It depends on the end product and what level of device integration you hope to have (and when you hope to have it). To start with, it sounds like you’d be best served by designing a standard web application with mobile support… if you are diligent and design EVERYTHING to support mobile browsers then there … Read more
To make apps (mobile apps, I think you mean) for different OS’s(I think you mean the different OS’s on each phone),(assumption: that you’re coding it from scratch) you learn a programming language first, then proceed to learn how to make apps for a particular OS. Typically, you purchase a book (look online for good recommendations) … Read more
Use EmailAddressEditField.. here is the way EmailAddressEditField email=new EmailAddressEditField(“Email Address: “, “”); String address =email.getText(); int at = address.indexOf(“@”); int len = address.length(); String host = address.substring(at + 1, len); int dot = host.lastIndexOf(‘.’); len = host.length(); if (at <= 0 || at > len – 6 && dot < 0 || dot >= len … Read more
There’s a better approach than you described. Use preprocessor and alx-task to build different application versions for different OS version. Then you will have one alx + set of folders with cod files, where every folder has cod files for particular platform version. Alx file will contain directives to install cod files from the suitable … Read more