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ZXing cross platform barcode scanning - not working on IOS

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Hi All

On our Xamarin forms app, I am trying to use the ZXing cross platform barcode scanning implementation hosted here https://github.com/aritchie/acr-xamarin-forms

This works grate on android, but on ios it not launching the camera or anything, I tried putting the try-catch, but it don't not catch any exceptions

But in the Output window get the below message

2014-08-29 12:23:57.920 FormsTemplateiOS[1041:60b] Warning: Attempt to present on whose view is not in the window hierarchy!
Thread started: #15

But when i buid a stand alone app with same code it works fine.

Can you please advise the a fix for this?

Thank you
Asanka


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