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Performance Issues when using ViewCell in ListView
The title says it all. My application uses a listview with a custom layout which inherits ViewCell and the performance is terrible on android. If I use ImageCell or TextCell the performance is good...
View ArticleContentView Command binding
Ive run into a problem trying to access command that exist in the code behind, basically this command doesn't fire. OK you might say for button use the Clicked Event, errr!, but there are instances...
View ArticleHandle SSL certificate warning in a Xamarin.Forms.WebView control
Is there a way a can handle the server certificate warning message when a user view a website through the Xamarin.Forms.WebView control? I am testing my application against a development site were my...
View ArticleNested ListView itemtapped problem on android and some other observations on...
Hi - I know you shouldn't use nested listviews, but had this working nicely - the only problem is that on android, if you tap an item in a nested listview, the ontapped event handler fires once... if...
View ArticleDisplaying different class instances in a ListView
Let's say I have a super class called Vehicle. Furthermore I've have three subclasses called Motorcycle, Car, Boat. In my app I want the user to be able to list all of his/her vehicles, that is I want...
View ArticleHow to make a ListView GroupHeaderTemplate wrap it's content in iOS?
I've got the following GroupHeaderTemplate. Unfortunately, the inner StackLayout isn't behaving as I'd hope... what might I be doing wrong? FYI: It appears to work proper in Android. <ListView...
View Articlelabel inside scrollview display outside in android
I put label in the Content so that inside th scrollview; string lrc = "...";//the string display in label mutililine so that it should contained in a scrollview var stackLayout = new ScrollView() {...
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How can I create a custom renderer for a decorated "container" view with...
I'm basically trying to create a custom "container" view, which will render differently on each platform, but its content will render the standard way. Specifically this would be like a menu item which...
View ArticleBug: DisplayAlert in iOS can throw exception
When running this statement in Android it works fine and display alert only shows one button: this.DisplayAlert("Facebook", "Facebook button", "OK", string.Empty); When running the same line in iOS I...
View ArticleHide top/master switch in the Xamarin Switch Cell control?
Is there a way to hide the top/master switch that appears when you use the Xamarin.Forms.SwitchCell control in Android? It is very annoying to have this extra switch when it does not appear in either...
View ArticleSystem.Reflection.AmbiguousMatchException exceptions during the creation of...
We see a lot of System.Reflection.AmbiguousMatchException exceptions during the creation of all our ContentPages. They seem to be handled by Xamarin code but slow down the page creation. Does anybody...
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Lack of GridView in Android force me to make our new app using Android C#...
Hi Folks, I've been using XF for our iOS project for a month. So far I can build Most Custom UIViews with CustomRenderer. But the new project will be aimed for Android Device only, and the major...
View ArticleFailed verification publishing my first forms app to the Apple AppStore
Built my release, signed it submitted it. All great (after a bit of messing with keys!) However its failed verification by Apple. It seems if you use a Bluetooth keyboard and press the tab key on a...
View ArticleSearchBar:Missing method Android.Widget.SearchView error
Update: I sorted out the problem: i set the target framework to 4.4; before it was 4.0.3. Thanks Alessandro Hi on my phone (v4.0.3 -Ice Cream Sandwich) I start having this error once i upgraded to...
View ArticleHelpful Repositories
I have been working with Xamarin Forms for a couple months and in the process I have found a few repositories very helpful. Here is the list of repos : https://github.com/xamarin/xamarin-forms-samples...
View ArticleXF and Cocos3D (3D Scene loading)
HI CocosSharp is a C# implementation of the Cocos2D and Cocos3D APIs that runs on any platform where MonoGame runs (https://github.com/mono/CocosSharp ). Cocos3D can probably load a model/scene created...
View ArticleWinPhone with Master/Detail...How do I disable opening the Master?
This works fine on iOS and Android, by the way. Anyhoo, my app has a Master Detail setup. Some of the Detail pages have the ability to add items to them, which brings up another page. You enter your...
View ArticleSelect from a Gallery image in Xamarin.Forms
Hello, i'm starting a new project to manage user's contacts on Xamarin.Forms. I know that DependencyService is useful to access native features on each platform, and i can use ImagePiker in iOS or an...
View ArticleNullReferenceException on MasterDetailPage
Hi Guys. I'm currently getting this error when loading MasterDetailPage. I'm updated to the latest version of Xamarin.Forms 1.2.2.6243 System.TypeLoadException: A type load exception has occurred. at...
View ArticleHow does MessagingCenter work between classes?
Hi everyone, I'm stuck at getting MessagingCenter working between classes. I only can get it to work in the same class. Can anyone point out an example how this works? I looked already at the...
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