ios常用的宏

一、常用的颜色的宏

/*
 宏的定义
 */
// RGB颜色转换（16进制->10进制）
#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]

// 获取RGB颜色
#define RGBA(r,g,b,a) [UIColor colorWithRed:r/255.0f green:g/255.0f blue:b/255.0f alpha:a]
#define RGB(r,g,b) RGBA(r,g,b,1.0f)

// RGB  随机色
#define random(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:(a)/255.0]
#define randomColor random(arc4random_uniform(256), arc4random_uniform(256), arc4random_uniform(256), arc4random_uniform(256))
@interface ViewController ()

@end

@implementation ViewController
- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = UIColorFromRGB(0xFCFBFB);
//    self.view.backgroundColor = RGB(20,34,50);
    
//    self.view.backgroundColor = randomColor;
}

二、获取屏幕的宽度

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

#define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height
/**
 *  比例系数适配
 */
#define m6Scale      kScreenWidth/750.0
#define widthradio   [UIScreen mainScreen].bounds.size.width  / 375.0
#define heightradio   [UIScreen mainScreen].bounds.size.height / 667.0

三、打印

/**
 *  如果不需要log,把1改成0
 */

#define  myTest  1
#if myTest

#define NSLog(FORMAT, ...) fprintf(stderr,"[%s:%d行] %s\n",[[[NSString stringWithUTF8String:__FILE__] lastPathComponent] UTF8String], __LINE__, [[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String]);

#else

#define NSLog(FORMAT, ...) nil
#endif

============================或者
//项目开发中，我们会在许多地方加上Log，但是发布的时候又不想用这些Log，我们也不可能一个一个的删除，所以自定义Log是必然的！

#ifdef DEBUG
#define LRLog(...) NSLog(@"%s 第%d行 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])

#else

#define LRLog(...)

#endif

四、判断设备的系统版本和机型

/**
 监测系统版本
 */
#define iOS8 ([[UIDevice currentDevice].systemVersion intValue]>=8?YES:NO)
#define iOS9 ([[UIDevice currentDevice].systemVersion intValue]>=9?YES:NO)
#define iOS10 ([[UIDevice currentDevice].systemVersion intValue]>=10?YES:NO)
#define iOS11Later ([UIDevice currentDevice].systemVersion.floatValue >=11.0f)
#define iPhoneX ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1125, 2436), [[UIScreen mainScreen] currentMode].size) : NO)
/**
 监测具体机型
 */
//导入头文件
#import "sys/utsname.h"


- (NSString *)getCurrentDeviceModel
{
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *platform = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    //iPhone
    if ([platform isEqualToString:@"iPhone5,1"]) return @"iPhone 5 (A1428)";
    if ([platform isEqualToString:@"iPhone5,2"]) return @"iPhone 5 (A1429/A1442)";
    if ([platform isEqualToString:@"iPhone5,3"]) return @"iPhone 5c (A1456/A1532)";
    if ([platform isEqualToString:@"iPhone5,4"]) return @"iPhone 5c (A1507/A1516/A1526/A1529)";
    if ([platform isEqualToString:@"iPhone6,1"]) return @"iPhone 5s (A1453/A1533)";
    if ([platform isEqualToString:@"iPhone6,2"]) return @"iPhone 5s (A1457/A1518/A1528/A1530)";
    if ([platform isEqualToString:@"iPhone7,2"]) return @"iPhone 6 (A1549/A1586)";
    if ([platform isEqualToString:@"iPhone7,1"]) return @"iPhone 6 Plus (A1522/A1524)";
    if ([platform isEqualToString:@"iPhone8,1"]) return @"iPhone 6s (A1633/A1688/A1691/A1700)";
    if ([platform isEqualToString:@"iPhone8,2"]) return @"iPhone 6s Plus (A1634/A1687/A1690/A1699)";
    if ([platform isEqualToString:@"iPhone10,3"]) return @"iPhone X";
    if ([platform isEqualToString:@"iPhone10,6"]) return @"iPhone X";
    
    return platform;
}

参考：https://www.theiphonewiki.com/wiki/Models ，这个是苹果官方的设备类型说明，可以参考一下
五、NSUserDefault

//存储到本地
#define UserDefaults(Object, Key)\
[[NSUserDefaults standardUserDefaults] setObject:Object forKey:Key];\


#define defaults [NSUserDefaults standardUserDefaults]