Android - Error signing my apk wit jarsigner

Question

I made a key file like this:

C:\Users\Alex>keytool -genkey -v -keystore alexkey.keystore -alias alexkey -keyalg RSA -keysize 2048 -validity 10000

and then I tried to sign my .apk file with it like this:

C:\>jarsigner -verbose -keystore alexkey.keystore problemio.apk alexkey

and I saved the .apk file by right-clicking the project name in Eclipse --> Android tools --> Export unsigned application package.

and then I put the .apk file in the same dir as the key, and ran the jarsigner command from that same dir.

Any idea why I got this error:

jarsigner: unable to create: problemio.apk.sig

Thanks!

Answer 1

Credit to @yorkw for the answer, the real solution to this problem is a folder permissions issue. Make sure you are operating in a folder that you can modify. I just fixed that same problem for my self by making sure I was in a folder with the right permissions.

Answer 2

This error is related to permission issues.

1. Check the folder(Full permission is there or not)
2. Run as administrator for command prompt