1 <p>This sample demonstrates how to design an application that is compatible across different Android versions. Applications 2 should degrade gracefully on older platform versions, dropping features or providing 3 when the platform support needed by features or functionality isn't available.</p> 4 5 <p>In this case, the CrossCompatibility application shows how to use APIs that are not available in all Android versions and 6 still create a single <code>.apk</code> that runs on all Android versions.</p> 7 8 <ul> 9 <li>The main application's <a 10 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. 11 </li> 12 <li> 13 <a 14 href="src/com/example/android/touchexample/VersionedGestureDetector.html">VersionedGestureDetector.java</a> 15 is a version independent abstract class which factors out multitouch APIs that differ between platform versions. </li> 16 17 </ul> 18 19 <p> For more information on how to make your applications cross-compatible, please check out the original 20 blogpost <a href="http://android-developers.blogspot.com/2010/07/how-to-have-your-cupcake-and-eat-it-too.html">here</a>.</p> 21
