First of all thank you for your kind words about Icenium. I'm sending you greetings on behalf of my colleagues as well as wish you many more apps developed with Icenium. Now onto your question.
In order to sign the apk file with the certificate used in Icenium you should first export the certificate from Icenium Graphite. Go to Options -> General -> Certificate Management
. Select the certificate you want to use and click Export. The system will ask you for a password so you should enter one. Having entered you will be given option to save the certificate as p12 on your local drive.
Next you need to run the jarsigner tool against your apk file using the exported certificate. Usually the jarsigner.exe can be found in the folder of your local JDK installation (if you don't have the JDK installed you should do so). Here is the command line you have to execute to sign the apk:
jarsigner -storetype pkcs12 -keystore path_to_exported_cert\MyCert.p12 path_to_exported_cert\app.apk MyCertAllias
The jarsigner tool will ask you for a password and you should provide the one entered while exporting the certificate store. Please pay attention to the last passed argument - it should be the alias for your certificate in the p12 file.
If you happen to lose the p12 file or forgot the password you can always export it from Icenium Graphite.
Hope this helps,
the Telerik team
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