I want to know that how one should proceed in building animated splash screen. I already did the animated splash screen with images but here I want to add custom animation like something is drawn on screen etc. can anyone guide me through this.
simply you need to present a UIViewController which is hold your animations and dismiss it when your app is ready to launch. but also I think its better to follow apple HIG .. as apple describe you should
Supply a launch image to improve user experience.
Avoid using your launch image as an opportunity to provide:
An “application entry experience,” such as a splash screen An About window Branding elements, unless they are a static part of your application’s first screen Because users are likely to switch among applications frequently, you should make every effort to cut launch time to a minimum, and you should design a launch image that downplays the experience rather than drawing attention to it.
Generally, design a launch image that is identical to the first screen of the application.
Exceptions:
Text. The launch image is static, so any text you display in it will not be localized.
UI elements that might change. Avoid including elements that might look different when the application finishes launching, so that users don’t experience a flash between the launch image and the first application screen.