I finally managed to obfuscate my Android application, now I want to test it by installing the APK file and running it on the emulator.
Copy .apk file in your SDK's platform-tools/ directory,then install the .apk on the emulator by using cmd(on windows):
adb install .apk
or
./adb install .apk
If there is more than one emulator running, you can find all running emulators by this command:
adb devices
or
./adb devices
then you must specify the emulator upon which to install the application, by its serial number, with the -s option. For example:
adb -s emulator-5554 install path/to/your/app.apk
or
./adb -s emulator-5554 install path/to/your/app.apk