1、获取设备信息

//MZDeviceInfo.h
#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

@interface MZDeviceInfo : NSObject

///获取设备型号
+ (NSString *)deviceModel;

///获取设备版本号
+ (NSString *)systemVersion;

@end

NS_ASSUME_NONNULL_END


//.m
#import "MZDeviceInfo.h"

#import <UIKit/UIDevice.h>
#import <sys/utsname.h>

@implementation MZDeviceInfo

+ (NSString *)systemVersion {
    return [[UIDevice currentDevice] systemVersion];
}

+ (NSString *)deviceModel {
    
    NSString *deviceModel = [[self class] currentModel];
    
    if (deviceModel.length == 0) {
        deviceModel = @"unknown device";
    }
    
    return deviceModel;
}

+ (NSString *)currentModel {
    struct utsname systemInfo;
    uname(&systemInfo);
    
    NSString *platformName = [NSString stringWithCString: systemInfo.machine encoding:NSASCIIStringEncoding];
    
    return [[self machineModels] objectForKey:platformName];
}

+ (NSDictionary *)machineModels {
    static NSDictionary *_machineModels = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        _machineModels = @{@"iPhone1,1": @"iPhone 2G",
                           @"iPhone1,2": @"iPhone 3G",
                           
                           @"iPhone2,1": @"iPhone 3GS",
                           
                           @"iPhone3,1": @"iPhone 4",
                           @"iPhone3,2": @"iPhone 4",
                           @"iPhone3,3": @"iPhone 4",
                           
                           @"iPhone4,1": @"iPhone 4s",
                           
                           @"iPhone5,1": @"iPhone 5",
                           @"iPhone5,2": @"iPhone 5",
                           @"iPhone5,3": @"iPhone 5c",
                           @"iPhone5,4": @"iPhone 5c",
                           
                           @"iPhone6,1": @"iPhone 5s",
                           @"iPhone6,2": @"iPhone 5s",
                           
                           @"iPhone7,1": @"iPhone 6 Plus",
                           @"iPhone7,2": @"iPhone 6",
                           
                           @"iPhone8,1": @"iPhone 6s",
                           @"iPhone8,2": @"iPhone 6s Plus",
                           @"iPhone8,4": @"iPhone SE",
                           
                           @"iPhone9,1": @"iPhone 7",
                           @"iPhone9,2": @"iPhone 7 Plus",
                           
                           @"iPhone10,1": @"iPhone 8",
                           @"iPhone10,2": @"iPhone 8 Plus",
                           @"iPhone10,3": @"iPhone X",
                           @"iPhone10,4": @"iPhone 8",
                           @"iPhone10,5": @"iPhone 8 Plus",
                           @"iPhone10,6": @"iPhone X",
                           @"iPhone11,2": @"iPhone XS",
                           @"iPhone11,4": @"iPhone XS Max",
                           @"iPhone11,6": @"iPhone XS Max",
                           @"iPhone11,8": @"iPhone XR",
                           
                           @"iPad1,1": @"iPad 1G",
                           
                           @"iPad2,1": @"iPad 2",
                           @"iPad2,2": @"iPad 2",
                           @"iPad2,3": @"iPad 2",
                           @"iPad2,4": @"iPad 2",
                           @"iPad2,5": @"iPad Mini 1G",
                           @"iPad2,6": @"iPad Mini 1G",
                           @"iPad2,7": @"iPad Mini 1G",
                           
                           @"iPad3,1": @"iPad 3",
                           @"iPad3,2": @"iPad 3",
                           @"iPad3,3": @"iPad 3",
                           @"iPad3,4": @"iPad 4",
                           @"iPad3,5": @"iPad 4",
                           @"iPad3,6": @"iPad 4",
                           
                           @"iPad4,1": @"iPad Air",
                           @"iPad4,2": @"iPad Air",
                           @"iPad4,3": @"iPad Air",
                           @"iPad4,4": @"iPad Mini 2G",
                           @"iPad4,5": @"iPad Mini 2G",
                           @"iPad4,6": @"iPad Mini 2G",
                           @"iPad4,7": @"iPad Mini 3",
                           @"iPad4,8": @"iPad Mini 3",
                           @"iPad4,9": @"iPad Mini 3",
                           
                           @"iPad5,1": @"iPad Mini 4",
                           @"iPad5,2": @"iPad Mini 4",
                           @"iPad5,3": @"iPad Air 2",
                           @"iPad5,4": @"iPad Air 2",
                           
                           @"iPad6,3": @"iPad Pro 9.7",
                           @"iPad6,4": @"iPad Pro 9.7",
                           @"iPad6,7": @"iPad Pro 12.9",
                           @"iPad6,8": @"iPad Pro 12.9",
                           
                           @"iPod1,1": @"iPod Touch 1G",
                           @"iPod2,1": @"iPod Touch 2G",
                           @"iPod3,1": @"iPod Touch 3G",
                           @"iPod4,1": @"iPod Touch 4G",
                           @"iPod5,1": @"iPod Touch 5G",
                           
                           @"i386": @"iPhone Simulator 32bit",
                           @"x86_64": @"iPhone Simulator 64bit",
                           };
    });
    return _machineModels;
}

@end

给文字添加删除线

在原有的属性字典里添加 NSBaselineOffsetAttributeName (基线偏移值:取值为NSNumber （float），正值上偏，负值下偏)就可以了 。
iOS10.3之前的写法是：

NSAttributedString *attributedString = [[NSAttributedString alloc]
                                        initWithString:goodsprice attributes:@{
                                        NSStrikethroughStyleAttributeName :@(NSUnderlineStyleSingle),
                                        NSStrikethroughColorAttributeName : UIColorFromHexValue(0xBBBBBB)
                                        }];
seckillLabel.attributedText = attributedString;

iOS10.3之后的写法是：

NSAttributedString *attributedString = [[NSAttributedString alloc]
                                       initWithString:goodsprice attributes:@{
                                             NSStrikethroughStyleAttributeName : @(NSUnderlineStyleSingle),
                                             NSStrikethroughColorAttributeName : UIColorFromHexValue(0xBBBBBB),
                                             NSBaselineOffsetAttributeName:@(0)}];//NSBaselineOffsetAttributeName 设置基线偏移值。取值为NSNumber （float），正值上偏，负值下偏
cell.seckillLabel.attributedText = attributedString;

效果图