前言:
在工作中, 很多小伙伴都會(huì)在PCH文件定義一些常用的宏官套,但是又怕寫(xiě)這些簡(jiǎn)單的宏浪費(fèi)時(shí)間宣决,又有時(shí)候忘記怎么定義了怎么辦挟炬?本人在工作中也是如此邻耕。所以在這里給大家分享一些常用的宏定義,喜歡的小伙伴可以直接在項(xiàng)目中使用(持續(xù)更新)舍败!
為了大家使用方便招狸,請(qǐng)點(diǎn)擊GitHub - 宏定義頭文件下載!
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(gè)網(wǎng)友(脫離語(yǔ)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#defineSCREEN_WIDTH ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?[UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale:[UIScreen mainScreen].bounds.size.width)#defineSCREENH_HEIGHT ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?[UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale:[UIScreen mainScreen].bounds.size.height)#defineSCREEN_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#defineSCREEN_WIDTH [UIScreen mainScreen].bounds.size.width#defineSCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height#defineSCREEN_SIZE [UIScreen mainScreen].bounds.size#endif
2.獲取通知中心
#defineLRNotificationCenter [NSNotificationCenter defaultCenter]
3.設(shè)置隨機(jī)顏色
#defineLRRandomColor [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)/255.0green:(g)/255.0blue:(b)/255.0alpha:1.0]#defineLRRGBAColor(r, g, b, a) [UIColor colorWithRed:(r)/255.0green:(r)/255.0blue:(r)/255.0alpha:a]// clear背景顏色#defineLRClearColor [UIColor clearColor]
5.自定義高效率的 NSLog
項(xiàng)目開(kāi)發(fā)中邻薯,我們會(huì)在許多地方加上Log裙戏,但是發(fā)布的時(shí)候又不想用這些Log,我們也不可能一個(gè)一個(gè)的刪除厕诡,所以自定義Log是必然的累榜!
#ifdefDEBUG#defineLRLog(...) NSLog(@"%s 第%d行 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])#else#defineLRLog(...)#endif
6.弱引用/強(qiáng)引用
#defineLRWeakSelf(type)__weaktypeof(type)weak##type=type;#defineLRStrongSelf(type)__strongtypeof(type)type=weak##type;
使用方法.png
第二種使用方法,定義完弱引用宏之后灵嫌,直接敲weak.png
7.設(shè)置 view 圓角和邊框
#define LRViewBorderRadius(View, Radius, Width, Color)\\[View.layersetCornerRadius:(Radius)];\[View.layersetMasksToBounds:YES];\[View.layersetBorderWidth:(Width)];\[View.layersetBorderColor:[Color CGColor]]
8.由角度轉(zhuǎn)換弧度 由弧度轉(zhuǎn)換角度
#define LRDegreesToRadian(x)(M_PI* (x) / 180.0)
#define LRRadianToDegrees(radian) (radian*180.0)/(M_PI)
9.設(shè)置加載提示框(第三方框架:Toast)
此宏定義非常好用信柿,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:0.6 position: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(gè)類(lèi)似冀偶,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 = [[UIView alloc] 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#definekGetImage(imageName) [UIImage imageNamed:[NSString stringWithFormat:@"%@",imageName]]
12.獲取當(dāng)前語(yǔ)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(gè)方法不是特別靠譜#defineIOS_SYSTEM_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]//建議使用這個(gè)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(jī)還是模擬器
// 判斷是不是iOS系統(tǒng),如果是iOS系統(tǒng)在真機(jī)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(jī)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(xiě)GCD的方法渔嚷,所以在此定義為宏使用更加方便簡(jiǎn)潔!如下圖:
GCD 宏使用方法.png
//GCD - 一次性執(zhí)行#definekDISPATCH_ONCE_BLOCK(onceBlock) static dispatch_once_t onceToken; dispatch_once(&onceToken, onceBlock);//GCD - 在Main線程上運(yùn)行#definekDISPATCH_MAIN_THREAD(mainQueueBlock) dispatch_async(dispatch_get_main_queue(), mainQueueBlock);//GCD - 開(kāi)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(gè)常量字符串稠曼,都會(huì)定義成一個(gè)宏形病,最典型的例子就是服務(wù)器的地址。在此所有用宏定義常量字符的小伙伴以后就用const來(lái)定義吧霞幅!為什么呢 漠吻?我們看看:
宏的用法: 一般字符串抽成宏,代碼抽成宏使用司恳。
const用法:一般常用的字符串定義成const(對(duì)于常量字符串蘋(píng)果推薦我們使用const)途乃。
宏與const區(qū)別:
1.編譯時(shí)刻不同,宏屬于預(yù)編譯扔傅,const屬于編譯時(shí)刻
2.宏能定義代碼耍共,const不能,多個(gè)宏對(duì)于編譯會(huì)相對(duì)時(shí)間較長(zhǎng)猎塞,影響開(kāi)發(fā)效率试读,調(diào)試過(guò)慢,const只會(huì)編譯一次荠耽,縮短編譯時(shí)間钩骇。
3.宏不會(huì)檢查錯(cuò)誤,const會(huì)檢查錯(cuò)誤
通過(guò)以上對(duì)比铝量,我們以后在開(kāi)發(fā)中如果定義一個(gè)常量字符串就用const倘屹,定義代碼就用宏。我們來(lái)看看如何使用const慢叨,列舉實(shí)際項(xiàng)目使用方法如下圖:
FANCommonConst.h中聲明一個(gè)常量字符串.png
FANCommonConst.m中實(shí)現(xiàn)一個(gè)常量字符串.png
在上圖本人只是簡(jiǎn)單定義幾個(gè)常量字符串纽匙,我們創(chuàng)建一個(gè)類(lèi)只要在.h和.m中包含#import 就可以,然后再.h文件聲明一個(gè)字符串插爹,在.m中實(shí)現(xiàn)就可以了哄辣,最后把這個(gè)類(lèi)導(dǎo)入PCH文件中,我們就可任意的發(fā)揮啦赠尾!
如果喜歡的小伙伴請(qǐng)點(diǎn)一個(gè)贊吧力穗,歡迎留言補(bǔ)充與給出不足之處!