iOS 常用宏定义

下面是在iOS开发中常用的一些宏定义：

            
                //一般的提示信息
                #define mAlertView(title, msg) 
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:msg delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show];

#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)// GCD#define BACK(block) dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), block)#define MAIN(block) dispatch_async(dispatch_get_main_queue(),block)//----------界面設計相關-------#define mNavBarHeight         44#define mTabBarHeight         50#define mScreenWidth          ([UIScreen mainScreen].bounds.size.width)#define mScreenHeight         ([UIScreen mainScreen].bounds.size.height)//----------設備系統相關---------#define mRetina   ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)#define mIsiP5    ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136),[[UIScreen mainScreen] currentMode].size) : NO)#define mIsiP6    ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(750, 1334),[[UIScreen mainScreen] currentMode].size) : NO)#define mIsiP6Plus    ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1242, 2208),[[UIScreen mainScreen] currentMode].size) : NO)#define mIsPad    (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)#define mIsiphone (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)#define mIsIOS7OrLater ([mSystemVersion floatValue] >= 7.0 ? YES : NO)#define mIsIOS8OrLater ([mSystemVersion floatValue] >= 8.0 ? YES : NO)#define mSystemVersion   ([[UIDevice currentDevice] systemVersion])#define mDeviceOpenUDID  ([OpenUDID value])#define mDeviceModel     ([[UIDevice currentDevice] model])#define mDeviceName      ([[UIDevice currentDevice] name])#define mCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])#define mAPPVersion      [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleVersion"]#define mFirstLaunch     mAPPVersion     //以系統版本來判斷是否第一次啓動，包括升級後啓動#define mFirstRun        @"firstRun"     //判斷是否第一次運行，升級後啓動不算