Stack Overflow
Stack Overflow

Questions tagged [windows-phone-8.1]

Windows Phone 8.1 is a major update to Microsoft's Windows Phone 8 operating system. It was announced at the Build Conference in April 2014.

Windows Phone 8.1 introduces new functionality compared with Windows Phone 8.0, in the form of two new API sets:

  • Windows Runtime (MSDN), all APIs with a phone icon on the documentation page is available on WP8.1. This applies to the "Universal App" project types. Many of these APIs are shared with Windows Store applications (aka. Metro or Modern applications), allowing you to have the same code-base for both Windows and Windows Phone applications. Consider using and/or for questions about Universal Applications, to distinct them from Silverlight 8.0/8.1 questions.

  • Silverlight (MSDN) applies to Silverlight 8.0 and Silverlight 8.1 APIs. There's no specific distinction on MSDN for 8.1 only APIs.

  • Improved and security.

  • New APIs for .

MSDN also have a mixed list of the two above for What's New in Windows Phone 8.1 (MSDN), primarily targeting the Windows Runtime features.

Official developer resources are available at dev.windowsphone.com.

Learning resources

7701 questions
202
votes
4 answers

How to POST using HTTPclient content type = application/x-www-form-urlencoded

I am currently developing a wp8.1 application C#, i have managed to perform a POST method in json to my api by creating a json object (bm) from textbox.texts. here is my code below. How do i take the same textbox.text and POST them as a content type…
Prince Achim
  • 2,031
  • 2
  • 8
  • 7
62
votes
6 answers

Universal Apps MessageBox: "The name 'MessageBox' does not exist in the current context"

I want to use MessageBox for showing download errors in my WP8.1 app. I added: using System.Windows; but when I type: MessageBox.Show(""); I get error: "The name 'MessageBox' does not exist in the current context" In Object Browser I found that…
sprrw
  • 623
  • 1
  • 5
  • 4
55
votes
3 answers

JSON.NET DeserializeObject to List of Objects

I'm trying to Deserialize object to list of object using JSON.NET lib. My json file is: [ { "id": 1, "name": "Poczta", "description": "Opis", "latitude": 52.25197, "longitude": 20.896355, "accuracy": 0, "type": "", …
Criss
  • 725
  • 1
  • 6
  • 12
48
votes
3 answers

Hide Status bar in Windows Phone 8.1 Universal Apps

How to hide the Status bar in Windows Phone 8.1 (C#, XAML)? In Windows Phone 8 it was done by setting shell:SystemTray.IsVisible="False" at any page. But its not available in Windows Phone 8.1
Kalyan
  • 1,395
  • 2
  • 13
  • 26
46
votes
6 answers

Disable web page navigation on swipe(back and forward)

On a Windows phone, in IE users can go back and forward by swiping on the screen if the swipe is coming from the edge. This OS level functionality is hampering my webpage's UX. Is there any js or css which can disable that? Some hack would also…
Shekhar Joshi
  • 958
  • 1
  • 13
  • 26
46
votes
3 answers

System.Net HttpStatusCode class does not have code 422

Is there a way to handle http status code 422 gracefully. I am looking for the best practice here. I know that HttpStatusCode is an enum so what i tried is this, HttpStatusCode Unprocessable = (HttpStatusCode)422; if (Response ==…
golldy
  • 1,279
  • 1
  • 15
  • 31
43
votes
1 answer

Using Client certificates for Windows RT (windows 8.1/windows phone 8.1)

I am trying a new feature of windows 8.1 and windows phone 8.1 namely the certificate stores and possibility to use client certificates for client authentication on the server side. However I am having problems with this functionality. I have a…
marek_lani
  • 3,895
  • 4
  • 29
  • 50
37
votes
4 answers

Windows Phone 8.1 - Page Navigation

Coming from Windows Phone 8 I have never thought there will be a lot of changes done to the Windows Phone 8.1 code. Basically I'm just wondering how to do page navigation just like how you would do it on Windows Phone 8. To do that you should…
Ahmed.C
  • 487
  • 1
  • 6
  • 17
36
votes
4 answers

Animate (smoothly) ScrollViewer programmatically

Is there a way to smoothly animate a ScrollViewers vertical offset in Windows Phone 8.1 Runtime? I have tried using the ScrollViewer.ChangeView() method and the change of vertical offset is not animated no matter if I set the disableAnimation…
Kristian Vukusic
  • 3,284
  • 6
  • 30
  • 46
36
votes
1 answer

Suspending event not raising using WinRT

I'm having a problem with suspending event on Windows Phone 8.1 using WinRT, it does not fire. I don't know why. This is my code: /// /// Initializes the singleton application object. This is the first line of authored code /// executed,…
UltimaWeapon
  • 2,343
  • 18
  • 19
29
votes
8 answers

"A specified communication resources(port) is already in use" when attaching the debugger

I have just upgrade my windows phone 8 to windows phone 8.1. When I connect my phone to pc and run my project it gives me a specified communication resources(port) is already in use by another application. I restarted my PC and Phone, removed all…
Ajay
  • 6,418
  • 18
  • 79
  • 130
28
votes
1 answer

How to resolve Windows Phone 8.1 Runtime Crash on EM_WATCHDOG_TIMEOUT_DEADA444 SICK_APPLICATION_DEADA444

I write a Windows Phone 8.1 runtime APP. I got some crash report from the APP dashboard, but don't know how to use it or how to debug the app accordingly. On my local machine I can not reproduce the crash. I do not find the dump file. This is an…
Isaac Zhi
  • 289
  • 2
  • 5
28
votes
9 answers

App manifest references the image which does not have a candidate in the main package error in windows phone 8.1

I am just creating app package and got the following error Need help how to resolve this.
Ghazanfar Khan
  • 3,648
  • 8
  • 44
  • 89
28
votes
2 answers

Device Unique id in Windows Phone 8.1

How to get the device unique id in Windows Phone 8.1? The old way of using DeviceExtendedProperties.GetValue("DeviceUniqueId") does not work for Windows Universal app.
MohanRajNK
  • 895
  • 2
  • 13
  • 26
27
votes
3 answers

Fill Ellipse with wave animation

I have created an ellipse in Windows Phone 8.1 Silverlight App and UWP both and I wanted to fill it with animating waves, For this purpose, I am following this solution but it is for WPF so I am unable to use some control like "Visual Brush". I…
Shubham Sahu
  • 1,963
  • 1
  • 17
  • 34
1
2 3
…
99 100