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Android 4.3 APIs API Level: 18 Android 4.3 ( JELLY_BEAN_MR2 ) is an update to the Jelly Bean release that offers new features for users and app developers. This document provides an introduction to the most notable new APIs. As an app developer, you should download the Android 4.3 system image and SDK platform from the  SDK Manager  as soon as possible. If you don't have a device running Android 4.3 on which to test your app, use the Android 4.3 system image to test your app on the  Android emulator . Then build your apps against the Android 4.3 platform to begin using the latest APIs. Update your target API level To better optimize your app for devices running Android 4.3, you should set your  targetSdkVersion  to  "18" , install it on an Android 4.3 system image, test it, then publish an update with this change. You can use APIs in Android 4.3 while also supporting older versions by adding conditions to your code that check for the system...

Jelly Bean Welcome to Android 4.3, a sweeter version of  Jelly Bean! Android 4.3 includes performance optimizations and great new features for users and developers. This document provides a glimpse of what's new for developers. See the  Android 4.3 APIs  document for a detailed look at the new developer APIs. Find out more about the new Jelly Bean features for users at  www.android.com . Faster, Smoother, More Responsive Android 4.3 builds on the performance improvements already included in Jelly Bean —  vsync timing ,  triple buffering , reduced touch latency ,  CPU input boost , and  hardware-accelerated 2D rendering  — and adds new optimizations that make Android even faster. For a graphics performance boost, the hardware-accelerated 2D renderer now  optimizes the stream of drawing commands , transforming it into a more efficient GPU format by rearranging and merging draw operations. For multithreaded processing, the ...