| <p>This sample demonstrates how to design an application that is compatible across different Android versions. Applications | |
| should degrade gracefully on older platform versions, dropping features or providing | |
| when the platform support needed by features or functionality isn't available.</p> | |
| <p>In this case, the CrossCompatibility application shows how to use APIs that are not available in all Android versions and | |
| still create a single <code>.apk</code> that runs on all Android versions.</p> | |
| <ul> | |
| <li>The main application's <a | |
| href="AndroidManifest.html">AndroidManifest.xml</a> file declares that it is backwards compatible with API level 3 devices with attribute <code>minSdkVersion</code> in the <code>uses-sdk</code> tag. | |
| </li> | |
| <li> | |
| <a | |
| href="src/com/example/android/touchexample/VersionedGestureDetector.html">VersionedGestureDetector.java</a> | |
| is a version independent abstract class which factors out multitouch APIs that differ between platform versions. </li> | |
| </ul> | |
| <p> For more information on how to make your applications cross-compatible, please check out the original | |
| blogpost <a href="http://android-developers.blogspot.com/2010/07/how-to-have-your-cupcake-and-eat-it-too.html">here</a>.</p> |