×
Namespaces

Variants
Actions
(Difference between revisions)

How to detect the screen resolution on Windows Phone

From Nokia Developer Wiki
Jump to: navigation, search
hamishwillee (Talk | contribs)
m (Hamishwillee - Fix typo)
influencer (Talk | contribs)
(Influencer -)
(7 intermediate revisions by 4 users not shown)
Line 1: Line 1:
[[Category:Windows Phone]][[Category:UI]][[Category:How To]][[Category:Windows Phone 8]][[Category:Windows Phone 7.5]][[Category:XAML]][[Category:Base/System]][[Category:Code Examples]]
+
[[Category:Windows Phone]][[Category:UI]][[Category:How To]][[Category:Windows Phone 8]][[Category:Windows Phone 7.5]][[Category:XAML]][[Category:Code Examples]][[Category:System Information]]
 
{{Abstract|This article explains how to detect the display resolution using reflection. The code can be used in Windows Phone 7 and later.}}
 
{{Abstract|This article explains how to detect the display resolution using reflection. The code can be used in Windows Phone 7 and later.}}
 
{{SeeAlso|[[Fullscreen XNA games on Windows Phone 8 devices]]}}
 
{{SeeAlso|[[Fullscreen XNA games on Windows Phone 8 devices]]}}
{{ArticleMetaData <!-- v1.2 -->
+
{{ArticleMetaData <!-- v1.3 -->
|sourcecode= [[Media:DisplayResolution.zip]]  
+
|sourcecode= [[Media:DisplayResolution.zip]]
 
|installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) -->
 
|installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) -->
|devices= <!-- Devices tested against - e.g. ''devices=Nokia 6131 NFC, Nokia C7-00'') -->
+
|devices= Lumia 920, Lumia 800
 
|sdk= Windows Phone SDK 8.0
 
|sdk= Windows Phone SDK 8.0
 
|platform= Windows Phone 7 and later
 
|platform= Windows Phone 7 and later
|devicecompatability= <!-- Compatible devices e.g.: All* (must have internal GPS) -->
 
 
|dependencies= <!-- Any other/external dependencies e.g.: Google Maps Api v1.0 -->
 
|dependencies= <!-- Any other/external dependencies e.g.: Google Maps Api v1.0 -->
 
|signing= <!-- Signing requirements - empty or one of: Self-Signed, DevCert, Manufacturer -->
 
|signing= <!-- Signing requirements - empty or one of: Self-Signed, DevCert, Manufacturer -->
|capabilities= <!-- Capabilities required by the article/code example (e.g. Location, NetworkServices. -->
+
|capabilities= <!-- Required capabilities for code (e.g. ID_CAP_LOCATION, ID_CAP_NETWORKING) -->
 
|keywords= <!-- APIs, classes and methods (e.g. QSystemScreenSaver, QList, CBase -->
 
|keywords= <!-- APIs, classes and methods (e.g. QSystemScreenSaver, QList, CBase -->
 
|language= <!-- Language category code for non-English topics - e.g. Lang-Chinese -->
 
|language= <!-- Language category code for non-English topics - e.g. Lang-Chinese -->
Line 23: Line 22:
 
|creationdate= 20130430
 
|creationdate= 20130430
 
|author= [[User:dan.ardelean]]
 
|author= [[User:dan.ardelean]]
 +
<!-- The following are not in current metadata -->
 +
|devicecompatability= <!-- Compatible devices e.g.: All* (must have internal GPS) -->
 
}}
 
}}
  
Line 40: Line 41:
 
         if (Environment.OSVersion.Version.Major<8)   
 
         if (Environment.OSVersion.Version.Major<8)   
 
           return new Size(480,800);   
 
           return new Size(480,800);   
         int scaleFactor=(int) GetProperty(Application.Current.Host.Content, "ScaleFactor");   
+
         int scaleFactor=(int) GetProperty(System.Windows.Application.Current.Host.Content, "ScaleFactor");   
 
         switch (scaleFactor)   
 
         switch (scaleFactor)   
 
         {   
 
         {   
Line 70: Line 71:
 
== References ==
 
== References ==
  
 +
* [http://www.developer.nokia.com/Resources/Library/Lumia/#!how-to-adapt-to-lumia-phone-hardware-features/how-to-check-characteristics-of-hardware-features.html How to check characteristics of hardware features] (Lumia Developer's Library)
 
* [http://msdn.microsoft.com/en-us/library/windowsphone/develop/jj206974(v=vs.105).aspx Multi-resolution apps for Windows Phone 8] (Dev Center)
 
* [http://msdn.microsoft.com/en-us/library/windowsphone/develop/jj206974(v=vs.105).aspx Multi-resolution apps for Windows Phone 8] (Dev Center)
 
* [http://sviluppomobile.blogspot.com.au/2013/04/detect-screen-resolution-for-windows.html Detect the screen resolution for Windows Phone OS 7.1 applications] (Original blog)
 
* [http://sviluppomobile.blogspot.com.au/2013/04/detect-screen-resolution-for-windows.html Detect the screen resolution for Windows Phone OS 7.1 applications] (Original blog)
 +
 +
[[ar:كيفية تحديد دقه الشاشة في الويندوز فون]]

Revision as of 23:57, 16 June 2013

This article explains how to detect the display resolution using reflection. The code can be used in Windows Phone 7 and later.

WP Metro Icon UI.png
SignpostIcon XAML 40.png
WP Metro Icon WP8.png
SignpostIcon WP7 70px.png
Article Metadata
Code ExampleTested with
SDK: Windows Phone SDK 8.0
Devices(s): Lumia 920, Lumia 800
Compatibility
Platform(s): Windows Phone 7 and later
Windows Phone 8
Windows Phone 7.5
Article
Created: dan.ardelean (30 Apr 2013)
Last edited: influencer (16 Jun 2013)

Contents

Overview

Windows Phone 7 apps can be run on Windows Phone 8 devices, and will usually display "acceptably" on the new display resolutions supported by Windows Phone 8. However if you want to take advantage of the new screen display resolutions, for example using higher quality images for higher resolution devices, you will need to know the ScaleFactor of the device.

The property is only available in the Windows Phone 8.0 SDK, but if you need to access it on a Windows Phone 7 app you can do so using reflection.

Solution

Retrieve the Get() method of the ScaleFactor property using reflection and invoke it only if the application is running on a Windows Phone 8 device.

public static Size DisplayResolution  
{
get
{
if (Environment.OSVersion.Version.Major<8)
return new Size(480,800);
int scaleFactor=(int) GetProperty(System.Windows.Application.Current.Host.Content, "ScaleFactor");
switch (scaleFactor)
{
case 100:
return new Size(480, 800);
case 150:
return new Size(720, 1280);
case 160:
return new Size(768, 1280);
}
return new Size(480, 800);
}
}
private static object GetProperty(object instance, string name)
{
var getMethod= instance.GetType().GetProperty(name).GetGetMethod();
return getMethod.Invoke(instance, null);
}

Test Code

The test code can be downloaded from here: File:DisplayResolution.zip

The Emulator output of the test code is shown below.

Emulator

References

229 page views in the last 30 days.
×