It depends on what you are modifying.  If you are just changing a bitmap,
you can just modify that file.  However, whatever change you make, you will
always need to re-sign the .apk (with jarsigner) with your own cert.  You
probably will need to strip out the jar manifest files before doing so, so
that the existing signing is not bad (mismatching the contents).

On Mon, Jun 7, 2010 at 10:03 AM, AndyP <[email protected]> wrote:

> Hi All,
>
> I was wondering how to break apart .apk files in Windows to see all of
> it's components, edit some of the components, and put the file back
> together.
>
> I have been able to open up the file to see the components using
> WinZip but I am unsure of how to re-"make" the .apk file again using
> WinZip. Is there a special option within winzip or can you just change
> the extension from .zip to .apk? Not sure if this matters, but
> the .apk files are being used within Eclipse in an emulator as of now.
>
> Thank you!
>
> Andy
>
> P.s. First time poster here so please go easy on me
>
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-- 
Dianne Hackborn
Android framework engineer
[email protected]

Note: please don't send private questions to me, as I don't have time to
provide private support, and so won't reply to such e-mails.  All such
questions should be posted on public forums, where I and others can see and
answer them.

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