objective c - iPhone: Do I need to implement all methods for UIScrollViewDelegate (or any delegate) -



objective c - iPhone: Do I need to implement all methods for UIScrollViewDelegate (or any delegate) -

suppose create uiviewcontroller uiscrollviewdelegate.

do need implement methods delegate, or can implement 1 care about?

if cmd + click in xcode have declared implement protocol

<uiscrollviewdelegate>

xcode take header file protocol defined. here can see of methods uiscrollviewdelegate declared @optional hence can implement ones want.

if prefer documentation apple marks required methods required method in tasks section.

additionally compiler show warnings if conform protocol not implement required methods.

iphone objective-c

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