Hi is anybody here have tried to enhance the existing native applications
(like Messaging,Email Client App)of android?Actually i have downloaded
the source code of Android cup cake version,and tried its email application
to build in my eclipse workspace,but i have faced some compilation errors
and the code is not building properly.
First of all is it possible to enhance and add some additional features to
it?If somebody has done that successfully please help me.Its urgent.

Hi for your reference I am posting thi also when i am trying to build the complete source code (with all the applications)of cupcake using linux it is building properly.But when i am trying to build a single application (Email Application)in my eclipse workspace i am facing the following problems of missing packages-


import org.apache.commons.codec.BinaryDecoder;

import org.apache.commons.codec.BinaryEncoder;

import org.apache.commons.codec.DecoderException;

import org.apache.commons.codec.EncoderException;

android.text.format

import android.text.util.Regex

import android.net.http.DomainNameChecker;

import org.apache.commons.logging.LogFactory;

Please help me if anyone has done that successfully..