常见的宏定义

NSString *bundleIdentifier = [[NSBundle mainBundle] bundleIdentifier];///silence.SZDemo

 /** 允许后台获取用户位置(iOS9.0) */
if([[UIDevice currentDevice].systemVersion floatValue] >= 9.0){}

//获取系统对象
#define kApplication        [UIApplication sharedApplication]
#define kAppWindow          [UIApplication sharedApplication].delegate.window
#define kAppDelegate        [AppDelegate shareAppDelegate]
#define kRootViewController [UIApplication sharedApplication].delegate.window.rootViewController
#define kUserDefaults       [NSUserDefaults standardUserDefaults]
#define kNotificationCenter [NSNotificationCenter defaultCenter]

#define kAppDelegate ((AppDelegate *)[UIApplication sharedApplication].delegate)
#define kAppWindow  [UIApplication sharedApplication].keyWindow

#define kStatusBarHeight [[UIApplication sharedApplication] statusBarFrame].size.height
#define kNavBarHeight 44.0
#define kTabBarHeight ([[UIApplication sharedApplication] statusBarFrame].size.height>20?83:49)
#define kTopHeight (kStatusBarHeight + kNavBarHeight)

//View 圆角和加边框
#define ViewBorderRadius(View, Radius, Width, Color)\
\
[View.layer setCornerRadius:(Radius)];\
[View.layer setMasksToBounds:YES];\
[View.layer setBorderWidth:(Width)];\
[View.layer setBorderColor:[Color CGColor]]

// View 圆角
#define ViewRadius(View, Radius)\
\
[View.layer setCornerRadius:(Radius)];\
[View.layer setMasksToBounds:YES]

// 当前系统版本
#define CurrentSystemVersion [[UIDevice currentDevice].systemVersion doubleValue]
//当前语言
#define CurrentLanguage (［NSLocale preferredLanguages] objectAtIndex:0])

//数据验证
#define StrValid(f) (f!=nil && [f isKindOfClass:[NSString class]] && ![f isEqualToString:@""])
#define SafeStr(f) (StrValid(f) ? f:@"")
#define HasString(str,key) ([str rangeOfString:key].location!=NSNotFound)

#define ValidStr(f) StrValid(f)
#define ValidDict(f) (f!=nil && [f isKindOfClass:[NSDictionary class]])
#define ValidArray(f) (f!=nil && [f isKindOfClass:[NSArray class]] && [f count]>0)
#define ValidNum(f) (f!=nil && [f isKindOfClass:[NSNumber class]])
#define ValidClass(f,cls) (f!=nil && [f isKindOfClass:[cls class]])
#define ValidData(f) (f!=nil && [f isKindOfClass:[NSData class]])

//获取一段时间间隔
#define kStartTime CFAbsoluteTime start = CFAbsoluteTimeGetCurrent();
#define kEndTime  NSLog(@"Time: %f", CFAbsoluteTimeGetCurrent() - start)
//打印当前方法名
#define ITTDPRINTMETHODNAME() ITTDPRINT(@"%s", __PRETTY_FUNCTION__)

//发送通知
#define KPostNotification(name,obj) [[NSNotificationCenter defaultCenter] postNotificationName:name object:obj];

//单例化一个类
#define SINGLETON_FOR_HEADER(className) \
\
+ (className *)shared##className;

#define SINGLETON_FOR_CLASS(className) \
\
+ (className *)shared##className { \
static className *shared##className = nil; \
static dispatch_once_t onceToken; \
dispatch_once(&onceToken, ^{ \
shared##className = [[self alloc] init]; \
}); \
return shared##className; \
}

//获取当前版本的biuld
#define BIULD_VERSION [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleVersion"]
//获取当前版本号
#define BUNDLE_VERSION [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"]
//获取当前设备的UDID
#define DIV_UUID [[[UIDevice currentDevice] identifierForVendor] UUIDString]

如果大家有其他的常用的宏定义，欢迎添加,东西如果不全面,请批评和指正! (1. 判断机型
, 2.适配iPhone Xs MAX TabBar和导航,适配6s为基准,ipd,iPhone自适应大小, 3.获取系统版本 iOS 13 , 4.GRB 颜色设置, 5.用于正则式,并非正则式, 6.常用提示框, 7.是否为空或是[NSNull null], 8.字符串是否为空, 9.数组是否为空, 10.便捷方式创建NSNumber类型, 11.便捷创建NSString, 12.线程执行方法, 13.单例创建, 14.通过字典的key 获取NSString,NSNumber,NSDictionary, 15.block 声明 16.NSString转UTF8 17.去空格,首尾空格和换行符,去掉所有的空格),18. 字体设置, 19.获取相关权限,20.弱引用和强引用, 21.获取图片资源, 22.arc 和mrc 会陆续更新最新使用的方法... , 23.字体设置 , 24. 存取值 , 25.获取图片和获取版本号

14:通过字典的key 获取 NSString,NSNumber,NSDictionary ,NSArray (推荐使用)

常用方法: 1.计算Label多行的高度, 2.登录密码正则表达式(大字母或者小写字母,数字,特殊符号,必须有都含有,8-16位) ,3.返回指定的界面 4.获取网络运行商 ,5.自我封装NSdate 常用方法(不完善持续更新...)

附加:Xcode注释和推荐使用

// FIXME: (标示处代码需要修正，使用方法)  // FIXME: 😆
// TODO:  (标示处有功能代码待编写，使用方法) // TODO:😆
// !!!:  (标示处代码需要注意，使用方法) // !!!:😆
// MARK:  (标记，和#pragma mark效果相同) // MARK:😆

局部常量：static const NSString *NAME = @“fansion”;//用static修饰后外部不能访问
全局常量：不管在哪个文件夹，外部都能访问；
const NSString *NAME = @“fansion”;//*NAME不能被修改，NAME可以
NSString const *NAME = @“fansion”;//*NAME不能被修改，NAME可以
NSString *const NAME = @“fansion”;//*NAME能被修改，NAME不可以
1.判断机型

//判断是否为iPhone
#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

//判断是否为iPad
#define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

//判断是否为ipod
#define IS_IPOD ([[[UIDevice currentDevice] model] isEqualToString:@"iPod touch"])


// 判断 iPad
#define DX_UI_IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

// 判断iPhone X
#define DX_Is_iPhoneX ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2436), [[UIScreen mainScreen] currentMode].size) : NO)

//判断iPHoneXr | 11
#define DX_Is_iPhoneXR ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(828, 1792), [[UIScreen mainScreen] currentMode].size) && !DX_UI_IS_IPAD : NO)

//判断iPHoneXs | 11Pro
#define DX_Is_iPhoneXS ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2436), [[UIScreen mainScreen] currentMode].size) && !DX_UI_IS_IPAD : NO)

//判断iPhoneXs Max | 11ProMax
#define DX_Is_iPhoneXS_MAX ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1242, 2688), [[UIScreen mainScreen] currentMode].size) && !DX_UI_IS_IPAD : NO)

//判断iPhone12_Mini
#define DX_Is_iPhone12_Mini ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1080, 2340), [[UIScreen mainScreen] currentMode].size) && !DX_UI_IS_IPAD : NO)

//判断iPhone12 | 12Pro
#define DX_Is_iPhone12 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1170, 2532), [[UIScreen mainScreen] currentMode].size) && !DX_UI_IS_IPAD : NO)

//判断iPhone12 Pro Max
#define DX_Is_iPhone12_ProMax ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1284, 2778), [[UIScreen mainScreen] currentMode].size) && !DX_UI_IS_IPAD : NO)

//x系列
#define DX_IS_IPhoneX_All (DX_Is_iPhoneX || DX_Is_iPhoneXR || DX_Is_iPhoneXS || DX_Is_iPhoneXS_MAX || DX_Is_iPhone12_Mini || DX_Is_iPhone12 || DX_Is_iPhone12_ProMax)


2.适配 iPhone X TabBar和导航 区别

#define kScreenWidth            ([[UIScreen mainScreen] bounds].size.width)

#define kScreenHeight            ([[UIScreen mainScreen] bounds].size.height)

/**适配 iPhone X TabBar和导航区别

   * Top区别:iPhone X 为例:导航(44 points)+状态栏(44 points)= 88 points

   *        Iphone 6s为例:导航(44 points)+状态栏(20 points)= 64 points

   * Bottom区别:iPhone X 为例: 83 points高度(TabBar) = Danger Area(34 points) + 原来的49 points

   *          Iphone 6s为例:49 points高度(TabBar) = 49 points

   */

//iPhoneX / iPhoneXS

#define  isIphoneX_XS    (kScreenWidth ==375.f&& kScreenHeight ==812.f? YES : NO)

//iPhoneXR / iPhoneXSMax

#define  isIphoneXR_XSMax    (kScreenWidth ==414.f&& kScreenHeight ==896.f? YES : NO)

#define  isFullScreen    (isIphoneX_XS || isIphoneXR_XSMax)

#define  StatusBarHeight    (isFullScreen ?44.f:20.f)

#define  NavigationBarHeight  44.f

#define  TabbarHeight        (isFullScreen ? (49.f+34.f) :49.f)

#define  TabbarSafeBottomHeight        (isFullScreen ?34.f:0.f)

#define  StatusBarAndNavigationBarHeight  (isFullScreen ?88.f:64.f)

/* iOS设备 */
#define kDevice_Is_iPhone4s ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)
#define kDevice_Is_iPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)
#define kDevice_Is_iPhone6 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(750, 1334), [[UIScreen mainScreen] currentMode].size) : NO)
#define kDevice_Is_iPhone6Plus ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1242, 2208), [[UIScreen mainScreen] currentMode].size) : NO)
#define iPhone6PlusBigMode ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2001), [[UIScreen mainScreen]currentMode].size) : NO)
#define iphoneX ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2436), [[UIScreen mainScreen]currentMode].size) : NO)

#define PW ([UIScreen mainScreen].bounds.size.width/375)
#define PH ([UIScreen mainScreen].bounds.size.height/667)
#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width
#define SCREEN_HEIGHT [UIScreen mainScreen].bounds.size.height

//6s适配参数
#define KsuitParam (kDevice_Is_iPhone6Plus ?1.12:(kDevice_Is_iPhone6?1.0:(iPhone6PlusBigMode ?1.01:(iphoneX ? 1.0 : 0.85)))) //以6s为基准图
获取系统版本
#ifndef __IPHONE_13_0
#define __IPHONE_13_0 130000
#endif

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_13_0
...
#endif

#define IOS_SYSTEM_STRING [[UIDevice currentDevice] systemVersion]
#define IOS11_OR_LATER ([[[UIDevice currentDevice] systemVersion] floatValue] >= 11.0)
#define IOS10_OR_LATER ([[[UIDevice currentDevice] systemVersion] floatValue] >= 10.0)
#define IOS9_OR_LATER  ([[[UIDevice currentDevice] systemVersion] floatValue] >= 9.0)
#define IOS8_OR_LATER  ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
#define IOS7_OR_LATER  ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0)
4.GRB 颜色设置

/** 颜色RGB */
#define HSVCOLOR(h,s,v) [UIColor colorWithHue:h saturation:s value:v alpha:1]
#define HSVACOLOR(h,s,v,a) [UIColor colorWithHue:h saturation:s value:v alpha:a]

/** 16进制色值参数转换 */
#define UIColorFromRGB(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]
4.ImageNamed 设置

#define ImageNamed(imageName) [UIImage imageNamed:[NSString stringWithFormat:@"%@",imageName]]
5.用于正则式

/** 用于正则式 */
/** 用于正则式 */
#define NUM @"0123456789"
#define ALPHA @"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
#define ALPHANUM @"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
/** 验证手机号及固话方法 */
#define TelephoneNUM  @"^(0[0-9]{2,3})?([2-9][0-9]{6,7})+(-[0-9]{1,4})?$|(^(13[0-9]|15[0|3|6|7|8|9]|18[8|9])\\d{8}$)"
/** 判断社会信用代码证 */
#define SocialCreditNUM  @"^([0-9ABCDEFGHJKLMNPQRTUWXY]{2})([0-9]{6})([0-9ABCDEFGHJKLMNPQRTUWXY]{9})([0-9Y])$"
/** 工商税号 */
#define BusinessCirclesNUM  @"[0-9]\\\\d{13}([0-9]|X)$"
/** 邮政编码 */
#define CodeNUM  @"^[0-8]\\\\d{5}(?!\\\\d)$"
/** 验证身份证号（15位或18位数字) */
#define IDCardNUM  @"\\d{14}[[0-9],0-9xX]"
/** 验证Email地址 */
#define EmailNUM  @"^\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\.\\w+([-.]\\w+)*$"
/** 整数或者小数 */
#define IntAndDecimalNUM  @"^[0-9]+([.]{0,1}[0-9]+){0,1}$"
/** 验证URL */
#define URLNUM  @"^http://([\\w-]+\.)+[\\w-]+(/[\\w-./?%&=]*)?$"
/** 验证QQ */
#define QQNUM  @"[1-9][0-9]\{4,\}"
/** 匹配帐号是否合法 */
#define AccountLegalityNUM  @"^[a-zA-Z][a-zA-Z0-9_]{4,15}$"
/** 只能输入汉字 */
#define ChineseCharactersNUM  @"^[\u4e00-\u9fa5]{0,}$"
/** 匹配空白行的正则表达式 */
#define SpaceNUM  @"^\n\s*\r"
6.常用NSlog打印

/** 打印 NSlog */
#ifdef DEBUG
#   define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);

/**打印信息*/
#define NSLogI(fmt, ...) NSLog((@"%s 💙INFO [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);

/**调试信息*/
#define NSLogD(fmt, ...) NSLog((@"%s 💚DEBUG [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);

/**错误信息*/
#define NSLogE(fmt, ...) NSLog((@"%s ❤️ERROR [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);

/**未知信息*/
#define NSLogU(fmt, ...) NSLog((@"%s 🧡UNKNOW [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#   define DLog(...)
#endif
6.常用提示框

/** 弹出提示框 UIAlertView */
#define showMessageView(__MESSAGE__) \
UIAlertView *alertView_ = [[UIAlertView alloc] initWithTitle:@"提示" \
message:__MESSAGE__ \
delegate:nil \
cancelButtonTitle:@"确定" \
otherButtonTitles:nil]; \
[alertView_ show];

/** 弹出提示框 UIAlertController */
#define showMessageController(MESSAGE,VC) \
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提示" message:MESSAGE preferredStyle:UIAlertControllerStyleAlert]; \
UIAlertAction *action = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil]; \
[alertController addAction:action]; \
[VC presentViewController:alertController animated:YES completion:nil]
7.是否为空或是[NSNull null]

/**是否为空或是[NSNull null] */
#define NotNilAndNull(_ref)  (((_ref) != nil) && (![(_ref) isEqual:[NSNull null]]))
#define IsNilOrNull(_ref)   (((_ref) == nil) || ([(_ref) isEqual:[NSNull null]])
字符串是否为空
/**是否为空或是[NSNull null] */
#define IsStrEmpty(_ref)    (((_ref) == nil) || ([(_ref) isEqual:[NSNull null]]) ||([(_ref)isEqualToString:@""]))
数组是否为空
#define IsArrEmpty(_ref)    (((_ref) == nil) || ([(_ref) isEqual:[NSNull null]]) ||([(_ref) count] == 0))
10.便捷方式创建NSNumber类型

/** 便捷方式创建NSNumber类型 */
#undef    __INT
#define __INT( __x )            [NSNumber numberWithInt:(NSInteger)__x]

#undef    __UINT
#define __UINT( __x )            [NSNumber numberWithUnsignedInt:(NSUInteger)__x]

#undef    __FLOAT
#define    __FLOAT( __x )            [NSNumber numberWithFloat:(float)__x]

#undef    __DOUBLE
#define    __DOUBLE( __x )            [NSNumber numberWithDouble:(double)__x]
11.便捷创建NSString

/** 便捷创建NSString */
#undef  STR_FROM_INT
#define STR_FROM_INT( __x )     [NSString stringWithFormat:@"%d", (__x)]
12.线程执行方法

/** 线程执行方法 */
#define Foreground_Begin  dispatch_async(dispatch_get_main_queue(), ^{
#define Foreground_End    });

#define Background_Begin  dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{\
@autoreleasepool {
#define Background_End          }\
});
13.单例创建

/** 线程执行方法 */
#undef    AS_SINGLETON
#define AS_SINGLETON( __class ) \
+ (__class *)sharedInstance;

#undef    DEF_SINGLETON
#define DEF_SINGLETON( __class ) \
+ (__class *)sharedInstance \
{ \
static dispatch_once_t once; \
static __class * __singleton__; \
dispatch_once( &once, ^{ __singleton__ = [[__class alloc] init]; } ); \
return __singleton__; \
}

通过字典的key 获取NSString,NSNumber,NSDictionary ,NSArray
.h创建
/** 通过字典的key 获取value (判断转换为)NSString */
extern NSString* EncodeStringFromDic(NSDictionary *dic, NSString *key);
/** 通过字典的key 获取value (判断转换为)NSNumber */
extern NSNumber* EncodeNumberFromDic(NSDictionary *dic, NSString *key);
extern NSDictionary *EncodeDicFromDic(NSDictionary *dic, NSString *key);
extern NSArray      *EncodeArrayFromDic(NSDictionary *dic, NSString *key);
extern NSArray      *EncodeArrayFromDicUsingParseBlock(NSDictionary *dic, NSString *key, id(^parseBlock)(NSDictionary *innerDic));

.m创建

NSString* EncodeStringFromDic(NSDictionary *dic, NSString *key)
{
    id temp = [dic objectForKey:key];
    if ([temp isKindOfClass:[NSString class]])
    {
        return temp;
    }
    else if ([temp isKindOfClass:[NSNumber class]])
    {
        return [temp stringValue];
    }
    return nil;
}

NSNumber* EncodeNumberFromDic(NSDictionary *dic, NSString *key)
{
    id temp = [dic objectForKey:key];
    if ([temp isKindOfClass:[NSString class]])
    {
        return [NSNumber numberWithDouble:[temp doubleValue]];
    }
    else if ([temp isKindOfClass:[NSNumber class]])
    {
        return temp;
    }
    return nil;
}

NSDictionary *EncodeDicFromDic(NSDictionary *dic, NSString *key)
{
    id temp = [dic objectForKey:key];
    if ([temp isKindOfClass:[NSDictionary class]])
    {
        return temp;
    }
    return nil;
}

NSArray      *EncodeArrayFromDic(NSDictionary *dic, NSString *key)
{
    id temp = [dic objectForKey:key];
    if ([temp isKindOfClass:[NSArray class]])
    {
        return temp;
    }
    return nil;
}

NSArray      *EncodeArrayFromDicUsingParseBlock(NSDictionary *dic, NSString *key, id(^parseBlock)(NSDictionary *innerDic))
{
    NSArray *tempList = EncodeArrayFromDic(dic, key);
    if ([tempList count])
    {
        NSMutableArray *array = [NSMutableArray arrayWithCapacity:[tempList count]];
        for (NSDictionary *item in tempList)
        {
            id dto = parseBlock(item);
            if (dto) {
                [array addObject:dto];
            }
        }
        return array;
    }
    return nil;
}


15.block 声明

#ifdef NS_BLOCKS_AVAILABLE
typedef void (^ZLyBasicBlock)(void);
typedef void (^ZLyOperationCallBackBlock)(BOOL isSuccess, NSString *errorMsg);
typedef void (^ZLyArrayBlock)(NSArray *list);
#endif
16.NSString转UTF8

#define OC(str) [NSString stringWithCString:(str) encoding:NSUTF8StringEncoding]
17.去空格,首尾空格和换行符,去掉所有的空格

/** 去掉首尾空格和换行符 */
#define FirstAndLastSpace(str) [str stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]
/**去掉所有空格*/
#define RemoveAllSpaces(str) [str stringByReplacingOccurrencesOfString:@" " withString:@""]
18.字体设置

#define Font_Size(f)            [UIFont systemFontOfSize:(f)]
#define Font_Bold_Size(f)       [UIFont boldSystemFontOfSize:(f)]
#define Font_Italic_Size(f)     [UIFont italicSystemFontOfSize:(f)]
#define FontMediumSize(s) [UIFont fontWithName:@"xxx" size:s]
#define FontRegularSize(s) [UIFont fontWithName:@"xxx" size:s]

19.获取相关权限. 相加,地位等

//获取相机权限状态
#define CameraStatus [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo]
#define CameraDenied ((CameraStatus == AVAuthorizationStatusRestricted)||(CameraStatus == AVAuthorizationStatusDenied))
#define CameraAllowed (!CameraDenyed)
 
/** 定位权限*/
#define LocationStatus [CLLocationManager authorizationStatus];
#define LocationAllowed ([CLLocationManager locationServicesEnabled] && !((status == kCLAuthorizationStatusDenied) || (status == kCLAuthorizationStatusRestricted)))
#define LocationDenied (!LocationAllowed)
 
/** 消息推送权限*/
#define PushClose (([[UIDevice currentDevice].systemVersion floatValue]>=8.0f)?(UIUserNotificationTypeNone == [[UIApplication sharedApplication] currentUserNotificationSettings].types):(UIRemoteNotificationTypeNone == [[UIApplication sharedApplication] enabledRemoteNotificationTypes]))
#define PushOpen (!PushClose)
20.弱引用,强引用

#define WeakSelf(type)  __weak typeof(type) weak##type = type;
#define StrongSelf(type)  __strong typeof(type) type = weak##type;
21.获取图片资源

#define kGetImage(imageName) [UIImage imageNamed:[NSString stringWithFormat:@"%@",imageName]]
22.arc OR mrc

#if __has_feature(objc_arc)
// ARC
#else
// MRC
#endif
23.字体设置

#define IsIphone6P          SCREEN_WIDTH==414
#define SizeScale           (IsIphone6P ? 1.5 : 1)
#define kFontSize(value)    value*SizeScale
#define kFont(value)        [UIFont systemFontOfSize:value*SizeScale]
/**36px 导航栏文字**/
#define ZLyFont_36 [UIFont systemFontOfSize:36 / (([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)?750.0:1536.0) * [UIScreen mainScreen].bounds.size.width]
/**32px 按钮文字,标题文字**/
#define ZLyFont_32 [UIFont systemFontOfSize:32 / (([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)?750.0:1536.0) * [UIScreen mainScreen].bounds.size.width]
/**30px 正文内容**/
#define ZLyFont_30 [UIFont systemFontOfSize:30 / (([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)?750.0:1536.0) * [UIScreen mainScreen].bounds.size.width]
/**28px 填写描述**/
#define ZLyFont_28 [UIFont systemFontOfSize:28 / (([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)?750.0:1536.0) * [UIScreen mainScreen].bounds.size.width]
/**26px 辅助文字**/
#define ZLyFont_26 [UIFont systemFontOfSize:26 / (([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)?750.0:1536.0) * [UIScreen mainScreen].bounds.size.width]
/**24px 辅助文字**/
#define ZLyFont_24 [UIFont systemFontOfSize:24 / (([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)?750.0:1536.0) * [UIScreen mainScreen].bounds.size.width]
/**22px 说明性文字**/
#define ZLyFont_22 [UIFont systemFontOfSize:22 / (([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)?750.0:1536.0) * [UIScreen mainScreen].bounds.size.width]
/**20px 辅助说明性文字**/
#define ZLyFont_20 [UIFont systemFontOfSize:20 / (([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)?750.0:1536.0) * [UIScreen mainScreen].bounds.size.width]
/**100px **/
#define ZLyFont_100 [UIFont systemFontOfSize:100 / (([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone)?750.0:1536.0) * [UIScreen mainScreen].bounds.size.width]
24 存取数据

//存值
#define kSaveMyDefault(A,B) [[NSUserDefaults standardUserDefaults] setObject:B forKey:A]
//取值
#define kFetchMyDefault(A) [[NSUserDefaults standardUserDefaults] objectForKey:A]

#define kSaveZLyDefault(A,B) [[NSUserDefaults standardUserDefaults] setInteger:B forKey:A]

#define kFetchZLyDefault(A) [[NSUserDefaults standardUserDefaults] integerForKey:A]
25.获取图片和版本号

#define ImageName(name)  [UIImage imageNamed:name]

#define FontSize(size) [UIFont systemFontOfSize:size]

#define VERSION (NSString *)[[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"]
1.计算Label多行的高度

/**
 1.根据text的font和字符串自动算出size（重点）
 2.本身最大宽度
 MAXFLOAT:最大高度为最大浮点数
 **/
-(CGFloat)calculateString:(NSString *)str Width:(NSInteger)width Font:(NSInteger)font {
    CGSize size = [str boundingRectWithSize:CGSizeMake(width, 100000) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName : [UIFont systemFontOfSize:font]} context:nil].size;
    return size.height;
}
2.登录密码正则表达式

   NSString *regex =@"(?=.*?[a-zA-Z])(?=.*?[0-9])(?=.*?[^\\w\\s]).{8,16}";
    NSPredicate *predicate1 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
    // 字符串判断，然后BOOL值
    BOOL result1 = [predicate1 evaluateWithObject:newpasswd];
3.返回指定的界面

for (UIViewController *controller in self.navigationController.viewControllers) {
if ([controller isKindOfClass:[要返回的类名 class]]) {
    [self.navigationController popToViewController:controller animated:YES];
}
}
或者dissVC
[self.presentingViewController.presentingvc dismissViewControllerAnimated:NO completion:nil];
4.获取网络运营商

//获取网络运营商
+(NSString *)CTTelephonyNetworkProviders
{
    //获取本机运营商名称
    CTTelephonyNetworkInfo *info = [[CTTelephonyNetworkInfo alloc] init];
    CTCarrier *carrier = [info subscriberCellularProvider];
    //当前手机所属运营商名称
    NSString *mobile;
    //先判断有没有SIM卡，如果没有则不获取本机运营商
    if (!carrier.isoCountryCode) {
        //        NSLog(@"没有SIM卡");
        mobile = @"无运营商";
    }else{
        mobile = [carrier carrierName];
    }
    return mobile;
}

5.NSdate 转换(nsstring 格式)


+ (NSInteger)compareDate:(NSString*)startDate withDate:(NSString*)endDate;
/**只算小时和分钟 HH:mm **/
+ (NSString *)dateStringWithHouseAndSecond:(NSString *)dateStr;
/* YYYY-MM-dd EEE HH:mm */
+(NSString *)dateString:(NSString *)dateStr;
/**EEE**/
+(NSString *)dateWeekString:(NSString *)dateStr;
/**MM-dd**/
+(NSString *)dateMonthAndDayString:(NSString *)dateStr;
/** yyyy-MM-dd HH:mm -----  MM-dd **/
+(NSString *)dateNewMonthAndDayString:(NSString *)dateStr;
/** yyyy-MM-dd HH:mm -----  yyyy **/
+(NSString *)dateAndYearString:(NSString *)dateStr;
/** yyyy-MM-dd HH:mm -----  yyyy-MM-dd 新增**/
+(NSString *)dateAndYearAndMonthAndDayString:(NSString *)dateStr;
/**获取当前时间**/
+(NSString*)getCurrentTimes;
/**获取周数 周日-周六 (国外日历)**/
+(NSString *)obtainCurrentDateAndUpdateInterface:(NSString *)datestring;

/****获取当前的时间 YYYY-MM-dd HH:mm****/
+(NSString*)getCurrentTimesYearAndMonthAndDayAndHoursAndSecond;

//获取当前的时间 只展示时间HH
+(NSString*)getCurrentTimesHH;

//获取当前的时间 YYYY-MM-dd HH:mm:ss
+(NSString*)getCurrentTimesYYYYMMddHHmmss ;
//获取当前的时间 YYYY-MM-dd HH:mm --- HH:mm
+(NSString *)dateHoursAndMinuesString:(NSString *)dateStr;

+ (NSString *)getCurrentWeek;
#pragma mark 获取当前第一天日期(周日)
+ (NSString *)obtainCurrentDateSunday:(NSString *)sundayString;
/**获取周数 周日-周六 (国外日历)**/
#pragma mark 获取当前第一天日期(周一)
+ (NSString *)obtainCurrentDateMonday:(NSString *)mondayString ;
/**获取周数 周日-周六 (国外日历)**/
#pragma mark 获取当前第一天日期(周二)
+ (NSString *)obtainCurrentDateTuesday:(NSString *)TuesdayString;
/**获取周数 周日-周六 (国外日历)**/
#pragma mark 获取当前第一天日期(周三)
+ (NSString *)obtainCurrentDateWenday:(NSString *)WendayString;
/**获取周数 周日-周六 (国外日历)**/
#pragma mark 获取当前第一天日期(周四)
+ (NSString *)obtainCurrentDateThursday:(NSString *)ThursdayString;
/**获取周数 周日-周六 (国外日历)**/
#pragma mark 获取当前第一天日期(周五)
+ (NSString *)obtainCurrentDateFriday:(NSString *)FridayString;
#pragma mark 获取当前第后天日期(周六)
+ (NSString *)obtainCurrentDateSaturday:(NSString *)SaturdayString;

字符串反转

第一种：
- (NSString *)reverseWordsInString:(NSString *)str
{    
    NSMutableString *newString = [[NSMutableString alloc] initWithCapacity:str.length];
    for (NSInteger i = str.length - 1; i >= 0 ; i --)
    {
        unichar ch = [str characterAtIndex:i];       
        [newString appendFormat:@"%c", ch];    
    }    
     return newString;
}

//第二种：
- (NSString*)reverseWordsInString:(NSString*)str
{    
     NSMutableString *reverString = [NSMutableString stringWithCapacity:str.length];    
     [str enumerateSubstringsInRange:NSMakeRange(0, str.length) options:NSStringEnumerationReverse | NSStringEnumerationByComposedCharacterSequences  usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) { 
          [reverString appendString:substring];                         
      }];    
     return reverString;
}

模态推出透明界面

UIViewController *vc = [[UIViewController alloc] init];
UINavigationController *na = [[UINavigationController alloc] initWithRootViewController:vc];

if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
{
     na.modalPresentationStyle = UIModalPresentationOverCurrentContext;
}
else
{
     self.modalPresentationStyle=UIModalPresentationCurrentContext;
}

[self presentViewController:na animated:YES completion:nil];

禁止锁屏，

默认情况下，当设备一段时间没有触控动作时，iOS会锁住屏幕。但有一些应用是不需要锁屏的，比如视频播放器。

[UIApplication sharedApplication].idleTimerDisabled = YES;
或
[[UIApplication sharedApplication] setIdleTimerDisabled:YES];

iOS 获取汉字的拼音

+ (NSString *)transform:(NSString *)chinese
{    
    //将NSString装换成NSMutableString 
    NSMutableString *pinyin = [chinese mutableCopy];    
    //将汉字转换为拼音(带音标)    
    CFStringTransform((__bridge CFMutableStringRef)pinyin, NULL, kCFStringTransformMandarinLatin, NO);    
    NSLog(@"%@", pinyin);    
    //去掉拼音的音标    
    CFStringTransform((__bridge CFMutableStringRef)pinyin, NULL, kCFStringTransformStripCombiningMarks, NO);    
    NSLog(@"%@", pinyin);    
    //返回最近结果    
    return pinyin;
 }

NSArray 快速求总和 最大值 最小值 和 平均值

NSArray *array = [NSArray arrayWithObjects:@"2.0", @"2.3", @"3.0", @"4.0", @"10", nil];
CGFloat sum = [[array valueForKeyPath:@"@sum.floatValue"] floatValue];
CGFloat avg = [[array valueForKeyPath:@"@avg.floatValue"] floatValue];
CGFloat max =[[array valueForKeyPath:@"@max.floatValue"] floatValue];
CGFloat min =[[array valueForKeyPath:@"@min.floatValue"] floatValue];
NSLog(@"%f\n%f\n%f\n%f",sum,avg,max,min);

关于NSDateFormatter的格式

G: 公元时代，例如AD公元
yy: 年的后2位
yyyy: 完整年
MM: 月，显示为1-12
MMM: 月，显示为英文月份简写,如 Jan
MMMM: 月，显示为英文月份全称，如 Janualy
dd: 日，2位数表示，如02
d: 日，1-2位显示，如 2
EEE: 简写星期几，如Sun
EEEE: 全写星期几，如Sunday
aa: 上下午，AM/PM
H: 时，24小时制，0-23
K：时，12小时制，0-11
m: 分，1-2位
mm: 分，2位
s: 秒，1-2位
ss: 秒，2位
S: 毫秒

阿拉伯数字转中文格式

+(NSString *)translation:(NSString *)arebic
{  
    NSString *str = arebic;
    NSArray *arabic_numerals = @[@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"0"];
    NSArray *chinese_numerals = @[@"一",@"二",@"三",@"四",@"五",@"六",@"七",@"八",@"九",@"零"];
    NSArray *digits = @[@"个",@"十",@"百",@"千",@"万",@"十",@"百",@"千",@"亿",@"十",@"百",@"千",@"兆"];
    NSDictionary *dictionary = [NSDictionary dictionaryWithObjects:chinese_numerals forKeys:arabic_numerals];

    NSMutableArray *sums = [NSMutableArray array];
    for (int i = 0; i < str.length; i ++) {
        NSString *substr = [str substringWithRange:NSMakeRange(i, 1)];
        NSString *a = [dictionary objectForKey:substr];
        NSString *b = digits[str.length -i-1];
        NSString *sum = [a stringByAppendingString:b];
        if ([a isEqualToString:chinese_numerals[9]])
        {
            if([b isEqualToString:digits[4]] || [b isEqualToString:digits[8]])
            {
                sum = b;
                if ([[sums lastObject] isEqualToString:chinese_numerals[9]])
                {
                    [sums removeLastObject];
                }
            }else
            {
                sum = chinese_numerals[9];
            }

            if ([[sums lastObject] isEqualToString:sum])
            {
                continue;
            }
        }

        [sums addObject:sum];
    }

    NSString *sumStr = [sums componentsJoinedByString:@""];
    NSString *chinese = [sumStr substringToIndex:sumStr.length-1];
    NSLog(@"%@",str);
    NSLog(@"%@",chinese);
    return chinese;
}

字符串中是否含有中文

+ (BOOL)checkIsChinese:(NSString *)string
{
    for (int i=0; i<string.length; i++)
    {
        unichar ch = [string characterAtIndex:i];
        if (0x4E00 <= ch  && ch <= 0x9FA5)
        {
            return YES;
        }
    }
    return NO;
}

dispatch_group的使用

 dispatch_group_t dispatchGroup = dispatch_group_create();
    dispatch_group_enter(dispatchGroup);
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        NSLog(@"第一个请求完成");
        dispatch_group_leave(dispatchGroup);
    });
    
    dispatch_group_enter(dispatchGroup);
    
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(10 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        NSLog(@"第二个请求完成");
        dispatch_group_leave(dispatchGroup);
    });
    
    dispatch_group_notify(dispatchGroup, dispatch_get_main_queue(), ^(){
        NSLog(@"请求完成");
    });

UITextField每四位加一个空格,实现代理

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
    // 四位加一个空格
    if ([string isEqualToString:@""])
    {
        // 删除字符
        if ((textField.text.length - 2) % 5 == 0)
        {
            textField.text = [textField.text substringToIndex:textField.text.length - 1];
        }
        return YES;
    }
    else
    {
        if (textField.text.length % 5 == 0)
        {
            textField.text = [NSString stringWithFormat:@"%@ ", textField.text];
        }
    }
    return YES;
}

获取手机安装的应用

Class c =NSClassFromString(@"LSApplicationWorkspace");
id s = [(id)c performSelector:NSSelectorFromString(@"defaultWorkspace")];
NSArray *array = [s performSelector:NSSelectorFromString(@"allInstalledApplications")];
for (id item in array)
{
    NSLog(@"%@",[item performSelector:NSSelectorFromString(@"applicationIdentifier")]);
    //NSLog(@"%@",[item performSelector:NSSelectorFromString(@"bundleIdentifier")]);
    NSLog(@"%@",[item performSelector:NSSelectorFromString(@"bundleVersion")]);
    NSLog(@"%@",[item performSelector:NSSelectorFromString(@"shortVersionString")]);
}

应用内打开系统设置界面

//iOS8之后
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
//如果App没有添加权限，显示的是设定界面。如果App有添加权限（例如通知），显示的是App的设定界面。

如何获取WebView所有的图片地址，

在网页加载完成时，通过js获取图片和添加点击的识别方式

//WKWebView
- (void)webView:(WKWebView *)webView didFinishNavigation:(null_unspecified WKNavigation *)navigation
{
    static  NSString * const jsGetImages =
    @"function getImages(){\
    var objs = document.getElementsByTagName(\"img\");\
    var imgScr = '';\
    for(var i=0;i<objs.length;i++){\
    imgScr = imgScr + objs[i].src + '+';\
    };\
    return imgScr;\
    };";
    
    [webView evaluateJavaScript:jsGetImages completionHandler:nil];
    [webView evaluateJavaScript:@"getImages()" completionHandler:^(id _Nullable result, NSError * _Nullable error) {
        NSLog(@"%@",result);
    }];
}

获取到webview的高度

CGFloat height = [[self.webView stringByEvaluatingJavaScriptFromString:@"document.body.offsetHeight"] floatValue];

获取UIColor的RGBA值

UIColor *color = [UIColor colorWithRed:0.2 green:0.3 blue:0.9 alpha:1.0];
const CGFloat *components = CGColorGetComponents(color.CGColor);
NSLog(@"Red: %.1f", components[0]);
NSLog(@"Green: %.1f", components[1]);
NSLog(@"Blue: %.1f", components[2]);
NSLog(@"Alpha: %.1f", components[3]);

UILabel显示Html

    NSString *htmlString = @"Some html string";
    NSAttributedString *attrStr = [[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUnicodeStringEncoding] options:@{NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType} documentAttributes:nil error:nil];
    UILabel *label = [[UILabel alloc] initWithFrame:self.view.bounds];
    label.attributedText = attrStr;
    [self.view addSubview:label];