A few suggested Thunkable features to produce truly professional apps

Hi Italo,
Thanks for replying.
Yes, I just discovered that a few minutes ago. I thought I had scrolled all the way down, but had not. However, it appears the features I mentioned points 1, 2, and 4 still need to be addressed.
It would be great if Thunkable had those properties.
Rick Boozer


avance del punto 4

co.com.dendritas.HorizontalArrangementAddons.aix (10,0 KB)


Thank you, Andres! I will try the add-ons that you sent to me and get back with you to let you know if they do what I need. Again, I appreciate your effort.
Rick Boozer

Hi @Andres_Cotes, could you please prepare a screenshot about the methods and a short description of what this extension is able to do?



Hola @Taifun

perdon por que no borre los metodos de la plantilla que estaba utilizando

mas tarde la actualizo


@Andres_Cotes it looks nice what you created…
so this extension only offers properties to modify in the designer, but not in the blocks editor?

but as already mentioned several times, usually we use color blocks for colors instead of hex values
see again our discussion below…
it does not look like you want to follow this design decision from the MIT App Inventor team?


more about colors see also here http://appinventor.mit.edu/explore/ai2/support/blocks/colors.html

How do colors work in App Inventor?

Internally, App Inventor stores each color as a single number. When you use make color and take in a list as an argument, internally this list is then converted using App Inventor’s color scheme and stored as a number. If you knew the numbers for the colors, you could even specify what color you wanted something to be by just setting its Color property to a specific number. If you want to see a chart of colors to numbers, check out this page.

see also http://appinventor.mit.edu/explore/app-inventor-color-chart.html

@moderators might want to move the color discussion into a separate thread…


hola @Taifun se que el tema lo habíamos comentado pero esto es lo visualiza mi mente con el tema de los colores

it looks like you are assuming, that App Inventor can only create 15 colors using the colors block?
no: you can create all colors, see the screenshot below

as example let’s create color aquamarine

and you also can use just an integer value, in the example the value -8388652 or 4286578644 to get color aquamarine, see again the link I provided earlier App Inventor Color Chart

see also Juan Antonio’s post here about colors https://groups.google.com/d/msg/mitappinventortest/i_5h0Qua-Q0/HYVpsPFYBAAJ, his study is in spanish, so what about taking a look there?



por favor define un color en el panel de propiedades que este por fuera de los 15 que se visualizan

you will have to do this in the blocks editor
someone else also might want so say something about using colors in App Inventor… @Italo? @Mark? @Boban_Stojmenovic?
do others think, it’s a great idea to use hex values instead of the existing philosophy?



es correcto ese es es el punto falta mejorar eso, por eso existe la extension resume un estandar mas amplio

esto es un ejemplo con 6 colores cual se ve mejor ???

as already said, instead of the make color block

you also can use integer values like this



@Andres_Cotes Your extensions are most of the times very useful, although you are a little short in documentation. But this time, I will have to agree with @Taifun, and also repeat my point: When you make extensions to do things that can be made with blocks, you are not really helping the purpose of App Inventor/ Thunkable, which is teaching non programmers to code. You are preventing people from learning how to code their own solution, like I did here AI/Thunkable Color to Hex
What your extension does, it’s easily doable with blocks.


Looks like the initial color palette in the designer was made so students can easily select one of the basic colors, not for programmers to have a wide range of professional looking colors available at one click. People tend to forget what App Inventor really is.

If you want to use colors in HEX, What prevents the user to create a procedure with blocks to read the hex number provided and converts it to RGBA or the App Inventor color notation?

I think having the option doesn’t hurt. But I rather have a clean procedure which I have full control over its blocks to do the job, than load an external extension to do it.


I disagree completely, I’m actually an aspx and vb.net programmer and I just doesn’t have the time to learn another language needed in this case, so I use app inventor because it’s simple and more or less powerful for my needs.
What Andres created is not simply doable with blocks. I mean, I already made it in different apps, but it quickly became a mess of arrangements, so if I can have an extension that do it for me, it’s totally appreciated.
We actually need more extensions to allow less messing around with nested arrangements and graphics crazyness.

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@gabryk If you disagree with me or not, or if you have time or not to learn a programming language doesn’t change the fact that the App Inventor project is an educational tool to teach people how to code. Period. I never said you can’t use/make some extension that can be done with blocks. By all means, do it. What I said is that the true value of App Inventor is to actually learn how to program your own solutions. Visualising the solution, laying the blocks in the right order, debug you code, and eventually achieve success is a more rewarding experience than just slapping a block to do some easy calculations. That doesn’t teach you anything. Now, if you are not using this learning tool to learn how to program, then that’s a different thing.

Doesn’t mean it cannot change purpose. Maybe that’s 100% right for the MIT version.

So, what is the meaning of this:

In its current MIT version it is a good starting point to experiment, but its limits become more evident the more you use it. Extensions try to expand AI potentiality, and that’s good.
I think AI can became really more of what it is now, providing 100% of flexibility and same potentiality of a classic programming language.

One of the current weaknesses of AI, IMHO, is precisely how messy the designer could become. So I welcome any extensions that allow me to use 1 arrangement instead of 2 (or 3 or 4)…

MIT purpose is to help people teach to make apps & code. It cannot & will never change it’s purpose. Distributions like Thunkable & AppyBuilder are mostly for professional app making. I agree with @Italo

Please, just read, what actually Evan Patton said together with extensions update in App Inventor Open Source Dev forums…


If you make a mess when programming in AI doesn’t mean we all do too. Some people are better organized.
Again, everybody is free to do what they want. Use an extension to do 1+1, it’s your choice.
If you are a teacher, you tell your kids to do an app to calculate 1+1, and then they find somebody did an extension to do 1+1, they will not move a finger to find the solution by themselves. They will just get the extension. They didn’t learn how to code, which STILL IS the purpose of this platform. If it will change some day, we don’t know yet.