title: Bluetooth Low Energy Android exsample doesn't work
body: <p>I just tried installing BluetoothLeGatt sample from (<a href="http://developer.android.com/samples/BluetoothLeGatt/project.html" rel="nofollow">http://developer.android.com/samples/BluetoothLeGatt/project.html</a>) on my Nexus 7 2013 with Android 4.4.2 and it always fails to start saying "Unfortunately, BluetoothLeGatt has stopped"</p>
  
  <p>Following is error logs:</p>
  
  <pre><code>02-20 17:13:09.728: D/dalvikvm(30728): Late-enabling CheckJNI
  02-20 17:13:09.738: D/dalvikvm(30728): Debugger has detached; object registry had 1 entries
  02-20 17:13:09.768: D/AndroidRuntime(30728): Shutting down VM
  02-20 17:13:09.768: W/dalvikvm(30728): threadid=1: thread exiting with uncaught exception (group=0x41559ba8)
  02-20 17:13:09.768: W/ActivityThread(30728): Application com.example.android.bluetoothlegatt can be debugged on port 8100...
  02-20 17:13:09.768: E/AndroidRuntime(30728): FATAL EXCEPTION: main
  02-20 17:13:09.768: E/AndroidRuntime(30728): Process: com.example.android.bluetoothlegatt, PID: 30728
  02-20 17:13:09.768: E/AndroidRuntime(30728): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.android.bluetoothlegatt/com.example.android.bluetoothlegatt.DeviceScanActivity}: java.lang.ClassNotFoundException: Didn't find class "com.example.android.bluetoothlegatt.DeviceScanActivity" on path: DexPathList[[zip file "/data/app/com.example.android.bluetoothlegatt-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.android.bluetoothlegatt-2, /vendor/lib, /system/lib]]
  02-20 17:13:09.768: E/AndroidRuntime(30728):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2121)
  02-20 17:13:09.768: E/AndroidRuntime(30728):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
  02-20 17:13:09.768: E/AndroidRuntime(30728):    at android.app.ActivityThread.access$800(ActivityThread.java:135)
  02-20 17:13:09.768: E/AndroidRuntime(30728):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
  02-20 17:13:09.768: E/AndroidRuntime(30728):    at android.os.Handler.dispatchMessage(Handler.java:102)
  02-20 17:13:09.768: E/AndroidRuntime(30728):    at android.os.Looper.loop(Looper.java:136)
  02-20 17:13:09.768: E/AndroidRuntime(30728):    at android.app.ActivityThread.main(ActivityThread.java:5017)
  02-20 17:13:09.768: E/AndroidRuntime(30728):    at java.lang.reflect.Method.invokeNative(Native Method)
  </code></pre>