Crash(iOS): TypeError: undefined is not an object (evaluating 'measureSpec.setColumn') #7226

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1. NickIliev

   added

   os: ios

   bug

   needs more info

   on May 10, 2019
2. m-abs commented on May 10, 2019

   

   m-abs

   on May 10, 2019

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   Hi @NickIliev
   I see you've requested more info.

   Unfortunately I haven't been able to write a test project that reproduce the problem.

   I can reproduce it in our private app, but I can't share the code.

   I've create a small PR that fixes the problem locally, but I'd really wish I had a proper way to reproduce it.
3. m-abs commented on May 10, 2019

   

   m-abs

   on May 10, 2019

   ContributorAuthor

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   I've identified the components in our project that causes the problem.

   The View tree is like this

   Frame(2)
     Page(8)
        ProxyViewComponent -> library tabs component
           GridLayout(13) rows="*, auto, auto"
             ProxyViewComponent -> bookshelf component
                ProxyViewComponent -> lyt-failed-retry.component
                   Stacklayout(44) < This is the child that is missing the MeasureSpecs in the GridLayout(13)
                      Stacklayout with *ngIf="false"
                          2x Label
   

   Here is the template for lyt-failed-retry.component:

   <StackLayout>
     <StackLayout *ngIf="failed" class="p-5">
       <Label [text]="failedText" textWrap="true" class="t-14 text-center text-danger"></Label>
       <Button [text]="retryBtnText" class="btn btn-rounded-sm btn-outline" [accessibilityLabel]="retryBtnText" (tap)="onRetry()" touchable></Button>
     </StackLayout>
   </StackLayout>

   Here is how it is used in our bookshelf.component:

   <lyt-failed-retry [failed]="isBookshelfFailed$ | async" (retry)="onRefreshFailed()"></lyt-failed-retry>

   If switch from <lyt-failed-retry... to <StackLayout lyt-failed-retry... and remove the top StackLayout from lyt-failed-retry.component the problem goes away.
4. m-abs commented on May 12, 2019

   

   m-abs

   on May 12, 2019

   ContributorAuthor

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   Hi @NickIliev,

   I've finally managed to reproduce the problem see: https://github.com/m-abs/tns-measurespace-undef

   We have a outer GridLayout in our base component and first grid item is another tns-angular component sub1 enabled via *ngIf:
   https://github.com/m-abs/tns-measurespace-undef/blob/master/src/app/home/home.component.html#L6

   The sub1-component includes another tns-angular component sub2.

   The sub2-component have an outer StackLayout, it doesn't matter this layout have any children or not.
5. manoldonev

   self-assigned this

   on May 22, 2019
6. manoldonev

   closed this as completedin #7230on May 31, 2019
7. manoldonev

   removed

   needs more info

   on May 31, 2019