apktool 小记
1. apktool d xxx.apk xxx
2. apktool b xxx (platform with aapt)
3. keytool -genkey -alias android123.keystore -keyalg RSA -validity 20000 -keystore android123.keystore
4. jarsigner -verbose -keystore android123.keystore -signedjar android123_signed.apk android123.apk android123.keystore
