I have the same problem with Xamarin Forms (v 2.5.0.280555). There're 2 ways that this error will occur (v100.2.1). 1: Normal Cross Platform Project. If I change Android MainActivity: - Change FormsAppCompatActivity to FormsApplicationActivity (it is needed in case to show better GUI in master detail page below) - Comment out TabLayoutResource and ToolbarResource - Remove: Theme = "@style/MainTheme" 2: When using Master Detail Page - It run normally if the map run on the first Navigation Page (default detail page) But if I put the map on another Detail Page and load later or on the Detail Page has a button to show map. It give the error libRuntimeCoreNet not found The Xaml and code is from the default MasterDetaiPage and this tutorial page: ArcGIS map image layer (URL)—ArcGIS Runtime SDK for .NET Samples | ArcGIS for Developers Any suggestion to fix this problem?
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