宏定義文件 github地址:https://github.com/luran2358/LRMacroDefinition
1.獲取屏幕寬度與高度
#defineSCREEN_WIDTH[UIScreen mainScreen].bounds.size.width
#defineSCREENH_HEIGHT[UIScreen mainScreen].bounds.size.height
根據(jù)一個網(wǎng)友(脫離語言)提醒, 如果支持橫屏可以用下面的宏:
#if__IPHONE_OS_VERSION_MAX_ALLOWED >=80000// 當(dāng)前Xcode支持iOS8及以上
#define SCREEN_WIDTH ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?[UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale:[UIScreen mainScreen].bounds.size.width)
#define SCREENH_HEIGHT ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?[UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale:[UIScreen mainScreen].bounds.size.height)
#define SCREEN_SIZE ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?CGSizeMake([UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale,[UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale):[UIScreen mainScreen].bounds.size)
#else
#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width
#define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height
#define SCREEN_SIZE [UIScreen mainScreen].bounds.size
#endif
2.獲取通知中心
#defineLRNotificationCenter [NSNotificationCenter defaultCenter]
3.設(shè)置隨機顏色
#define LRRandomColor [UIColor colorWithRed:arc4random_uniform(256)/255.0green:arc4random_uniform(256)/255.0blue:arc4random_uniform(256)/255.0alpha:1.0]
4.設(shè)置RGB顏色/設(shè)置RGBA顏色
#defineLRRGBColor(r, g, b)[UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]
#defineLRRGBAColor(r, g, b, a)[UIColor colorWithRed:(r)/255.0 green:(r)/255.0 blue:(r)/255.0 alpha:a]
// clear背景顏色
#defineLRClearColor[UIColor clearColor]
5.自定義高效率的 NSLog
項目開發(fā)中搀缠,我們會在許多地方加上Log苞也,但是發(fā)布的時候又不想用這些Log勺疼,我們也不可能一個一個的刪除真友,所以自定義Log是必然的!
#ifdefDEBUG
#defineLRLog(...) NSLog(@"%s 第%d行 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])
#else
#defineLRLog(...)
#endif
6.弱引用/強引用
#define LRWeakSelf(type)__weaktypeof(type)weak##type=type;
#define LRStrongSelf(type)__strongtypeof(type)type= weak##type;
使用方法.png
第二種使用方法煤伟,定義完弱引用宏之后恐似,直接敲weak.png
7.設(shè)置 view 圓角和邊框
#define LRViewBorderRadius(View, Radius, Width, Color)\\
[View.layer setCornerRadius:(Radius)];\
[View.layer setMasksToBounds:YES];\
[View.layer setBorderWidth:(Width)];\
[View.layer setBorderColor:[Color CGColor]]
8.由角度轉(zhuǎn)換弧度 由弧度轉(zhuǎn)換角度
#defineLRDegreesToRadian(x) (M_PI * (x) /180.0)
#defineLRRadianToDegrees(radian) (radian*180.0)/(M_PI)
9.設(shè)置加載提示框(第三方框架:Toast)
此宏定義非常好用,但是小伙伴需要CocoaPods導(dǎo)入第三方框架:Toast
使用方法如下:
LRToast(@"網(wǎng)絡(luò)加載失敗");
#define LRToast(str)????????????? CSToastStyle *style = [[CSToastStyle alloc] initWithDefaultStyle]; \
[kWindow? makeToast:str duration:0.6position:CSToastPositionCenter style:style];\
kWindow.userInteractionEnabled = NO; \
dispatch_after(dispatch_time(DISPATCH_TIME_NOW,(int64_t)(0.6* NSEC_PER_SEC)),dispatch_get_main_queue(),^{\
kWindow.userInteractionEnabled = YES;\
});\
10.設(shè)置加載提示框(第三方框架:MBProgressHUD)
此宏定義同上一個類似涣旨,如下圖:
MBProgressHUD提示框.png
// 加載
#definekShowNetworkActivityIndicator() [UIApplication sharedApplication].networkActivityIndicatorVisible = YES
// 收起加載
#defineHideNetworkActivityIndicator()????? [UIApplication sharedApplication].networkActivityIndicatorVisible = NO
// 設(shè)置加載
#defineNetworkActivityIndicatorVisible(x)? [UIApplication sharedApplication].networkActivityIndicatorVisible = x
#definekWindow [UIApplication sharedApplication].keyWindow
#definekBackView???????? for (UIView *item in kWindow.subviews) { \
if(item.tag ==10000) \
{ \
[item removeFromSuperview]; \
UIView * aView = [[UIViewalloc] init]; \
aView.frame = [UIScreen mainScreen].bounds; \
aView.tag =10000; \
aView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.3]; \
[kWindow addSubview:aView]; \
} \
} \
#definekShowHUDAndActivity kBackView;[MBProgressHUD showHUDAddedTo:kWindow animated:YES];kShowNetworkActivityIndicator()
#definekHiddenHUD [MBProgressHUD hideAllHUDsForView:kWindow animated:YES]
#definekRemoveBackView???????? for (UIView *item in kWindow.subviews) { \
if(item.tag ==10000) \
{ \
[UIView animateWithDuration:0.4animations:^{ \
item.alpha =0.0; \
} completion:^(BOOL finished) { \
[item removeFromSuperview]; \
}]; \
} \
} \
#definekHiddenHUDAndAvtivity kRemoveBackView;kHiddenHUD;HideNetworkActivityIndicator()
11.獲取view的frame/圖片資源
//獲取view的frame(不建議使用)
//#define kGetViewWidth(view)? view.frame.size.width
//#define kGetViewHeight(view) view.frame.size.height
//#define kGetViewX(view)????? view.frame.origin.x
//#define kGetViewY(view)????? view.frame.origin.y
//獲取圖片資源
#define kGetImage(imageName) [UIImage imageNamed:[NSString stringWithFormat:@"%@",imageName]]
12.獲取當(dāng)前語言
#defineLRCurrentLanguage([[NSLocale preferredLanguages]objectAtIndex:0])
13.使用 ARC 和 MRC
#if__has_feature(objc_arc)
// ARC
#else
// MRC
#endif
14.判斷當(dāng)前的iPhone設(shè)備/系統(tǒng)版本
//判斷是否為iPhone
#defineIS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
#defineIS_IPHONE ([[[UIDevice currentDevice] model] isEqualToString:@"iPhone"])
//判斷是否為iPad
#defineIS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
#defineIS_IPAD ([[[UIDevice currentDevice] model] isEqualToString:@"iPad"])
//判斷是否為ipod
#defineIS_IPOD ([[[UIDevice currentDevice] model] isEqualToString:@"iPod touch"])
// 判斷是否為 iPhone 5SE
#defineiPhone5SE [[UIScreen mainScreen] bounds].size.width == 320.0f && [[UIScreen mainScreen] bounds].size.height == 568.0f
// 判斷是否為iPhone 6/6s
#defineiPhone6_6s [[UIScreen mainScreen] bounds].size.width == 375.0f && [[UIScreen mainScreen] bounds].size.height == 667.0f
// 判斷是否為iPhone 6Plus/6sPlus
#defineiPhone6Plus_6sPlus [[UIScreen mainScreen] bounds].size.width == 414.0f && [[UIScreen mainScreen] bounds].size.height == 736.0f
//獲取系統(tǒng)版本
//這個方法不是特別靠譜
#defineIOS_SYSTEM_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]
//建議使用這個方法
#defineIOS_SYSTEM_STRING [[UIDevice currentDevice] systemVersion]
//判斷 iOS 8 或更高的系統(tǒng)版本
#defineIOS_VERSION_8_OR_LATER (([[[UIDevice currentDevice] systemVersion] floatValue] >=8.0)? (YES):(NO))
15.判斷是真機還是模擬器
// 判斷是不是iOS系統(tǒng)歪架,如果是iOS系統(tǒng)在真機和模擬器輸出都是YES
#ifTARGET_OS_IPHONE
#endif
#if(TARGET_IPHONE_SIMULATOR)
// 在模擬器的情況下
#else
// 在真機情況下
#endif
16.沙盒目錄文件
//獲取temp
#definekPathTemp NSTemporaryDirectory()
//獲取沙盒 Document
#definekPathDocument [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]
//獲取沙盒 Cache
#definekPathCache [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]
17.GCD 的宏定義
很多小伙伴都非常煩寫GCD的方法,所以在此定義為宏使用更加方便簡潔霹陡!如下圖:
GCD 宏使用方法.png
//GCD - 一次性執(zhí)行
#definekDISPATCH_ONCE_BLOCK(onceBlock)staticdispatch_once_tonceToken;dispatch_once(&onceToken, onceBlock);
//GCD - 在Main線程上運行
#definekDISPATCH_MAIN_THREAD(mainQueueBlock)dispatch_async(dispatch_get_main_queue(), mainQueueBlock);
//GCD - 開啟異步線程
#definekDISPATCH_GLOBAL_QUEUE_DEFAULT(globalQueueBlock)dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0), globalQueueBlocl);
宏與const 的使用:
很多小伙伴在定義一個常量字符串和蚪,都會定義成一個宏,最典型的例子就是服務(wù)器的地址穆律。在此所有用宏定義常量字符的小伙伴以后就用const來定義吧惠呼!為什么呢 ?我們看看:
宏的用法: 一般字符串抽成宏峦耘,代碼抽成宏使用剔蹋。
const用法:一般常用的字符串定義成const(對于常量字符串蘋果推薦我們使用const)。
宏與const區(qū)別:
1.編譯時刻不同辅髓,宏屬于預(yù)編譯泣崩,const屬于編譯時刻
2.宏能定義代碼少梁,const不能,多個宏對于編譯會相對時間較長矫付,影響開發(fā)效率凯沪,調(diào)試過慢,const只會編譯一次买优,縮短編譯時間妨马。
3.宏不會檢查錯誤,const會檢查錯誤
通過以上對比杀赢,我們以后在開發(fā)中如果定義一個常量字符串就用const烘跺,定義代碼就用宏。我們來看看如何使用const脂崔,列舉實際項目使用方法如下圖:
FANCommonConst.h中聲明一個常量字符串.png
FANCommonConst.m中實現(xiàn)一個常量字符串.png
本文轉(zhuǎn)載自別人滤淳,只為記錄查詢方便。