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XAML Relative Layout calculations

Hi guys, a question re XAML forms, how can you work out dimension calculations in XAML forms for a relative layout. Imagine you want to display a box height 100, width 100 in the middle of the screen....

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Object Reference error updating Xamarin.Forms to 1.5.1.6471

Hi All, I'm using NuGet to update my Xamarin.Forms application to 1.5.1.6471 (I'm on a 1.4 version) and am experiencing an object reference not set to instance of an object error when doing so. Has...

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how to select the image from local(memory) using xamarin forms(android,ios...

i tried select image from local memory using cross platform... but more sites are written code in individually. please help me

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SlideoutControl and ViewFlipper

I recently added a SlideoutControl and a ViewFlipper. Both controls are 100% shared code. Grab it on GitHub: SlideoutControl lets you slide out any type of content fromt he left, top, right or bottom...

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How to get the automatically set width of a Label?

I have a Grid and a Label in a column of the Grid. The Width of the ColumnDefinition of the column containing the Label is “GridLength.Auto”. Then the “Width” property of the Label returns –1. How do I...

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Get current Uri from HybridWebView

Hi I would like access to the actual Uri of either HybridWebView. I need it to watch for a certain url pattern during redirecting. The Uri property of HybridWebViewdoes not seem to ge updated when...

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Hamburger Icon gets clipped in Masterdetail page

Hi everyone, I have a problem with my Masterdetail page Hamburger Icon. I have a combination of Master detail page and a tabbed paged. When i navigate to any tabbed page and then make any selection on...

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Any help with deploying Xamarin Forms app to iphone device

Hi, I want to deploy and test my application on a physical iphone device from Visual Studio. I do have a Apple developer account, Mac, PC, iPhone and the usual. Any help or steps I could follow would...

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Change the icon of back button

Hi All, Can anyone help me to change the icon of back button using Xamarin forms. Many many thanks to you in advance. Thanks, Praveen

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Changing ListView's ItemsSource causes an out of range exception in Windows...

There appears to be a bug in the ListView control for Windows Store apps. If you try to change the ItemsSource after it is loaded it throws an exception. The same exception is thrown if I initially...

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Is it possible to have PullToRefresh in ScrollView?

Hi to all. Is there any way to have PullToRefresh in ScrollView? I need this feature in ScrollView instead of in ListView. Thanks.

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FastCell on github - silky smooth scrolling in ListView while using XAML

The xaml in the complex example is really over-the-top (3 stack layouts, and 9 images) and performance is still good. Let me know how you get on! Implementation is very easy and unobtrusive....

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Label gets blank on updating Listview

Hi, I am using listview in xamarin forms. It has the viewcell function like this public class VetCell : ViewCell { public ViewCellModel ViewCell; public Label SerialNum = new Label(); public Label...

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Deselect selected item of ListView

Hi, I want to deselect already selected item by click. So the user first clicks an item and it becomes selected, then user clicks same item once again and it should become deselected. Following code...

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Opacity incorrectly blends with black

I'm seeing a bug when setting Image.Opacity to any value between 0.0 and 1.0. It will blend the image (or the background color if there is no source image) with black, instead of becoming translucent...

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Hiding/Showing layouts

Hi Experts, I'm wondering if anyone has any ideas on hiding and showing sets of controls. I have a segment on a page and I want to switch which controls are visible. Thanks much!

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Xamarin.Auth for Instagram "riderect URI" problem

I smashed my head over it to make it work with no success: Using this tutorial as a base. new OAuthSettings ( clientId: "4777d948cd5***********", // OAuth2 client id scope: "likes", // The scopes for...

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System.IO.Compression It does not work - Microsoft.Bcl.Compression

I've a xamarin form project, when i use this code ... var re =await client.Execute(request); var gs = new GZipStream(new MemoryStream(re.RawBytes), System.IO.Compression.CompressionMode.Decompress); .....

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Exceptions in Visual Studio with latest Xamarin

I just updated Xamarin to get some of the new features of the ListView control. Now when an unhandled exception is thrown instead of stopping at the exception with the exception detail window it just...

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AddSubview and Custom PageRenderer in Android

Hi there I am writing a PageRenderer that simply adds a menu control to the bottom left of the page. Using iOS the renderer is easy because I can simply use View.AddSubview (button); and it works...

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