1. decompile the application file

apktool d -o dianping/ dianping.apk
 

1. modify the resources / smali assembly codes as you wish.

diff -bur 51buy/smali/ 51buy_new/smali/

1. repackage the application

apktool b -o dianping_new.apk dianping/

1. sign the repackaged apk file
1. Generate key store (only once)

keytool -genkey -v -keystore /d/android/keystore-alias android -keyalg RSA -keysize 2048

http://www.sslshopper.com/article-most-common-java-keytool-keystore-commands.html

1. Sign the apk file

jarsigner.exe -verbose -sigalg SHA1withRSA-digestalg SHA1 -keystore /d/android/keystoredianping_new.apk android

1. Install the application and have fun.

repackage android application