Most voted "xamarin" questions
Use this tag for questions about the Xamarin platform, which enables you to develop native mobile apps for iOS and Android using C# in Mono or Visual Studio. Ideally a specific framework/product tag should be used, unless the problem is general for all editions.
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answer287
viewsSet Top Bar Burger Menu
I made an app with a Login screen to a Mainview that is a Masterdetail and a Detail. It is working correctly but the top screen is larger than normal, as per image; as I set it to be the correct…
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answers186
viewsHow to recover a string from another page in Xamarin?
I’ve seen several examples of how to open a page by sending a string to it but I wanted an example of how to do the opposite, open a page and it returns a string when it is closed. My life is more…
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answer70
viewsDoubt about which Inheritance to use in the Entity Framework
I only had the opportunity to use the EF basically 1x. Therefore, I am with many doubts, even consulting a lot google. I have a client application that will take various data from the logged user’s…
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answer791
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answers1026
viewsThe task "Xamarin.Forms.Build.Tasks.Gettasksabi" was not loaded from Assembly
That’s the mistake I’m taking: C: meu_caminho Packages Xamarin.Forms. 2.5.0.122203 build Portable-win+net45+wp80+win81+wpa81 Xamarin.Forms.Build.Tasks.dll. Confirm that the statement is correct, if…
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answer153
viewsEnable navigationbar or create a panel on top of the Xamarin.form tabpage
I have this page (Tabbedpage) that creates two tabs: <?xml version="1.0" encoding="utf-8" ?> <TabbedPage xmlns="http://xamarin.com/schemas/2014/forms"…
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answer865
viewsChanging the bar color of a Navigation page
I have it: public void Login_Clicked(object sender, EventArgs e) { LoginService svc = new LoginService(); LoginRS res = svc.Login(txtUsuario.Text, txtSenha.Text); if (res != null &&…
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answer103
viewsCenter a label on a badge
I’m not able to center a label inside a badge. It seems that the label is outside the badge. See the code: <Grid xmlns="http://xamarin.com/schemas/2014/forms"…
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answer322
viewsTitle in Masterdetail - Xamarin Forms
I need to have title "Main Screen" in a Masterdetail that I have, is possible? <?xml version="1.0" encoding="utf-8" ?> <MasterDetailPage xmlns="http://xamarin.com/schemas/2014/forms"…
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answers302
viewsHow to use credentials on an Httpwebrequest
I’m trying to capture an image from an IP camera. In the first model tested, it worked normally, since the model in test did not require credentials to return the images as a array de bytes because…
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answers15
viewsError when navigating between screens with Xamarin IOS
I’m having trouble calling a second Viewcontroller within the method Rowselected in a class that contains the interface Uitableviewsource, while making the flame even instantiating the…
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answer97
viewsTask List<T> showing Xamarin error
I am creating a Task List<> but the same shows error in 'Tmodel' Error shown: "Tmodel" type or namespace name cannot be found (using a directive or Assembly reference?) public async…
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answer293
viewsUsing Grid with Absolutelayout - Xamarin Forms
I need to use it on a screen Grid(to organize the Entry and Buttons) and AbsoluteLayout(to have the waiting ball (or Loading) in the middle of the screen). If this is done the screen layout is…
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answer64
viewsProblem with custom control
I created a custom search bar with an entry. I need to get the text of this entry to be a search parameter. So I created a custom property that uses the Text property from entry. But this custom…
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answer73
viewsConsuming a Web Service Asp . Net Xamarin application
I want to make a request to a Web Service developed in Asp . Net passing two parameters to my server. The controller in the web Service this asism: public HttpResponseMessage Get(string id1, string…
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answers148
viewsHow do I know if an Itemtapped has been clicked?
I have a ListView with a function so that every 30 seconds ListView be updated. When it is triggered click on an item of mine ListView another screen at that time is called and unfortunately the…
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answer165
viewsHow to show / hide a button inside a listview
Man ListView is populated with data that comes from an API, but within my template I have a label statusDescr where it shows two states ("paid" / "canceled") when the status on the label is paid the…
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answers36
viewsHow do I open a specific PDF page with Xamarin (iOS)?
I use the following code to open a PDF document. I would like to know how to open the PDF on a specific page, because every time I run the code, the document opens at the beginning. public void…
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answer235
viewsXAMARIN - List View with Binding without Information
I’m doing a project with Xamarin.Forms and I have a problem. The project is related to the bus route of my city, but when making the code and playing to the screen, as much as it has BINDING the…
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answer412
viewsWhat does it mean to say that, an app is Webview? What is the relationship with Xamarin?
Starting studies on a Xamarin project, I found a number of nomenclatures and some explanations that seem contradictory, so I have some doubts: I heard that Xamarin and Xamarin.Forms, NAY are…
mobile xamarin xamarin-forms webview progressive-web-appsasked 5 years, 10 months ago Cedric S. 323 -
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answer180
viewsXamarin iOS - How to generate an ad hoc using VS with remote Mac
technical doubt! I have an iOS Xamarin project, I’m using a virtual iMAC with Xcode hired to run the application in a simulator. I make the pairing connection and rotate the application. Slowness,…
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answers81
viewsPhonedailer function with Serialport
I am implementing a c# application that needs to be automatically dialed. Searching I found a function Phonedailer.Open that receives in parameter the number of the phone. However I do not know the…
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answers260
viewsHow to create animated effect (shadow, Pulse) for Xamarin.iOS?
How to create the effect in blue (shadow? Pulse?) as in the gif below in a Uibutton or Uiimage in Xamarin.iOS?…
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answers252
viewsXamarin with Web Services - Slowness and Timeout
I developed an application with Xamarin using web services and is worrying me the fact that the communication by 3G is not working legal, has given a lot of timeout and this error "Error Getting…
xamarinasked 10 years, 10 months ago user1271442 73 -
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answers1193
viewsMore than one *Layout* in the app
How do I instantiate a new screen, I have the Main.axml And I wish that when I hit the button I’d call my own Result.axml. I wonder how I do it in Xamarin in C#. And if I need 2 Activities’s one for…
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answer689
viewsFind files on Xamarin Android
I am putting an xml file inside the project but it is not being located by my XmlTextReader where in the project I should put this file and how to find it in the emulator folder? I’m using Xamarin…
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answers77
viewsHow to collect internet usage information for iPhone with Xamarin / monotouch
I need to collect internet usage information on iphone , the code c# below that I am using only returns me zeroed values. I’m using the right class ? has some reference I need to add on Xamarin ? in…
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answers149
viewshow to measure speed in mobile broadband traffic on 3g or mobile wifi programmatically on iphone
In the app, I’m already collecting traffic on iphone, now I need to check how to measure the speed in mobile broadband traffic on 3g or in the wifi programmatically. For example: Every 1 minute or…
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answer80
viewsIs it possible to integrate a windows Builder into Xamarin for Mac?
I’m currently using a Mac, but would like to continue using C# and create new GUIs, since I didn’t create much. So I looked for a solution to use C# for the Mac, and found the Mono framework, which…
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answer598
viewsHow do I navigate between pages on windows phone 8.1 using mvvmcross?
I’m browsing between pages on Windows Phone 8.1 using the following call: ShowViewModel<DetalheViewModel>(); When I click the button come back the app closes. How do I implement the back…
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answers4443
viewsHow to create a login screen using Xamarin?
What is the best way to create a login screen using Xamarin Studio? I’d like to do a project Cross-Platform, but wanted to see some examples of Login with c# and preferably using the Xamarin.…
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answers1341
viewsDynamic Graph using Xamarin Forms
I’m new to Xamarin, I know there must be components ready for what I need. I need to create a chart like this: http://www.highcharts.com/demo/dynamic-update I used this in Phonegap (Html5 + JS), now…
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answer975
viewsAdd Xamarin.Forms Package Problems
I’m starting some projects with Xamarin Studio, I’m having some problems and I still can’t solve always appear these 2 errors, I looked at a solution in stackoverflow.com, but the solutions given…
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answer3938
viewsIs Xamarin a viable option for mobile development?
I need to develop for mobile and I was thinking of Xamarin as an option, and then I went to do some research and found out that: The Xamarin is paid, and the price is half salty for a cheap…
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answer301
viewsWhat to use to create web site and android app
I want to create a website to host manga or link the sleeves of Fansub. Let’s say a Manga Host and create an app on android to visualize the sleeves without having to enter the site. How can I do…
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answers106
viewsHow to connect Xamarim with Visual Studio 2015?
Hello, I downloaded Visual Studio last week with the main goal of mobile development. Visual requested the installation of Xamarim and the like, and I did everything, however, after all…
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answers28
viewsXamarin error - "Connection to the layout Renderer failed"
Every time I try to open the Main.axml file this error appears : I don’t know how to fix it, someone can help ?…
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answer125
viewsSketch Component for Xamarin Forms
I wonder if there is a component for Xamarin Forms that allows me to draw in a photo taken by the device or that is in the gallery. Below are examples of how it would be:…
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answer779
viewsXamarin Forms - Plot GPS route
Good evening! Does anyone have an example of how to use GPS in Xamarin? I’m developing a project (PCL), which would plot the route between two points, but I’m still having some doubts. I can trace…
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answer101
viewsXamarin.Forms configuration
Good morning! I’m trying to build an application Xamarin Forms in a windows 8.1 When I installed the xamarin and try to start a project, he asks me to add a MAC. Is it necessary to add it? and if it…
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answer115
viewsStore contact information on android Xamarin
void button_Click(object sender, EventArgs e) { //Create a new intent for choosing a contact var contactPickerIntent = new Intent(Intent.ActionPick,…
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answers223
viewsXamarin - Load Frame with Image inside a Contentview
I want to change this Sketch so I can draw in a photo. I lowered the github and I’m making the modifications. However, I am not able to load an image on the screen when setting the Image Source.…
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answer44
viewsEmulator only runs old applications
I created an app some time ago and I’m creating another one now, but when I start the emulador, the app that appears is the old. I can’t touch the new app on the emulator. What might be going on ?…
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answers228
viewsUsing asymmetric encryption between Xamarin PCL Client and Web Api
I have a problem creating an asymmetric encryption between my client App using Xamarin Forms (PCL) and the server (Web Api). I did it using symmetry and they asked me to modify it. I already do…
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answers61
viewsFailed to load Resouces from a Resource File
I’m trying to make my Xamarin application internationalize. I followed the tutorial (https://developer.xamarin.com/guides/xamarin-forms/advanced/localization/) that works on Android, however, when…
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answer960
viewsBrowsing between Pages
I’m making a sales order app with Xamarin, but I am with a problem, in flame ruma page search, and return the selected value to the page I was. I will explain further below. Screen 1: Order…
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answers40
viewsAndroid - Activity shows no xml components
I’m starting with Xamarin studio and why not even show the "hello world"…
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answers181
viewsProblems with Xamarin in Visual Studio 2015
I’m starting to "play" with mobile development and as I already develop in C#, I wanted to use Xamarin. But, as soon as I installed and update/installed everything I had in the android SDK manager.…
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answer1616
viewsCreate a Web Api that calls another Web Api
I created a Web Api here in my work to be consumed by my project Xamarin Forms. It’s working 100% and no problems... Then I was informed that actually here we use 2 web api s for security. That is,…
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answers344
viewsHow to put items in a Listview
The method add doesn’t show up, I’m new so I have no idea what it could be protected override void OnCreate(Bundle bundle) { base.OnCreate(bundle); // Set our view from the "main" layout resource…