How can I detect the movement of a Listview?
For my current project I need the Delta movement of a list-view. I'm putting in a tab-bar along the bottom of the screen which needs to scroll away and back when the listview moves down or up...
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Android slow StartUp time - SOLUTION!
My solution after 2 weeks of work, for StartUp time on Android Without AOT is Dual SplashScreen. Actually, there is no magic here. The same init time is remains. This solution is based on UX "Perceived...
View ArticleLet's talk performance
As we continue to release performance focused features and fixes, and build processes around performance, I want to have a thread dedicated to those items. Our public roadmap itemizes the feature work...
View ArticleXamarin debugger starts and then stops after one second on android device
Hello everyone. I started working on a xamarin application in the last few days. Since today I only debugged the app on UWP to not use any other devices like iOS or Android. Today I wanted to see how...
View ArticleTabbed Page is coming as DropDown Menu on Navigation Bar
On android tablet ,tabbed page is coming as drop down menu in portrait mode.In landscape mode it coming as tabbed but overlapping on navigation page.But on phones it is working fine.Any solution to...
View ArticleHow can a Button on a page update a data bound control?
I have the following XAML <Grid.RowDefinitions> </Grid.RowDefinitions> <Grid.ColumnDefinitions> </Grid.ColumnDefinitions> The code behind for the buttons sets StartTime (or...
View ArticleBundle Signing Page Blank
Using the latest stable channel release, the iOS Bundle Signing page is completely blank. Cant even change build configuration. This is using Visual Studio Mac. Anyone seeing this?
View ArticleVisual Studio Mac Crash - Entitlements.plist
I have updated to latest stable and now Visual Studio crashes when attempting to work with Entitlements.plist. Upon opening my projects I get "Value cannot be null - parameter name: obj" I had...
View ArticleView won't go away
I'm trying to use Facebook login with Xamarin.Forms and I've found that the only way seems to use Xamarin.Auth first on a platform-specific basis to get the auth token (there doesn't seem to be a...
View ArticleUriImageSource and authentication headers
How can I add authentication headers to the HttpClient that downloads the images (UriImageSource)? Outside of implementing custom image source is there a way to authenticate the HttpClient that XF uses...
View ArticleHow to set the background Color in the PCL for the UserDialogs.Toast
Hi: I have the following code, but is not accepting the Color saying: Error CS0433 The type 'Color' exists in both 'Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=84e04fs9cfb79065' and...
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ListView - DataTemplate Command Binding - Reference to ListView don't work?
Hi, I have a Listview: Opens ArtikelListCustomViewCell: Opens ArtikelDataGrid: Opens ListViewLabel: Command in ViewModel: public ICommand DoSomeCommand { get; private set; } DoSomeCommand = new...
View ArticleIndex '1' is greater than the number of rows '0'. (XF 240-Pre1 iOS)
Just updated to 240-pre1 and now I cannot add items to an observable collection bound to a ListView with Uneven Rows and Groups. Have only tried iOS so far. ObservableCollection<Group>...
View ArticleUWP displaying local pdf in pdf.js
All, I had a question that I was hoping someone has run across or solved... I am displaying local pdf's in a xamarin forms app using pdf.js. I used the following recipe verbatim.....
View ArticleImage Crop along with a square box using SkiaSharp?
Guys, Is there any way to load a image and place a rect or square box on it and then to save only particular part of the whole image using SkiaSharp? Please also help me out various other options to do...
View ArticleXamarin Forms iOS Button Click Event is not Firing when the keyboard is open
Hi All, I have a login view with a UserName & Password field and a Login Button. While entering UserName & Password the keyboard opens and when i click login now, the click event is not getting...
View ArticleScroll an action sheet in xamarin forms unit testing ios
How can I scroll an action sheet in xamarin forms unit testing? app.ScrollTo() is not working
View ArticleEntry Completed trigger Listview Refresh - MVVM
Hi, I have a Xam Forms App containing an Entry and a Listview. I've tried to implement the MVVM design but somethings still puzzle me. From what I understand, I will do the binding in the View(XAML)...
View ArticleForcing A Swipe For CarouselPage
Hello, I'm currently using CarouselPage to handle screen navigations. I currently have 3 screens. My problem is, I also have a Next button, where when the user clicks on it, it should go to the next...
View ArticleVS 15.3: Dynamic keyword throws PlatformNotSupportedException - Workaround?
Yesterday I happily updated to Visual Studio 15.3. After launching my Android app it crashed with a PlatformNotSupportedException at a line which is using the dynamic keyword. Searching the bugreports...
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