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androidapp-inventor

List changing value from boolean "true" to "3"

So i'm using AppInventor 2, when i load my screen i have passed a list in from a previous screen as the start value for the current screen

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Here we can see that the list is set as (true, true, 1,0,0,0) which is what it's supposed to be but when i try to edit it in the next screen:

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can anyone shed some light on what is happening here???

Solution

  • use the select list item block to select an item from a list
    enter image description here

    the index in list block will give you the index of a specific thing in a list... the thing you are looking for is 1, so the result is 3 in your example

    see also the documentation http://appinventor.mit.edu/explore/ai2/support/blocks/lists.html#selectlistitem