Android 5.0 Behavior Changes
Android 5.0 Behavior Changes API Level: 21 Along with new features and capabilities, Android 5.0 includes a variety of system changes and API behavior changes. This document highlights some of the key changes that you should be understand and account for in your apps. If you have previously published an app for Android, be aware that your app might be affected by these changes in Android 5.0. For a high-level look at the new platform features, instead see the Android Lollipop highlights . Android Runtime (ART) In Android 5.0 the ART runtime replaces Dalvik as the platform default. The ART runtime was introduced in Android 4.4 on an experimental basis. For an overview of ART's new features, see Introducing ART . Some of the major new features are: Ahead-of-time (AOT) compilation Improved garbage collection (GC) Improved debugging support Most Android apps should just work without any changes under ART. However, some techniques that work on Dalvik do...