I have signed and packaged the Xamarin application
and so have created the apk file using Visual Studio.
How can I zipalign this file in Windows?
Make sure you have the Android SDK build-Tools installed then check where your SDK is installed mine was at
C:\Program Files(x86)\Android\android-sdk\build-tools\23.0.1\zipalign You will find zipAlign in the android build tools then use it like so:
C:\Program Files(x86)\Android\android-sdk\build-tools\23.0.1\zipalign -v 4 infile.apk outfile.apk
To align infile.apk and save it as outfile.apk:
zipalign [-f] [-v] <alignment> infile.apk outfile.apk
To confirm the alignment of existing.apk:
zipalign -c -v <alignment> existing.apk
The alignment is an integer that defines the byte-alignment boundaries. This must always be 4 (which provides 32-bit alignment) or else it effectively does nothing.
-f : overwrite existing outfile.zip
-v : verbose output
-c : confirm the alignment of the given file
output from windows (extra parameters not in the Docs :O) :
Zip alignment utility Copyright (C) 2009 The Android Open Source Project Usage: zipalign [-f] [-p] [-v] [-z] <align> infile.zip outfile.zip zipalign -c [-v] <align> infile.zip <align>: alignment in bytes, e.g. '4' provides 32-bit alignment -c: check alignment only (does not modify file) -f: overwrite existing outfile.zip -p: page align stored shared object files -v: verbose output -z: recompress using Zopfli
I spent a good few minutes searching for the Android command line build tools. They were nowhere to be found inside either of the
Program Files directories. Apparently, on my system the tools were in the following location:
I found the location inside Android Studio by going to File > Project Structure > SDK Location.
Edit: Obviously, “my system” is Windows – specifically Windows 10.
For windows 10 set PATH variable to
And then run the command from the location where application is present
zipalign -v 4 <YOUR_APP_NAME> app-release-final.apk
for win10 its in c:\Users, such as: C:\Users\\Android\sdk\build-tools\
On my end, the path it’s quite different, i installed android studio, which created the following path:
Just direct to that path and run the command, make sure to use full path of where your file is located…
Hope that helps.