modification to android source code, for security, stability and more features

Avg Bid (USD)
Project Budget (USD)
$250 - $750

Project Description:
Project Description:
I designed my app in one of the cloud based tool. Now the code is ready.
I want more coding or modification of code to meet following requirements Of course the freelancer who is awarded the project can start from scratch if he feel comfortable:

1- Make the app to require activation code after trail period.The could to be authenticate with my server (API to be written by developer). Code to be put on server.
2- Encryption of contents of /assets/Docs folder (Cryptography), so that if someone get hand on my app and extract it, he/she should not be able to use my files for building his own. The format of the contents are HTML,
3- Add Search Function. When Menu Button (of the device) is tapped, a button to appear among other buttons and its functionality to open a page with search box. User type a word or short phrase to look up it through the contents of the app. Found word/s to be listed below search box. User tab one of them then he/she is taken to respective page. Of course, along with the found word, one line of the respective sentence to be displayed below the search box. (for further explanation, I am read to accommodate your skype address).
4- Fixing the problem of some errors

To be noted, no milestones will be released until delivery of work, milestone will be accepted.

Skills required:
Android, Java, MySQL, PHP, XML
Hire sirath
Project posted by:
sirath Afghanistan
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