iOS开发中常用的宏定义

尺寸宏

#define StatusBar_HEIGHT 20

#define NavigationBar_HEIGHT 44

#define NavigationBarIcon 20

#define TabBar_HEIGHT 49

#define TabBarIcon 30

#define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)

#define SCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height) 

打印宏

• 替换NSLog来使用，debug模式下可以打印很多方法名，行信息。

    #ifdef DEBUG
    #   define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
    #else  
    #   define DLog(...)  
    #endif
  

• 直接替换NSLog

    #if DEBUG  
    #define NSLog(FORMAT, ...)  fprintf(stderr,"\nfunction:%s line:%d content:%s\n", __FUNCTION__, __LINE__, [[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String]);  
    #else  
    #define NSLog(FORMAT, ...) nil  
    #endif
  

• DEBUG 模式下打印日志,当前行以及弹出一个警告

    #ifdef DEBUG
    #   define ULog(fmt, ...)  { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[NSString stringWithFormat:@"%s\n [Line %d] ", __PRETTY_FUNCTION__, __LINE__] message:[NSString stringWithFormat:fmt, ##__VA_ARGS__]  delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil]; [alert show]; }
    #else
    #   define ULog(...)
    #endif
  

系统宏

• 获取版本

    #define IOS_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]
    #define CurrentSystemVersion [[UIDevice currentDevice] systemVersion]
  

• 获取当前语言

    #define CurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])
  

• 判断是真机还是模拟器

    #if TARGET_OS_IPHONE  
    //iPhone Device  
    #endif  
  
    #if TARGET_IPHONE_SIMULATOR  
    //iPhone Simulator  
    #endif
  

• 检查系统版本

    #define SYSTEM_VERSION_EQUAL_TO(v)                  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
    #define SYSTEM_VERSION_GREATER_THAN(v)              ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
    #define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
    #define SYSTEM_VERSION_LESS_THAN(v)                 ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
    #define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v)     ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)
  

• 内存宏

    //使用ARC和不使用ARC
    #if __has_feature(objc_arc)
    //compiling with ARC
    #else
    // compiling without ARC
    #endif
  
    #pragma mark - common functions
    #define RELEASE_SAFELY(__POINTER) { [__POINTER release]; __POINTER = nil; }
  
    //释放一个对象
    #define SAFE_DELETE(P) if(P) { [P release], P = nil; }
  
    #define SAFE_RELEASE(x) [x release];x=nil
  

• 图片宏

    //读取本地图片
    #define LOADIMAGE(file,ext) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle]pathForResource:file ofType:ext]]
  
    //定义UIImage对象
    #define IMAGE(A) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:A ofType:nil]]
  
    //定义UIImage对象
    //#define ImageNamed(_pointer) [UIImage imageNamed:[UIUtil imageName:_pointer]]
  
    //前两种宏性能高，省内存
    //第三个没有必要使用，因为我们可以使用Xcode的插件
  

• 颜色宏

    // 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]
  
    //带有RGBA的颜色设置
    #define COLOR(R, G, B, A) [UIColor colorWithRed:R/255.0 green:G/255.0 blue:B/255.0 alpha:A]
  
    // 获取RGB颜色
    #define RGBA(r,g,b,a) [UIColor colorWithRed:r/255.0f green:g/255.0f blue:b/255.0f alpha:a]
    #define RGB(r,g,b) RGBA(r,g,b,1.0f)
  
    //背景色
    #define BACKGROUND_COLOR [UIColor colorWithRed:242.0/255.0 green:236.0/255.0 blue:231.0/255.0 alpha:1.0]
  
    //清除背景色
    #define CLEARCOLOR [UIColor clearColor]
  
    #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)]
  

• 其他宏

    //方正黑体简体字体定义
    #define FONT(F) [UIFont fontWithName:@"FZHTJW--GB1-0" size:F]
  
    //定义一个API
    #define APIURL                @"http://xxxxx/"
    //登陆API
    #define APILogin              [APIURL stringByAppendingString:@"Login"]
  
    //设置View的tag属性
    #define VIEWWITHTAG(_OBJECT, _TAG)    [_OBJECT viewWithTag : _TAG]
    //程序的本地化,引用国际化的文件
    #define MyLocal(x, ...) NSLocalizedString(x, nil)
  
    //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)
  
    //NSUserDefaults 实例化
    #define USER_DEFAULT [NSUserDefaults standardUserDefaults]
  
  
    //由角度获取弧度 有弧度获取角度
    #define degreesToRadian(x) (M_PI * (x) / 180.0)
    #define radianToDegrees(radian) (radian*180.0)/(M_PI)
  

• 单例宏

    #define SYNTHESIZE_SINGLETON_FOR_CLASS(classname) \
    \
    static classname *shared##classname = nil; \
    \
    + (classname *)shared##classname \
    { \
    @synchronized(self) \
    { \
    if (shared##classname == nil) \
    { \
    shared##classname = [[self alloc] init]; \
    } \
    } \
    \
    return shared##classname; \
    } \
    \
    + (id)allocWithZone:(NSZone *)zone \
    { \
    @synchronized(self) \
    { \
    if (shared##classname == nil) \
    { \
    shared##classname = [super allocWithZone:zone]; \
    return shared##classname; \
    } \
    } \
    \
    return nil; \
    } \
    \
    - (id)copyWithZone:(NSZone *)zone \
    { \
    return self; \
    }