开发常用宏

9/23/2015 - 2:31 AM

#define kHomePath        NSHomeDirectory()
#define kCachePath      [NSHomeDirectory() stringByAppendingPathComponent:@"Library/Caches"]
#define kDocumentFolder [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]
#define kDocumentFolder2 [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]
#define kLibraryPath [NSHomeDirectory() stringByAppendingPathComponent:@"Library"]
#define kTempPath    NSTemporaryDirectory()
#define kMainBundlePath [[NSBundle mainBundle] bundlePath]
#define kResourcePath  [[NSBundle mainBundle] resourcePath]
#define kExecutablePath [[NSBundle mainBundle] executablePath]

系统

#define CurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])    //获取当前语言
#define isRetina ([[UIScreen mainScreen] scale]== 2 ? YES : NO)    //是否是高清屏
#define isPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) //是否是IPAD

//判断是真机还是模拟器  
#if TARGET_OS_IPHONE  
//iPhone Device  
#endif
#if TARGET_IPHONE_SIMULATOR  
//iPhone Simulator  
#endif

//获取版本
#define IOS_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]
#define CurrentSystemVersion [[UIDevice currentDevice] systemVersion]

//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)

简化

#define USER_DEFAULT [NSUserDefaults standardUserDefaults]

日志

#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)

尺寸

#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)

图片颜色

//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]]

// rgb颜色转换（16进制->10进制）
#define UIColorFromHex(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 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)]

//清除色
#define CLEARCOLOR [UIColor clearColor]

单例

#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; \
}

判空(inline 函数)

static inline BOOL __attribute__((overloadable)) IsEmpty(NSString *s) { return s == nil || [s length] == 0u; }
static inline BOOL __attribute__((overloadable)) IsEmpty(NSData *d) { return d == nil || [d length] == 0u; }
static inline BOOL __attribute__((overloadable)) IsEmpty(NSArray *a) { return a == nil || [a count] == 0u; }
static inline BOOL __attribute__((overloadable)) IsEmpty(NSDictionary *d) { return d == nil || [d count] == 0u; }
static inline BOOL __attribute__((overloadable)) IsEmpty(NSSet *s) { return s == nil || [s count] == 0u; }
static inline BOOL __attribute__((overloadable)) IsEmpty(NSNull *n) { return YES; }
static inline BOOL __attribute__((overloadable)) IsEmpty(id object) { return object == nil; }

----------

static inline BOOL IsEmpty(id thing) {
    return thing == nil || [thing isEqual:[NSNull null]]
    || ([thing respondsToSelector:@selector(length)]
        && [(NSData *)thing length] == 0)
    || ([thing respondsToSelector:@selector(count)]
        && [(NSArray *)thing count] == 0);
}

内存

//安全释放一个对象
#if __has_feature(objc_arc)
//compiling with ARC

#define SAFE_RELEASE(x) x = nil
#define SAFE_DELETE(P) if(P) {P = nil;}
#else
// compiling without ARC

#define SAFE_RELEASE(x) [x release];x=nil
#define SAFE_DELETE(P) if(P) { [P release], P = nil; }
#endif

weakify 和 strongify

#ifndef    weakify
#if __has_feature(objc_arc)

#define weakify( x ) \
_Pragma("clang diagnostic push") \
_Pragma("clang diagnostic ignored \"-Wshadow\"") \
autoreleasepool{} __weak __typeof__(x) __weak_##x##__ = x; \
_Pragma("clang diagnostic pop")

#else

#define weakify( x ) \
_Pragma("clang diagnostic push") \
_Pragma("clang diagnostic ignored \"-Wshadow\"") \
autoreleasepool{} __block __typeof__(x) __block_##x##__ = x; \
_Pragma("clang diagnostic pop")

#endif
#endif

#ifndef    strongify
#if __has_feature(objc_arc)

#define strongify( x ) \
_Pragma("clang diagnostic push") \
_Pragma("clang diagnostic ignored \"-Wshadow\"") \
try{} @finally{} __typeof__(x) x = __weak_##x##__; \
_Pragma("clang diagnostic pop")

#else

#define strongify( x ) \
_Pragma("clang diagnostic push") \
_Pragma("clang diagnostic ignored \"-Wshadow\"") \
try{} @finally{} __typeof__(x) x = __block_##x##__; \
_Pragma("clang diagnostic pop")

#endif
#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)

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