Initial support for a Xamarin "advanced" beginner
Hi. I'm a C#, Deplhi, Clipper and Pascal (among others) developer. I met Xamarin, and it was love at first sight, and I'm trying to learn with development challenges of serious applications. However,...
View ArticleHow to get the screen location (Bounds or Y) of an item in a listview using...
Is there a way to get the position on screen of an item (row) in a listview either from a selection or tapped event? Is there a way to get the position on screen of an item (row) using the index of the...
View ArticleCall UIImagePickerController from Xamarin.Forms portable
Hi, I have a Xamarin Forms app where all the UI is in a portable library. I'm trying to add functionality to pick a photo from the device so for this I have an interface class in my portable library...
View ArticleThe Name Navigation does not exists
Hi, I just encountered a strange error message. I try to Push a New Page on the Navigationstack from one of my ViewModels, but the Compiler tells me, that Navigation does not exist. Here is my File: {...
View ArticleBest way to create Thumbnails of images
Hi, I need the function in my app, that the user can pick an image from the image gallery and a Thumbnail of this Image should the be stored in a Zip-File. I have no problem accesing a stream of the...
View ArticleIssue with resourcecache folder with Debug
Hello, This is my configuration : VS 2015 with Xamarin Android tools, API 22 and 23 with all android extras up to date Project with forms 2.0.0.6490 and all nugets packages up to date. My app is with...
View ArticleAndroid keyword not recognized
Hello, This is my configuration : VS 2015 with Xamarin Android tools, API 22 and 23 with all android extras up to date Project with forms 2.0.0.6490 and all nugets packages up to date. My app is with...
View ArticleiOS Renderer using the RightView property of UITextField
I am trying to create a custom renderer for a Entry subclass so that I can show a tick or cross when validation passes or fails. The approach I have taken is as follows: Created a behavior that...
View ArticleMultiselect ListViews
I am new to Xamarin Forms and was wondering if we could build Multiselect Listviews using Xamarin Forms. Any help would be appreciated.
View ArticleSystem.InvalidCastException: Specified cast is not valid.
I've been trying to solve this one for a few days. Thought I'd put it out here and see if anyone can help me see something... The exception thrown {System.InvalidCastException: Specified cast is not...
View ArticleChange Slider Minimum programatically does not update slider in UI ?
Hi, I have an issue with Slider : At first my Slider has Minimum set to 50 and its value is 50, while Maximum is 100, so the thumb is located on the left of the track which is OK. Then programatically...
View ArticleEntry drawing
I have a custom rendering for an entry. The iOS flavor is a UITextField. I want to draw a thick white line on the bottom of the text. I tried overriding the Draw(CGRect) method, but I don't see any...
View ArticlePopup keyboard hides parts of the UI rather than resizing
I would like to create a screen that has a behavior similar to common chat apps e.g. Hangouts where there's a scrollable section of the page and an Entry with a Button underneath that updates the...
View ArticleHow to reuse my own custom render in another project ?
I created some custom render in my current project, now i start another project and want to reuse it. Does anyone help me, please ?
View ArticleHow to set AbsoluteLayout.LayoutBounds OnPlatform in XAML with AutoSize?
I tried this one but it didn't work <AbsoluteLayout.LayoutBounds> <OnPlatform x:TypeArguments="Rectangle" iOS="0, 1, AutoSize, AutoSize" Android="0, 1, AutoSize, AutoSize" />...
View ArticleAndroid ListViewRenderer
Hello, i am really in need of this Android's ListView Renderer exposition. Currently it cannot be extended " 'Xamarin.Forms.Platform.Android.ListViewRenderer' is inaccessible due to its protection...
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Anyone want me to blog about how to get really fast xaml cells in xlabs grid...
this video here shows some changes I made to achieve breath-taking performance. The last example is actually a grid view, with xaml cells, which in turn contain horizontal gridviews. I've not put these...
View ArticleSupport for Windows phone 8 in Xamarin.Forms.Dynamic pre-release
Hi Team, I am trying to developing an application for Windows Phone 8.0 with Xamarin Forms. I am trying to load the views dynamically using an xaml string. Please refer the link below:...
View ArticleTextbox in xamarin.forms
Hello. What is the corresponding of WPF's textbox in xamarin.forms?
View ArticleWinRT Entry issue
Hi all, I have the following issue with the Entry control on WinRT (only). If you override the Entry.TextChanged method (or use a Behaviour to do the same thing) when you amend the Entry.Text value,...
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