4.01~ios开发常用的宏

原文：http://www.cocoachina.com/bbs/read.php?tid=137317&page=1

收集起来，丢到一个头文件中，这样开发起来就快多啦！我先分享一些，大家可以拿出自己私藏的，盖楼，吼吼～

#define NavigationBar_HEIGHT 44
 
#define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)
#define SCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height)
#define SAFE_RELEASE(x) [x release];x=nil
#define IOS_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]
#define CurrentSystemVersion ([[UIDevice currentDevice] systemVersion])  
#define CurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])
 
#define BACKGROUND_COLOR [UIColor colorWithRed:242.0/255.0 green:236.0/255.0 blue:231.0/255.0 alpha:1.0]
 
 
 
//use dlog to print while in debug model
#ifdef DEBUG
#   define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#   define DLog(...)
#endif
 
 
#define isRetina ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)
#define iPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)
#define isPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
 
 
#if TARGET_OS_IPHONE
//iPhone Device
#endif
 
#if TARGET_IPHONE_SIMULATOR
//iPhone Simulator
#endif
 
 
//ARC
#if __has_feature(objc_arc)
    //compiling with ARC
#else
    // compiling without ARC
#endif
 
 
//G－C－D
#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)
 
 
#define USER_DEFAULT [NSUserDefaults standardUserDefaults]
#define ImageNamed(_pointer) [UIImage imageNamed:[UIUtil imageName:_pointer]]
 
#pragma mark - common functions
#define RELEASE_SAFELY(__POINTER) { [__POINTER release]; __POINTER = nil; }
 
 
#pragma mark - degrees/radian functions
#define degreesToRadian(x) (M_PI * (x) / 180.0)
#define radianToDegrees(radian) (radian*180.0)/(M_PI)
 
#pragma mark - color functions
#define RGBCOLOR(r,g,b) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:1]
#define RGBACOLOR(r,g,b,a) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:(a)]
#define ITTDEBUG
#define ITTLOGLEVEL_INFO     10
#define ITTLOGLEVEL_WARNING  3
#define ITTLOGLEVEL_ERROR    1
 
#ifndef ITTMAXLOGLEVEL
 
#ifdef DEBUG
    #define ITTMAXLOGLEVEL ITTLOGLEVEL_INFO
#else
    #define ITTMAXLOGLEVEL ITTLOGLEVEL_ERROR
#endif
 
#endif
 
// The general purpose logger. This ignores logging levels.
#ifdef ITTDEBUG
  #define ITTDPRINT(xx, ...)  NSLog(@"%s(%d): " xx, __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)
#else
  #define ITTDPRINT(xx, ...)  ((void)0)
#endif
 
// Prints the current method's name.
#define ITTDPRINTMETHODNAME() ITTDPRINT(@"%s", __PRETTY_FUNCTION__)
 
// Log-level based logging macros.
#if ITTLOGLEVEL_ERROR <= ITTMAXLOGLEVEL
  #define ITTDERROR(xx, ...)  ITTDPRINT(xx, ##__VA_ARGS__)
#else
  #define ITTDERROR(xx, ...)  ((void)0)
#endif
 
#if ITTLOGLEVEL_WARNING <= ITTMAXLOGLEVEL
  #define ITTDWARNING(xx, ...)  ITTDPRINT(xx, ##__VA_ARGS__)
#else
  #define ITTDWARNING(xx, ...)  ((void)0)
#endif
 
#if ITTLOGLEVEL_INFO <= ITTMAXLOGLEVEL
  #define ITTDINFO(xx, ...)  ITTDPRINT(xx, ##__VA_ARGS__)
#else
  #define ITTDINFO(xx, ...)  ((void)0)
#endif
 
#ifdef ITTDEBUG
  #define ITTDCONDITIONLOG(condition, xx, ...) { if ((condition)) { \
                                                  ITTDPRINT(xx, ##__VA_ARGS__); \
                                                } \
                                              } ((void)0)
#else
  #define ITTDCONDITIONLOG(condition, xx, ...) ((void)0)
#endif
 
#define ITTAssert(condition, ...)                                       \
do {                                                                      \
    if (!(condition)) {                                                     \
        [[NSAssertionHandler currentHandler]                                  \
            handleFailureInFunction:[NSString stringWithUTF8String:__PRETTY_FUNCTION__] \
                                file:[NSString stringWithUTF8String:__FILE__]  \
                            lineNumber:__LINE__                                  \
                            description:__VA_ARGS__];                             \
    }                                                                       \
} while(0)
 

//读取本地图片的 和imageNamed一样，但是性能比后者要强很多，两个参数，前面一个是 文件名，后面一个是类型
//例如 imageView.image =  LOADIMAGE(@"文件名",@"png");

#define LOADIMAGE(file,ext) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle]pathForResource:file ofType:ext]]

#define MyLocal(x, ...) NSLocalizedString(x, nil)

这样就不需要填默认的参数了. 对于需要反复使用的方法比较方便.
比如说
MyLocal(@"0094")              代替了
NSLocalizedString(@"0094", nil)

// rgb颜色转换（16进制->10进制）
#define UIColorFromRGB(rgbValue) [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]

#define alertContent(content) \

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" \
                                                  message:content \
                                                  delegate:nil   \
                                                  cancelButtonTitle:@"确定" \
                                                  otherButtonTitles:nil];  \
[alert show];  \
[alert release]; 

#define CGRectMake(a,b,c,d)  CGRectMake((a)/320.0*[[UIScreen mainScreen] applicationFrame].size.width,(b)/460.0*[[UIScreen mainScreen] applicationFrame].size.height,(c)/320.0*[[UIScreen mainScreen] applicationFrame].size.width,(d)/460.0*[[UIScreen mainScreen] applicationFrame].size.height)
这个是刚出iphone5不想挨个的去找以前320x460分辨率时候用的。
这样写以后可以直接写CGRectMake(0,0,320,460);就是整个屏幕的大小了

//RGB颜色
#define RGB(RED,GREEN,BLUE) [UIColor colorWithRed:RED/255.00 green:GREEN/255.00 blue:BLUE/255.00 alpha:1.0]


//release屏蔽NSLog
//放在.pch文件里
#ifdef DEBUG
#else
#define NSLog(...) {};
#endif

//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)


//Device
#define isRetina ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)

#define iPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)

#define isPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

//区分模拟器和真机

#if TARGET_OS_IPHONE
//iPhone Device
#endif

#if TARGET_IPHONE_SIMULATOR
//iPhone Simulator
#endif


//ARC
#if __has_feature(objc_arc)
    //compiling with ARC
#else
    // compiling without ARC
#endif