add activation requirement to already designed android project - repost

I have designed my app. It is now ready to get exported as apk. But due to lack of experience, I could not do it as I wanted. Now I need an expert developer to: 1- Make it require activation code upon first run after installation. The activation code should be tied to the device's ID so one code should not work in more than one device (Licencing). It should be noted that my app is not uploaded on play store. So the licensing should work out of google store. The activation code should be authenticated and validated with my server, the higher level of security the better. 2- Encryption of the content of Doc folder inside Assets folder. The format of the content is HTML. the content should be encrypted in a way so that it should not useable if somebody get hand on it (like extracting the content of the app). 3- Changing the alignment of title bar from left to right 4- Changing the menu from single line to multi lines so that if the title in the menu is long, it should not be continued with dots at the end, rather next line should be started. 5- buttons on tab bar were supposed to be filled with icons, but now I have decided that it should be filled with text of the title. (for example I write:" buttons buttons, buttons" this is a long title for buttons on tab bar and will go out of margin). to keep it inside, In each button I should be able to write three short lines (each line may be one or two word). Note: the app is for android devices and will not be distributed through google play. Alternative solution to safeguard the app will be welcomed and negotiated. cheers