GridView doesn't reload their data
I have a GridView and I only can modify their attributes like ItemWidth, ItemHeight, Source, etc. when the page is created. After that, the grid object has the modifications in memory but the screen...
View ArticleDynamically adding items with labels to scrollview is extremely slow
So I have a horizontal scrollview that I'm trying to dynamically populate when the user takes a certain action. The items I am throwing into the view each contain 4 labels that are using custom fonts....
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TapGestureRecognizer not following view when using LayoutTo()
I'm using LayoutTo(); to create my own pseudo hamburger menu. Unfortunately, once the view moves, I can no longer tap it again to close it. It's as though the GestureRecognizer is no longer available...
View ArticleJava Out of Memory Exception
I'm testing an app on an LG phone. I am getting a Java Out of Memory Exception. The error is shown below. I literally have 7 images that are relatively small (100x100) loaded at this point in time. I...
View ArticleUsing messaging Center with "sender" type as message content.
We have been using the messaging center by having the "sender" represent the content of the message, rather than the actual "sending" class. For instance: MessagingCenter.Send(new...
View ArticleMissing controls in the Tool box
Hi, I'm using Xamarin Studio 5.8.3 (build 1). I can't find the EditText control in my Toolbox. Can anyone help me? Thanks.
View Articleimage posting best practices
Wondering what the best approach is to post images via RestSharp and WebAPI from a Xamarin Forms app. I'm thinking this is something I should background. Googled around a bit to see how people are...
View ArticleBinding to Picker Items
Hi, I believe it is not possible to Bind in XAML to the Items property of the Picker control. If this is the case, which is the best approach to populate the Items collection from a ViewModel...
View ArticleHow to scroll to last item in ListView
Hello. I'm using Forms 1.4.2.6359 and I have a ListView with HasUnevenRows = true. I'm trying to get the ListView to scroll to the last item in the list after its ItemSource is asynchronously populated...
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Xamarin Forms + Maps
Hello, I'm getting errors which i don't know if are bugs or just my dumbness I create a new project (shared or portable, gets the same result). Try to add Xamarin.Forms.Maps to all projects, and get...
View ArticleListView.ItemAppearing works for a ViewCell but not triggered for a cell...
The ItemAppearing event for ListView is triggered for a ListView with ViewCell itemTemplate whose item template has not been rendered in iOS or Android but is not triggered when the ViewCell is...
View ArticleWinRT tablet/desktop doesn't always show TabbedPage TopAppBar on right...
I have a an app with a MasterDetailPage and a TabbedPage is set as Detail. On WinRT, the TopAppBar with the TabbedPage icons doesn't always show if I right click or swipe down from the top. I have to...
View ArticleChange and control device orientation programmatically in Xamarin.forms
Hi, Is there any cross-platform way to change/control device/UI orientation programmatically in Xamarin.forms ? Suppose i an writing a cross-platform app using Xamarin.forms where i have 2 pages. After...
View ArticleException in Navigation Bar Back Button
Hi Friends. I'm on android (iOS, no problem) I have a "navigation page" root page I do a pushAsync to open a child page. If I press the back button present in the navigation bar, I have this exception...
View ArticleMasterDetailPage Icon would not update correctly on rotation still happening
Hello, On XF 1.5.0.6446 release notes there is a bug that has been "fixed" but is still happening. Other Fixes [iOS] MasterDetailPage Icon would not update correctly on rotation I have a...
View ArticleHow to use and create Ellipse in OpenGL or OpenTK
Hello, I am new to OpenGL and as i have search for OpenGL i get to know OpenTK is API to use OpenGL in Xamarin. I am not sure how to start with OpenTK. I wanted to draw an ellipse with anti-aliasing in...
View ArticleNavigation.PopAsync(true) shows blank page
Hello everyone, i'm currently fighting with a very strange behavior on Android devices. My app is developed with Xamarin Forms and should be available on iOS and Android. I'm using a...
View ArticleGetting ViewCell content in ListView.ItemSelected
I'm having an issue with ListView in XAML. I try to achieve a ExpandableList with opening animation. For this I wanted to use a ListView and StackLayout. In the ItemSelected event, I would like to add...
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Notification to PCL when WiFi state changed?
Good afternoon everyone- I have a quick (hopefully) question regarding receiving a state change notification for WiFi connectivity. The simple version: How do I get notification in my PCL that WiFi...
View ArticleService crashes if there is no UI
That happens after a restart or after the user forces the app to stop. The service (intercept a sms) doesn't get called, but I get a message "App X has stopped". I know it doesn't get called because I...
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