So far I have learnt to use APKtool. But when I try to decompile systemui.apk with framework-res.apk, I get the following error :
"Can't find framework resource for package of id: 2. You must install proper framework files, see project website for more info."
These are the commands I used:
apktool if framework-res.apk
apktool d systemui.apk
I also tried Autoapktool with same result.