Relativelayout or LinearLayout in ios iphone development?

Question

I want to add a subview in the top of my view, I have to recalculate the origin y value for all of other views and re-position them to leave space for the new added view.

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Answer 1

iOS is much more focused on pixel accuracy than Android it is, which uses relative layouts as it has to deal with multiple screen sizes. However, in iOS, the Interface Builder is an incredibly good tool included in XCode, which you can use.

Also, if you are just adding subviews in a repetitive manner, you could override the layoutSubviews method and use that to handle to manual labour for you. You mention having to "recalculate the origin y value for all of other views and re-position them to leave space for the new added view" ... You could code that into your layoutSubviews so you don't have to do it yourself each time.

Unfortunately, though, the SDK doesn't have any of this included by default. autoresizingMask's are great but you can't use that for initial layout; it's for automatic really it when rotating only.