Windows Phone development and learning-rotation animation during loading

During Windows Phone development, sometimes we use progressbar to indicateProgramLoading is in progress, but you can also design a rotating image (similar to the 360 anti-virus software) to indicate loading is in progress. As shown below:

The following describes the implementation process:

Step 1: Add a rotating PNG image to the Project

Step 2: Add the following animation effects to mainpage and XAML.

 
<Phone: phoneapplicationpage. resources> <storyboard X: Name = "spinninganimation"> <doubleanimation autoreverse = "false" Duration = "0: 0" from = "0" repeatbehavior = "forever" storyboard. targetname = "spinningrotatetransform" storyboard. targetproperty = "angle" to = "360"/> </storyboard> </Phone: phoneapplicationpage. resources>
 

Step 3:CodeAdd to mainpage. XAML:

<Stackpanel X: Name = "contentpanel" grid. row = "1" margin = "12, 0, 12, 0 "background =" red "> <image margin =" 10, 10 "Height =" 50 "width =" 50 "Source ="/spinner.png "stretch =" Uniform "> <image. rendertransform> <rotatetransform X: Name = "spinningrotatetransform" centerx = "25" centery = "25"/> </image. rendertransform> </image> </stackpanel>
 

Step 4: Add two buttons to start and end the animation.

 
<Button content = "Start Animation" Click = "btnstart_click"/> <button content = "Stop Animation" Click = "btnstop_click"/>
 

 
Private void btnstart_click (Object sender, routedeventargs e) {This. spinninganimation. Begin ();} private void btnstop_click (Object sender, inclue) {This. spinninganimation. Stop ();}
 

Step 5: if you do not see the effect after running, the color of the rotated image is usually the same as the background color of the page. After changing the color, you can see it. Here you can use an opaque mask, add the following code:

 
<Ellipse fill = "{staticresource phoneforegroundbrush}" Height = "50" width = "50" margin = "10, 10"> <ellipse. opacitymask> <imagebrush imagesource = "/spinner.png" stretch = "Uniform"/> </ellipse. opacitymask> <ellipse. rendertransform> <rotatetransform X: Name = "spinningrotatetransform" centerx = "25" centery = "25"/> </ellipse. rendertransform> </ellipse>
 

The final code is as follows:

Mainpage. XAML:

<Phone: phoneapplicationpage X: class = "spinningprogressbar. mainpage "xmlns =" http://schemas.microsoft.com/winfx/2006/xaml/presentation "xmlns: x =" http://schemas.microsoft.com/winfx/2006/xaml "xmlns: Phone =" CLR-namespace: Microsoft. phone. controls; Assembly = Microsoft. phone "xmlns: shell =" CLR-namespace: Microsoft. phone. shell; Assembly = Microsoft. phone "xmlns: D =" http://schemas.microsoft.com/expression/blend/2008" Xmlns: MC = "http://schemas.openxmlformats.org/markup-compatibility/2006" MC: ignorable = "D" fontfamily = "{staticresource quota}" fontsize = "{staticresource quota}" foreground = "{staticresource quota}" supportedorientations = "portrait" orientation = "portrait" Shell: systemtray. isvisible = "true"> <Phone: phoneapplicationpage. resources> <storyboard X: Name = "spinningan Imation "> <doubleanimation autoreverse =" false "Duration =" 0: 0 "from =" 0 "repeatbehavior =" forever "storyboard. targetname = "spinningrotatetransform" storyboard. targetproperty = "angle" to = "360"/> </storyboard> </Phone: phoneapplicationpage. resources> <! -- Layoutroot is the root grid where all page content is placed --> <grid X: Name = "layoutroot" background = "Transparent"> <grid. rowdefinitions> <rowdefinition Height = "Auto"/> <rowdefinition Height = "*"/> </grid. rowdefinitions> <! -- Titlepanel contains the name of the application and page title --> <stackpanel X: Name = "titlepanel" grid. row = "0" margin = "12, 17, "> <textblock text =" my application "style =" {staticresource phonetextnormalstyle} "margin =" "/> <textblock text =" Page name "margin =" 9, -7,0, 0 "style =" {staticresource phonetexttitle1style} "/> </stackpanel> <! -- Contentpanel-place additional content here --> <stackpanel X: Name = "contentpanel" grid. row = "1" margin = "12, 0, "> <ellipse fill =" {staticresource phoneforegroundbrush} "Height =" 50 "width =" 50 "margin =" "> <ellipse. opacitymask> <imagebrush imagesource = "/spinner.png" stretch = "Uniform"/> </ellipse. opacitymask> <ellipse. rendertransform> <rotatetransform X: Name = "spinningrotatetransform" centerx = "25" centery = "25"/> </ellipse. rendertransform> </ellipse> <button content = "Start Animation" Click = "btnstart_click"/> <button content = "Stop Animation" Click = "btnstop_click"/> </stackpanel> </GRID> </phone: phoneapplicationpage>

Mainpage. XAML. CS

 
Using system; using system. collections. generic; using system. LINQ; using system. net; using system. windows; using system. windows. controls; using system. windows. navigation; using Microsoft. phone. controls; using Microsoft. phone. shell; using spinningprogressbar. resources; namespace spinningprogressbar {public partial class mainpage: phoneapplicationpage {// constructor public mainpage () {initializecomponent ();} private void btnstart_click (Object sender, routedeventargs e) {This. spinninganimation. begin ();} private void btnstop_click (Object sender, routedeventargs e) {This. spinninganimation. stop ();}}}
 

Source codeDownload here: http://www.windowsphonegeek.com/upload/articles/SpinningAnimation.zip