Big help

Alexandre_Cunha · October 29, 2025, 10:33pm

hey guys. all good?

I have a question and I will try to explain it here.

i’m doing my first iOS app. it’s simple. but i’m strugling to understand how to do it.

i have:
msHome (mobileScreen named home)
ScrollableArea1 (MobileScrollableArea with a container (behavior))
tblEvents (iOSMobileTable)

this container has a “mivs” subclass of a “miv” subclass of MobilelmageViewer

on miv (will use on other projects), i have a pressed event
on mivs (specific for this project), i have another pressed event that SHOULD change the tblEvents…

but i can’t change…

how can i change the tblEvents content from “outside” the parent mobileScreen?

thanks!

alex

DASports example.xojo_binary_project.zip (10.9 KB)

Jeremie_L · October 30, 2025, 8:23am

Looks like you need the Observer pattern.

iOSkit has an example of that called JKNotificationCenter

Alexandre_Cunha · October 30, 2025, 2:45pm

Tks!

I downloaded and tried to run, but there are some bugs on code.

I’ll keep looking for an easy solution. I don’t know, in fact, if the xojo IDE is unable to do this, or if this is a normal behavior (and i don’t know how to do it)

Alex

Jason_King · October 30, 2025, 3:16pm

Open the project, copy the JKNotificationCenter module to your existing project. Then you can use it immediately. That module is pure Xojo code and will work straight away

You can look through the iOSKit project to see an example of how to use the notification module, but it’s in general very simple. You’ll define a method for receiving the notification within the view that has your tblEvents and do your update from there

Alexandre_Cunha · October 30, 2025, 6:10pm

sorry, didn’t get. with my xojo skills, i’ll not go so far…

could you please make an example on my project?

i’m sure with an example i’ll understand and go further.

i don’t want to make a “gambiarra” (makeshift)
i could, for example, put a timer to pull the information updated…
It would certainly solve the problem, but it’s not the right way to do it.

DASports example.xojo_binary_project.zip (13.3 KB)

Jason_King · October 30, 2025, 7:31pm

I’m not sure how you didn’t get it. It’s literally just open the iOSKit project, copy the module, paste it into your project. Try it again, I bet you can figure it out

If you need an example you should still be able to access this one from a while back Working on first iOS in-app purchase app... questions - #26 by Jason_King

Alexandre_Cunha · October 30, 2025, 9:02pm

yes, i did it. do not know where to manage the send/receive method.

i looked the example… i didn’t understand how to use it on my project to “add.row” from external method.

Alexandre_Cunha · October 30, 2025, 10:57pm

i think i didn’t explain correctly.

i have this (new example, same question):

an the pressed event of a button is inside a container.

it does not work… and i can understand why it does not work.
i just don’t know how to make it works.

alex

Jeff_Tullin · October 30, 2025, 11:07pm

People will say this is bad design, but it may help:

Add to the App object, 3 public properties

TheHome as msHome
TheScrollableArea as MobileScrollableArea
TheTable as iOSMobileTable

As each of them open, add in the Opening event code like this for mshome:

app.Thehome = me

Then, anywhere else in your app you can do this:

if app.Thehome <> nil then

app.Thehome.someproperty = somevalue

end if

Alexandre_Cunha · October 30, 2025, 11:15pm

Yes, I had thought about doing that…

I’ll implement it just for testing purposes, but there must be a more elegant way to do it…

Or not!

Alexandre_Cunha · October 30, 2025, 11:58pm

thank you for your help. i’ll still wait for another solution, if has.

alex

PaulS · November 1, 2025, 9:27am

You can do following:

Create an Event Defintion in Container1 e.g. ButtonPressed with parameter value as String
In the Pressed event of the Button1 you do RaiseEvent ButtonPressed "text"
In Screen1 you now have a ButtonPressed event in Container11
In that event you can add the code Label1.text = value

This should work.

Alexandre_Cunha · November 1, 2025, 1:40pm

didn’t work…

Martin_T · November 1, 2025, 1:53pm

RaiseEvent is what you need to use here.

Alexandre_Cunha · November 1, 2025, 2:20pm

ohhh…rsrsrs

worked!

Alexandre_Cunha · November 7, 2025, 8:59pm

Hi @PaulS

I need the same thing, but i need to put this container1 inside a MobileScrollableArea…

is it possible?

PaulS · November 7, 2025, 9:26pm

I’m not familiar with iOS development in Xojo.

But I assume it should work in the MobileScrollableArea too.

Maybe you have to add a PressedButton Event Definition in MobileScrollableArea and add a RaiseEvent in the PressedButton event of container1 inside a MobileScrollableArea.

That would give you again the PressedButton event in screen1.

With other words. You can keep using RaiseEvent until you are at the level where you want to do something with that event.

Alexandre_Cunha · November 7, 2025, 9:58pm

didn’t work

test_paulS.xojo_binary_project.zip (6.5 KB)

PaulS · November 8, 2025, 2:17pm

As mentioned before I’m not familiar with iOS development in Xojo.

When I look at the test program, I see that Container1 is added to alemac_MobileScrollableArea in Screen1. Container1 isn’t added to alemac_MobileScrollableArea itself. Therefore there is no ButtonPressed event available in alemac_MobileScrollableArea.

Unfortunately my solution isn’t going to work in iOS when using a MobileScrollableArea.