Thanks Yaron, but my requirement is parsing and modifying arsc file at runtime on the device.
So my next question is can apktool be ported on device. What I mean is since the source code is available are there any lib/frameworks (that apktool) which are only available for desktop and not for android. On Thu, Jul 11, 2013 at 8:13 AM, Yaron Reinharts <[email protected]>wrote: > No need to reinvent the wheel: > https://code.google.com/p/android-apktool/ > > Hope this helps > Yaron > > On 07/11/2013 02:13 AM, giles ian wrote: > > Hi Illyoung Choi, > * > * > *Is it possible for you to share the code for the entire thing. i.e. * > * > * > *1.Parsing* > *2. Modifying > * > On Tuesday, June 21, 2011 8:09:12 PM UTC-7, Illyoung Choi wrote: >> >> Hi All. >> >> Last day, I made a simple application for parsing an Android Resource >> File (*.arsc) and modifying resource strings. >> >> I think this thing might be a help for someone, so I'll share the >> structure of *.arsc that I understood. >> >> Since I could not spend many hours for this, my understanding is not >> perfect and might be slightly wrong. >> >> >> I patched string resource from *.apk. >> Simply extracted *.apk with 7zip and got the resources.arsc file. >> >> Below are the structure of *.arsc >> >> struct ANDROID_RESOURCE_HEADER >> { >> int signature; // 0x000c0002, I assume this is a signature >> int nImageLength; // total ARSC file size (bytes) >> int nUnknown1[2]; // still unknown (not important for modifying >> strings) >> int nStringBlockLength; // total StringBlock(see below) size >> int nStringCount; // total number of String Resources >> int nUnknown2[4]; // still unknown (not important for modifying >> strings) >> } >> >> "struct ANDROID_RESOURCE_HEADER" is a header of ARSC file image. >> So simply you can read this header information from file. >> >> After this header, you will meet the StringBlock >> >> StringBlock has 2Sections >> { >> [String Offset] >> [String Data] >> } >> >> String Offset Section has Offset Values of Specific Strings from >> StringBlock Start Address. >> >> String Data Section has 2 Part >> >> String Data >> { >> [Length] >> [String] >> } >> >> Length part is 2byte. but, in AscII Mode, uses only 1byte. >> Before reading String, you must check whether it is "Unicode" or >> "AscII" format. >> >> in Unicode format, Length part will be used with 2bytes. >> normally it is "0x??, 0x00" (only if it is not longer than 256 bytes) >> >> in AscII format, Length part will be used with 1bytes. but, they also >> used second byte for mirroring. >> if string length has a value 7, you will meet "0x07, 0x07" >> >> So, I checked whether both bytes have same value to check string >> format. >> >> >> Lastly, actual string data will be after this length part with "Zero >> Terminal" >> in Unicode format, surely, Zero Terminal will be 2 byte of zero. >> >> >> >> Whenever you change the string of this ARSC file, you should >> recalculate these. >> Length Part of String Data >> String Offset of StringBlock >> nImageLength of Header >> nStringBlockLength of Header >> >> >> After doing these all. >> Simply, remove all JAR Signature (META-INF folder) from package. >> Re-Archive with Zip and rename with *.apk. >> Resign with your certificate by using "jarsigner" of JDK >> >> >> >> Thanks. > > -- > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Android Developers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > > > > > > -- > Yaron Reinharts > Smart Drive > Applicationshttp://www.poncho.co.il/gateaway.phphttps://market.android.com/details?id=com.poncho.gsm.gate.activities > > -- > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Android Developers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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