一個(gè)好的iOS開發(fā)工程師必須學(xué)會(huì)使用宏定義，不僅可以提高開發(fā)效率，而且高端、大氣、上檔次。下面是我總結(jié)的一些常用的宏定義
- 獲取屏幕寬度與高度
#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width
#define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height
- 判斷手機(jī)型號(hào)
#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
#define SCREEN_MAX_LENGTH (MAX(SCREEN_WIDTH, SCREEN_HEIGHT))
#define IS_IPHONE_4 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)
#define IS_IPHONE_5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)
#define IS_IPHONE_6 (IS_IPHONE && SCREEN_MAX_LENGTH == 667.0)
#define IS_IPHONE_6P (IS_IPHONE && SCREEN_MAX_LENGTH == 736.0)
- 字符串是否為空
#define kStringIsEmpty(str) ([str isKindOfClass:[NSNull class]] || str == nil || [str length] < 1 ? YES : NO )
- 數(shù)組是否為空
#define kArrayIsEmpty(array) (array == nil || [array isKindOfClass:[NSNull class]] || array.count == 0)
- 字典是否為空
#define kDictIsEmpty(dic) (dic == nil || [dic isKindOfClass:[NSNull class]] || dic.allKeys == 0)
- 是否是空對(duì)象
#define kObjectIsEmpty(_object) (_object == nil \
|| [_object isKindOfClass:[NSNull class]] \
|| ([_object respondsToSelector:@selector(length)] && [(NSData *)_object length] == 0) \
|| ([_object respondsToSelector:@selector(count)] && [(NSArray *)_object count] == 0))
- 一些縮寫
#define kApplication [UIApplication sharedApplication]
#define kKeyWindow [UIApplication sharedApplication].keyWindow
#define kAppDelegate [UIApplication sharedApplication].delegate
#define kUserDefaults [NSUserDefaults standardUserDefaults]
#define kNotificationCenter [NSNotificationCenter defaultCenter]
- APP版本號(hào)
#define kAppVersion [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"]
- 系統(tǒng)版本號(hào)
#define kSystemVersion [[UIDevice currentDevice] systemVersion]
- 獲取設(shè)備版本
#define IOS_7 [[UIDevice currentDevice].systemVersion floatValue] >= 7.0
#define IOS_8 [[UIDevice currentDevice].systemVersion floatValue] >= 8.0
#define IOS_9 [[UIDevice currentDevice].systemVersion floatValue] >= 9.0
#define IOS_10 [[UIDevice currentDevice].systemVersion floatValue] >= 10.0
- 獲取當(dāng)前語言
#define kCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])
- 判斷是否為iPhone
#define kISiPhone (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
- 判斷是否為iPad
#define kISiPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
- 獲取沙盒Document路徑
#define kDocumentPath [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]
- 獲取沙盒temp路徑
#define kTempPath NSTemporaryDirectory()
- 獲取沙盒Cache路徑
#define kCachePath [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]
- 判斷是真機(jī)還是模擬器
#if TARGET_OS_IPHONE
//真機(jī)
#endif
#if TARGET_IPHONE_SIMULATOR
//模擬器
#endif
- 開發(fā)的時(shí)候打印，但是發(fā)布的時(shí)候不打印的NSLog
#ifdef DEBUG
#define NSLog(...) NSLog(@"%s 第%d行 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])
#else
#define NSLog(...)
#endif
//解決Xcode8+iOS10打印不全的問題
#ifdef DEBUG
#define MSLog(format, ...) printf("[%s] %s [%d行] %s\n", __TIME__, [[[NSString stringWithUTF8String: __FILE__] lastPathComponent] UTF8String], __LINE__, [[NSString stringWithFormat:format, ## __VA_ARGS__] UTF8String]);
#else
#define MSLog(format, ...)
#endif
- 顏色
#define kRGBColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]
#define kRGBAColor(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(r)/255.0 blue:(r)/255.0 alpha:a]
#define kRandomColor kRGBColor(arc4random_uniform(256),arc4random_uniform(256),arc4random_uniform(256))
#define kColorWithHex(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]
- 弱引用/強(qiáng)引用
#define kWeakSelf(type) __weak typeof(type) weak##type = type;
#define kStrongSelf(type) __strong typeof(type) type = weak##type;
- 由角度轉(zhuǎn)換弧度
#define kDegreesToRadian(x) (M_PI * (x) / 180.0)
- 由弧度轉(zhuǎn)換角度
#define kRadianToDegrees(radian) (radian * 180.0) / (M_PI)
- 獲取一段時(shí)間間隔
#define kStartTime CFAbsoluteTime start = CFAbsoluteTimeGetCurrent();
#define kEndTime NSLog(@"Time: %f", CFAbsoluteTimeGetCurrent() - start)
大家記住要把這些宏定義寫在PCH文件中哦~
