Before develop my first iOS application

Unity Engine
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1

hi all,
I’m beginner in iOS development and i want to know -first- before develop my first iOS application, what is i need -exact- to learn to start ? if i program before with c# is it enough or i need to learn new language for iOS ?

2

If you already know or are familiar with C#, your in a good position! It might help to be or become familiar with Obj-C, but that’s really only if you want to do some lower-level, native coding.

You just need to start learning the particulars of Unitys’ features on iOS (ex. the way input is handled), which features are not available (ex. Terrain) and a slightly different set of optimization rules (all of which can only come from reading the Manuals, writing test projects, etc.)

HTH

3

if building an app that will run on iPhone,3gs,4 and ipad…
What screen size settings should be used in Unity ? or should a different target and sized assets be used for every target screen res ?

4

This will depend on exactly what you are doing. A game based around a 3D view will need little or no modification to work on all the devices. A GUI can be made to resize using various techniques (see this thread for one that works with minimal code). If you use an image as a screen backdrop then you may need to consider using version at different resolutions for each device to get the best results.