XMG系列第一天代理解耦

@class XMGAddViewController,XMGContact;

@protocol XMGAddViewControllerDelegate <NSObject>

@optional

- (void)addViewController:(XMGAddViewController *)addVc didClickAddBtnWithContact:(XMGContact *)contact;

@end

// 1.通知代理做事情

// _delegate = _contactVc

if ([_delegaterespondsToSelector:@selector(addViewController:didClickAddBtnWithContact:)])
{

[_delegate addViewController:self didClickAddBtnWithContact:c];

}