Scroll List array object has more items then the one selected in TouchGFX Designer

[nico23]

I have created a scroll list object in TouchGFX Designer. The Scroll List takes a custom container as item. I have 3 items in my scroll list

For some reason, when I call languageSelectorScrollListItems.getNumberOfDrawables(); it returns 5

Checking the member declaration I'm seeing that it is defined as an array with 5 items

touchgfx::DrawableListItems<languageItem, 5> languageSelectorScrollListItems;

 

Why is that?

[nico23]

Ok so for some reason the languageSelectorScrollListItems is set as an array of 5 elements. What I needed was instead the languageSelectorScroll.getNumberOfItems() which returns the correct numbers of items in the Scroll List.

I'll keep this post open to understand why languageSelectorScrollListItems has been set to a fixed 5 

[nico23]

From what I'm understanding, the getNumberOfDrawables just returns the number of, in fact, drawables in your costume container that will be used as an item + 1.

So, if, in my costume container, I have just a text area, it will return 2.

To get the number of items in the list, the method is getNumberOfItems 

Now, I still have to understand how to access the specific item (for instance, I want to access item number 3 of the scroll list) and then access the text area of that specific item. Is there a way to do that or do I need to implement code to trace the index of every item beforehand to access them?

[Marc_LM]

Check Demo9, it uses a custom table to do the association between enum/value/bitmap in
SubeDemoInfo.hpp (yes there is a typo in their filename).

sphere_wheelBase::setAnimationEnddedCallback()