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Possible Duplicate:
How to prevent My apk from decompiling

as you probably know - decompiling APK file is too easy: extract the apk as zip - reviles compliltly the manifest and all resources.
using simple decompiling software - reviles all the source code (only with not the original variables names..)

I would like to know if there is a way to secure somehow APK file from been decompile.

I assume that reason I need this is obvious to all of you - I don't want people to read the source code or any part of it, from security reasons...

thanks in advance

Community
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Tal Kanel
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  • Google "reverse engineering" and check out [Proguard](http://developer.android.com/guide/developing/tools/proguard.html) – keyser May 19 '12 at 12:18

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Use proguard. It shrinks, optimizes, and obfuscates your code by removing unused code and renaming classes, fields, and methods with semantically obscure names. The result is a smaller sized .apk file that is more difficult to reverse engineer.

Ron
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  • thanks, 'll check it up letter. seems like it would be good enough. still don't understand why by default android don't provide better solution to secure apk's – Tal Kanel May 19 '12 at 14:38
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As far as I know, you can't. If you root your phone you will always be able to extract the apk and it's contents.

Sebastian Breit
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  • If you add any video or important matter in assets or raw folder, it will still there when decompiling. – Shadow Jan 10 '13 at 12:23
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You can use proguard and while done with your coding , you can export the apk file with eclipse with a keystore. This make your application more secure. Link to creating keystore.

flameaddict
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