How to open a specific layout in another screen

MIT App Inventor Help
,
1

How to open a specific layout in another screen like when I click a button, it opens a new screen and then in the screen, specifically a single vertical arrangement is opened?

2

Can you explain in more detail, about what you want to make

3

when button 1 is clicked, open screen 2 and in that screen, vertical arrangement 1 is opened...
when button 2 is clicked, open screen 2 and in that screen, vertical arrangement 2 is opened

4

Ooo, i got it

5

So how to do it?... Please help sir,I shall be grateful...

6

you can use this block :
blocks

7

What is the start value? how to use it?

8

You can use the hide button and use it

9

Make the Block like this :

On Screen1 Create Like this :
blocks
On Screen2 Create Like this :
blocks

1 Like
10

Till yesterday I was able to use "Open another screen with start value" button today morning it stopped working... please help

image
image784×574 31.6 KB

^screen 1

image
^screen 2

These things stopped showing effect
Also now even if I click any button, the title.text is always "bird"... If the bird block is removed everything else stops happening...

11
12

use Do it to debug your blocks, see also tip 4 here https://puravidaapps.com/learn.php
especially in your case: what is the value of the global variable mapping? how can you be sure, that these blocks do not open screen information several times?

see also Live Development, Testing, and Debugging Tools
Taifun

Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun.

13

411418693d7861d6d173a72a70e8f5a034379437
411418693d7861d6d173a72a70e8f5a034379437784×574 34 KB

This makes no sense at all.

  • You ignore other button handlers by not checking the notAlreadyHandled value.
  • You ignore the component value, instead of using it as the lookup index into the 4 button components you set up as keys in the lookup table (name them like buttons, please)
  • You try to open the information screen 4 times, regardless of which button is pressed.

P.S. Sorry, Taifun, you buried the lede.

14

Ha ha... I missed the global variable... it was right there...

more valuable feedback now: :wink:

  1. the second item of a pair never is the text "mainmenu", so the if part never will be executed...
    usually you would use a MainMenu button handler for this assuming you have a button MainMenu in your project
  2. don't use a for each in list loop, try the loopup in pairs block to get the screen name you are looking for together with the key component
    How does the lookup in pairs block work?

see also this example A Multiple Choice Quiz: How to work with the advanced features

Taifun

15

I want to use Any Component block to:

  • There are 8 buttons in a vertical arrangement on screen 1.
  • When a button is clicked, it has to open screen 2, and in screen 2, open a specific vertical arrangement and also calls a specific function that renames labels and changes images in respective placeholders.
    *for eg: IF I CLICK THE DOG BUTTON ON SCREEN 1, IT OPENS SCREEN2 AND THEN IN THAT, OPENS THE "DOG" VERTICAL ARRANGEMENT, ALSO IN THAT VERTICAL ARRANGEMENT, IT HAS TO CALL A SPECIFIC FUNCTION, THIS FUNCTION RENAMES A LABEL TO "DOG" AND IN THE IMAGE PLACEHOLDER, CHANGES FROM THE USUAL IMAGE TO DOG IMAGE...

Please help, I need to complete this project very soon,
Thanks in advance

16

You can do this using start value.

17

how? i cannot figureout? please help... I shalll be thankful

18

Let's say if someone clicks on ButtonA then any button click will give ButtonA as component.
Now if component == ButtonA then open another screen with start value A.
On Screen2, if start value is A then hide all arrangement and set Arrangement A to visible.

1 Like
19

Can i use a list to get Button A or Button B? If yes, how?

20

Can you please roughly show the blocks?