automatically removed.

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#12