Package xx.xx has no signatures

[handsometong]

用android studio 签名的系统jks一直报Package xx.xx has no signatures that match those in shared user android.uid.system; ignoring!。但是用java -jar signapk.jar platform.x509.pem platform.pk8 old.apk new.apk签名的系统apk可以正常运行。platform.x509.pem 和platform.pk8都是同一个，有谁碰到？