Delay's Blog is the blog of David Anson, a Microsoft developer who works with C#, XAML, HTML, and Azure.
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A few weeks after the initial release of the Windows Phone Developer Tools in April, I blogged a sample showing how to easily animate device orientation changes for Windows Phone 7 applications. I noted at the time that the default behavior for application projects is no animation - the app immediately switches to the new orientation when the device is rotated (click here for a brief video of the default behavior). While this is clearly the simplest approach, I wanted to enable something a little fancier by smoothly animating the application's rotation from one orientation to another - just like the built-in applications do.
To show what I'm talking about, here's a video of my implementation running on the emulator:
FYI: The buttons in the video rotate the device one quarter turn clockwise or counter-clockwise. I begin by rotating counter-clockwise once, then clockwise once back to the starting orientation, then clockwise three more times to loop all the way around. And then show off just a bit. :)
Note: I made that video back in April; the emulator looks a little different now, but the animation works just the same.
As of yesterday's release of the Windows Phone Developer Tools Beta, some of the platform changes have invalidated my original implementation. But that's okay, because I've updated the code to work with the latest release - and made a few improvements along the way! :)
[Click here to download the AnimateOrientationChanges sample for Windows Phone 7.]
Phone application initialization
RootFrame = new PhoneApplicationFrame();
RootFrame = new Delay.AnimateOrientationChangesFrame();
On the one hand, animating orientation changes is kind of a whimsical behavior to add to an application - but on the other hand, it helps to create the kind of pleasing, platform-consistent experience that users appreciate and enjoy. AnimateOrientationChangesFrame isn't going to turn a crummy application into a good one - but it just might add some polish to help turn a good application into a great one.
I've had fun creating this sample - I hope you enjoy using it!