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System.ArgumentNullException when testing on Motorola Nexus 6

I am having a very weird issue with my Xamarin.Forms 1.5.0 app. I have been testing and debugging it in the Android emulator on my Windows 10 PC without any problems. When I connected my Motorola Nexus...

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XamlSamples doesn't compile w/Xamarin Studio & iOS

When I attempt to compile XamlSamples I get the following compiler error: AppDelegate.cs(20,37): error CS0234: The type or namespace name `App' does not exist in the namespace `XamlSamples'. Are you...

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New Project Out of the box so to speak; assembly not found System.Runtime

Created a brand new project Xamarin.Forms.Shared; Went to NuGet to update Xamarin packages; after update I get the following errors. First error shows up on Application. I can't find an assembly called...

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Attribute "circleCrop" has already been defined (APT0000) common_attrs.xml...

I upgraded from Xamarin.Forms.Maps 1.4.0.0 to 1.5.0.6447. My solution contains several projects, including a lot of PCLs, two Android, and two iOS projects. Everything was building fine before the...

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How to change background image of action bar

Hello, I have a master details page, I cana set the background color of the action bar by this: var navigon = new NavigationPage(new MyPage()); navigon.BarBackgroundColor = Color.Teal; But I need to...

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selecting on item at a time in Listview

@TorbenKruse , Hi Torben, Please guide me how to select only one list item at a time in the example that was guided by you. Please find the below github link of your example....

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What is this: onDecode : Qmage(frame, header) Log? app crash

Hello everyone, My Android App is crashing without errors but before the crash in the console log on VS appear many many of them: onDecode : QmageFrame, QmageHeader and etc... but i have no image in my...

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iOS WebView doesn't resize Width on device rotation.

When I drop a WebView into a view, I'm having an issue whereby when I rotate the device, the WebView stays the same width as it was initially. note: I always start out vertical, so rotating horizontal...

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Not Understanding Creating Shared UI using Xamarin Forms

Hi, am new to xamarin forms, my doubt is that when we create a portable library and define UI controls for both IOS and Android, can we use controls like "Image Buttons " those are having different...

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File Upload not working in iOS 9.0.2 working in 8.4

Hi, I am loading my website in WebView using Xamarin.Forms. It has file upload button to upload file from device. I am able to upload device files in iOS 8.4, while testing in iOS 9.0.4 onclick of file...

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How to show Animation in Page Transitions ?

Hi All, I'm building a XForms app where I'm using Tabbed Page control. But while Navigating to another page the transition of the space occupied by tabbed page is observable quite clearly which...

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XLabs.Forms checkbox not working in iOS throwing exception

I Created Xamarin.Forms PCL project to work on CheckBox in Xamarin Studio(5.7) in Mac environment. I added XLabs.Forms package from Nuguet Package. CheckBox is working fine in android. But when i run...

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Incorporate CocosSharp/MonoGane with Xamarin.forms

Is there any way to incorporate CocosSharp with Xamarin.forms and Vice versa. I have an application under development which has some "game like" functionality like dragging and rearranging views. So I...

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Changing navigation bar back button text (

Hi, I need to customize the text and color of navigation bar back button text and '<' to white. For back button text , am doing like this In appdelegate,...

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Xamarin.Forms mixed with MonoGame?

Hi, would this be possible? I mean, there is an OpenGL-View, but I want MonoGame/XNA-Code inside them. Thanks. Regards ps. Xamarin.Forms is like my GitHub-WPFLight Project, but with more native feel.

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How to implement a Pop Up window in Xamarin Forms?

Is there a way to implement a Pop Up window in Xamarin Forms where you can put images, label, etc. and dynamic? Especially in a Map? Is there any generic implementation. Let me know. Sample code would...

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Just updated Forms app to use AppCompat using James Montemagno's excellent guide

Link to guide: https://blog.xamarin.com/material-design-for-your-xamarin-forms-android-apps/ Im seeing a strange behavior when using the above guide. It seems that my app does not render the "dark...

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Exception while running ibtool: -[IBUViewControllerAutolayoutGuide...

I'm running into a problem in my PCL project. Whenever I try to debug the iOS portion, I get the following error: Error 2 Exception while running ibtool: -[IBUIViewControllerAutolayoutGuide...

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FontAwesome Label: Here's how!

Here's how you'll use the new FontAwesome label (Any Graphic font will work, but FontAwesome is Awesome): var coolLabel = new FontAwesomeIcon(FontAwesomeIcon.Icon.Gear) Here's how to set it up....

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Unable to deploy app in android mobile

Hello All, I am unable to install the app in my android mobile in debug mode. I have check listed the following things. 1.Put the mobile in debug mode 2.Giving permission to app while installation....

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