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.
1) paste the myapp.apk in platform-tools folder , in my case C:\Users\mazbizxam\AppData\Local\Android\android-sdk\platform-tools, this is the link in my case it may change to you people
2)open the directory in CMD CD C:\Users\mazbizxam\AppData\Local\Android\android-sdk\platform-tools
3)Now you are in platform-tools folder , just type adb install myapp.apk
please ensure that your emulator is turn on , if every thing is ok apk will install