Help for change the image one button and the new image stay there

MIT App Inventor Help
1

Hi everyone
Like you can see my english is not very good but I´m going try to explain as best as possible.

Im trying to make it so that when a button is clicked, it changes the images (in the button) and opens another screen. So far I have succeeded, but when I return to the start screen the button has change back to the initial imagen and not to the one that had changed as I wanted.
What do I have to d to make the new image stay after being clicked?

Thank you very much for your invaluable help.

Monika

2

Screens are separate programs.

If you close a screen it forgets everything, except for what was stored in TinyDB.

Consider using stacked Vertical Arrangements instead of Screens, only one .Visible at a time.

3

Thank you for your answer. I have done some dispositions but I need to have diferentes screen too. Could you tell me how can I do that using TinyDB?

4

You will need the Other Screen Closed block to catch return to this screen.

In it, reload everything (Label.Text, variables, etc. that you stored in TinyDB before you started a new Screen.

You will need to think up TinyDB tags for everything.

It's like living out of a suitcase, for a traveling salesman.

5

I have done something like you have told me but nothing diferent is hapened. When I clic the button the imagen is change but when I return to this screen the imagen is the first again. I put here the blocks. I only change one imagen, this imagen is the same for all buttons that they can change.

blocks (18)
blocks (18)1088×278 39.1 KB

blocks (17)
blocks (17)910×334 41.1 KB

blocks (16)
blocks (16)734×52 9.43 KB

6

You did it backwards.

You must store Lectura1.Image to tag 'Lectura1ImageName' (use a text block) in the Click event.

In the Other Screen Closed event you must retrieve tag 'Lectura1ImageName' and put its value into Lectura1.Image

7

Thank you very much but I feel lost I have done all changes but nothing is changing.

I have tried to see like two diferents events.
First event when I want the button change the imagen when I click. This event works perfectly.
Second event when the start screen is open because another is closed, I have tried all things I think and all follow like if don't had anythink, the behaviour is the same like if that event didn't exist.

Could you show me with the blocks? I don't know what more I can do, only don't do it, that is another option.

8

simple example:

keepImageAsSet.aia (14.3 KB)

image
image716×415 44.8 KB

9

Thank you very much. That solution was perfect. I have done for all buttons and was working well but sudenly now all the imagen when the screen is initilize are the new imagen and when I click it change like de start button.
I have done exactly that you have said and they working well.
why now is working in the other direction? could be because there are a lot of buttons?

blocks (23)
blocks (23)1256×512 73.9 KB

blocks (21)
blocks (21)1586×1774 513 KB

10

Can be done:

blocks (19)
blocks (19)1225×1499 196 KB

keepImageAsSet (1).aia (35.1 KB)

11

Thank you very much but this is too long I have 10 buttons.
Is it not possible to do as you told me before?

12

Did you not see that this will handle all your buttons, if you add the correct information to the three lists?

13

Thank you very much for all you help but I
need to add 7 buttons because those
activity has 10 buttons and I can't do that with
any button because there are more buttons that
they don't have that propierty.

14

What is the issue of adding 7 more items to each of these variables ?

image
image711×385 40.5 KB

It will take you less time than it did to create all the blocks you have created

15

great! thanks!

16

No, that is not the problem, the problem is that I cann't use the other block with generic buttons because I have more buttons and they must not change when I clic.

17

Then do not include them in the list variables.

18

Ok, I was thinking that in the generic button was incluided all buttons.
Tomorrow I will try it. Thank you very much

19

Ok. I have done your codice with all buttons and work well, now the problem is that the return button don't work correctly.
I will try to explain, I want, as you know, that when I click some buttons change the screen and change the imagen to the other. Now this work well but I have a button to return all buttons to the start because could be posible the kid wants to start. Before I had a simple button to retur the initial imagen but now have the same problem, when I clik the retur button all imagens are their initial image but when I star with one button when I return the screen, the images are like before to return.
Then I have put :when I click return button, the same codice the screen has at inicializate, but doesn't work.

20

Probably not saving the button image states to the tinydb ?