ios 项目里常用的宏

在项目里.pch 文件最后加入我们想要定义的宏就可以了，在整个项目中我们都可以使用这些宏。

#pragma mark - safe release

/*

 * 释放内存

 */

#define RELEASE(_Ptr)\

if (_Ptr)\

{\

[_Ptr release];\

_Ptr = nil;\

}

#pragma mark -  width and height

/*

 * 屏幕尺寸，APP尺寸

 */

#define SCREEEN_WIDTH [UIScreen mainScreen].bounds.size.width

#define SCREEEN_HEIGHT [UIScreen mainScreen].bounds.size.height

#define APPFRAME_WIDTH  [UIScreen mainScreen].applicationFrame.size.width

#define APPFRAME_HEIGHT  [UIScreen mainScreen].applicationFrame.size.height

#pragma mark -  iPhone or iPad

/*

 * 是否是iPhone或iPad

 */

#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)

#pragma mark -  ios system

/*

 * 系统版本，偏好语言

 */

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

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

#pragma mark - color functions

/*

 * 颜色运算

 */

#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)];

#pragma mark -  nsnotification

/*

 * 订阅/取消消息通知

 */

#define Add_Notification(selectorName, notificationName) [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(selectorName) name:notificationName object:nil];

#define Remove_Notification(notificationName) [[NSNotificationCenter defaultCenter] removeObserver:self name:notificationName object:nil];

#pragma mark - debug

/*

 * 打印debug信息

 */

//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

#pragma mark - ARC

/*

 *是否使用了ARC

 */

#if __has_feature(objc_arc)

//compiling with ARC

#else

// compiling without ARC

#endif

#pragma mark - GCD

/*

 *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)

ios 项目里常用的宏,,5-wow.com