Why does the md5sum value of an apk change after every build?
Every time i build my Android application in the Eclipse IDE using the Android Tools -> Export Signed Application package, i get an apk file that gives a different md5sum value. If i have not changed any of the source code, shouldn't the apk files give the exact same md5sum? This happens even if i build it just seconds apart. What is going on?
The individual files should compile with the same CRC. An APK however is like a zip file containing all your files and those files are stored with a timestamp. The timestamp will be different for each compile and this is what changes your md5sum.