MyApk will extract apk (including system apk) and save file for backup to SD card (microSD card or secondary SD card, external storage, etc). This useful APK tool helps you easily share apk to your friends via Bluetooth, email or social network apps.
https://play.google.com/store/apps/details?id=com.andatsoft.myapk.fwa&hl=en
It can be used to view the name and no. of source java files in the app…
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