and how do you sign an apk yourself? is there a simple tool to do this or you have to type line commands ?
Get the android sdk and java sdk..
The command lines are:
keytool -genkey -v -keystore C:\YOURPATH\YOURAPP_DEBUG.keystore -alias YOURUSER -keyalg RSA -keysize 2048 -validity 10000
keytool -genkey -v -keystore C:\YOURPATH\YOURAPP_PRODUCTION.keystore -alias YOURUSER -keyalg RSA -keysize 2048 -validity 10000
jarsigner -verbose -keystore C:\YOURPATH\YOURAPP_PRODUCTION.keystore -storepass YOURPASSW -keypass YOURPASSW C:\YOURPATH\YOURAPP.apk YOURUSER
zipalign -v 4 C:\YOURPATH\YOURAPP.apk C:\YOURPATH\YOURAPP_RELEASE.apk
Once you have a key you just need to sign and zipalign....