The Android SDK manager will allow you to install different versions of the Android API. An Android API allows the programmer to communicate with a set of built in functions for a specific device. For example an Android phone might use Android 3.0 which is an API level of 11. In this case you will need to use an API of level 11. A tablet might use Android 4 which is API level 14 so you could target just API level 14 but the changes are you want to target a range so your software will work on older Android devices.
1. Open Eclipse.
2. Select Window->Android SDK Manager from the Eclipse Menu.
3. Select the API version 4.3 if it isn’t already selected.
4. Select Install packages.
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