Based on Android, Bluetooth connection scan source code, eclipse environment.

Bluetooth4_3
............\Bluetooth4_3
............\............\.classpath
............\............\.project
............\............\.settings
............\............\.........\org.eclipse.core.resources.prefs
............\............\.........\org.eclipse.jdt.core.prefs
............\............\AndroidManifest.xml
............\............\assets
............\............\bin
............\............\...\AndroidManifest.xml
............\............\...\classes
............\............\...\.......\com
............\............\...\.......\...\example
............\............\...\.......\...\.......\bluetooth
............\............\...\.......\...\.......\.........\le
............\............\...\.......\...\.......\.........\..\BluetoothLeService$1.class
............\............\...\.......\...\.......\.........\..\BluetoothLeService$LocalBinder.class
............\............\...\.......\...\.......\.........\..\BluetoothLeService.class
............\............\...\.......\...\.......\.........\..\BuildConfig.class
............\............\...\.......\...\.......\.........\..\DeviceControlActivity$1.class
............\............\...\.......\...\.......\.........\..\DeviceControlActivity$2.class
............\............\...\.......\...\.......\.........\..\DeviceControlActivity$3.class
............\............\...\.......\...\.......\.........\..\DeviceControlActivity$4.class
............\............\...\.......\...\.......\.........\..\DeviceControlActivity.class
............\............\...\.......\...\.......\.........\..\DeviceScanActivity$1$1.class
............\............\...\.......\...\.......\.........\..\DeviceScanActivity$1.class
............\............\...\.......\...\.......\.........\..\DeviceScanActivity$2.class
............\............\...\.......\...\.......\.........\..\DeviceScanActivity$LeDeviceListAdapter.class
............\............\...\.......\...\.......\.........\..\DeviceScanActivity$ViewHolder.class
............\............\...\.......\...\.......\.........\..\DeviceScanActivity.class
............\............\...\.......\...\.......\.........\..\MainActivity.class
............\............\...\.......\...\.......\.........\..\R$attr.class
............\............\...\.......\...\.......\.........\..\R$dimen.class
............\............\...\.......\...\.......\.........\..\R$drawable.class
............\............\...\.......\...\.......\.........\..\R$id.class
............\............\...\.......\...\.......\.........\..\R$layout.class
............\............\...\.......\...\.......\.........\..\R$menu.class
............\............\...\.......\...\.......\.........\..\R$string.class
............\............\...\.......\...\.......\.........\..\R$style.class
............\............\...\.......\...\.......\.........\..\R.class
............\............\...\.......\...\.......\.........\..\SampleGattAttributes.class
............\............\...\jarlist.cache
............\............\...\res
............\............\gen
............\............\...\com
............\............\...\...\example
............\............\...\...\.......\bluetooth
............\............\...\...\.......\.........\le
............\............\...\...\.......\.........\..\BuildConfig.java
............\............\...\...\.......\.........\..\R.java
............\............\ic_launcher-web.png
............\............\libs
............\............\....\android-support-v4.jar
............\............\proguard-project.txt
............\............\project.properties
............\............\res
............\............\...\drawable-hdpi
............\............\...\.............\ic_launcher.png
............\............\...\drawable-ldpi
............\............\...\drawable-mdpi
............\............\...\.............\ic_launcher.png
............\............\...\drawable-xhdpi
............\............\...\..............\ic_launcher.png
............\............\...\drawable-xxhdpi
............\............\...\...............\ic_launcher.png
.........

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