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I did as below :

  • Back up App , download from Play Store and back up it by Astro file manager: enter image description here

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Finally, I can easily get .apk file enter image description here

I think this is serious security problem, User can download paid app and share with other,

Thank for your reading...

Tai Tran
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  • If you're worried, you should use [Google Play Licensing](http://developer.android.com/google/play/licensing/overview.html) in your app. I'm not sure this is really a programming question, per se... – Matt Gibson Jun 27 '14 at 09:18
  • This question appears to be off-topic because it seems to be a comment on default copy-protection scheme of apps in an app store, rather than a question about programming. – Matt Gibson Jun 27 '14 at 09:19
  • I think I can config in Manifest.xml may be . It's programming question – Tai Tran Jun 27 '14 at 09:21
  • I think the question of how to programatically prevent this is on topic. Maybe the answer is to use Google Play Licensing as you suggest or to write their own license server, but its a valid question. – Gabe Sechan Jun 27 '14 at 09:22
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    Fair enough. In that case, it's a duplicate of [this question](http://stackoverflow.com/questions/2718489/how-to-prevent-application-thievery-specific-to-android-applications). – Matt Gibson Jun 27 '14 at 09:22
  • @MattGibson: thank you, that's what I want – Tai Tran Jun 27 '14 at 09:34

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