iOS获取系统信息，设备的型号

获取网络状态

//通过状态栏获取当前网络类型(隐藏状态栏就不可用)
//type数字对应的网络状态依次是 ： 0 - 无网络 ; 1 - 2G ; 2 - 3G ; 3 - 4G ; 5 - WIFI
+ (NSString *)getCurrentNetworkType{
    
    UIApplication *app = [UIApplication sharedApplication];
    
    NSArray *children = [[[app valueForKeyPath:@"statusBar"] valueForKeyPath:@"foregroundView"] subviews];
    
    int type = 0;
    for (id child in children)
    {
        if ([child isKindOfClass:NSClassFromString(@"UIStatusBarDataNetworkItemView")]) {
            type = [[child valueForKeyPath:@"dataNetworkType"] intValue];
            break;
        }
    }
    
    if (type == 1) return @"2G";
    if (type == 2) return @"3G";
    if (type == 3) return @"4G";
    if (type == 5) return @"WiFi";
    return @"无网络";
}

获取 App 版本

// 获取 App 版本
+ (NSString *)getAppVersion {
    
    return [NSBundle mainBundle].infoDictionary[Version_KEY];
}

获取ios的版本

// 获取ios版本
+ (NSString *)getIOSVersion {
    
//转成float类型[[[UIDevice currentDevice] systemVersion] floatValue]
    return [[UIDevice currentDevice] systemVersion];
}

判断是否是iPad

// 判断是否iPad
+ (BOOL)isiPad {
    
    struct utsname systemInfo;
    
    uname(&systemInfo);
    
    NSString *platform = [NSString stringWithCString:systemInfo.machine encoding:NSASCIIStringEncoding];
    
    if([platform rangeOfString:@"iPad"].location != NSNotFound){
        return YES;
    }else {
        return NO;
    }
    
}

获取设备的型号

// 获取当前手机型号
+ (NSString *)iphoneType {
    //需要导入头文件#import <sys/utsname.h>
    struct utsname systemInfo;
    
    uname(&systemInfo);
    
    NSString *platform = [NSString stringWithCString:systemInfo.machine encoding:NSASCIIStringEncoding];
    
    if ([platform isEqualToString:@"iPhone1,1"]) return @"iPhone 2G";
    
    if ([platform isEqualToString:@"iPhone1,2"]) return @"iPhone 3G";
    
    if ([platform isEqualToString:@"iPhone2,1"]) return @"iPhone 3GS";
    
    if ([platform isEqualToString:@"iPhone3,1"]) return @"iPhone 4";
    
    if ([platform isEqualToString:@"iPhone3,2"]) return @"iPhone 4";
    
    if ([platform isEqualToString:@"iPhone3,3"]) return @"iPhone 4";
    
    if ([platform isEqualToString:@"iPhone4,1"]) return @"iPhone 4S";
    
    if ([platform isEqualToString:@"iPhone5,1"]) return @"iPhone 5";
    
    if ([platform isEqualToString:@"iPhone5,2"]) return @"iPhone 5";
    
    if ([platform isEqualToString:@"iPhone5,3"]) return @"iPhone 5c";
    
    if ([platform isEqualToString:@"iPhone5,4"]) return @"iPhone 5c";
    
    if ([platform isEqualToString:@"iPhone6,1"]) return @"iPhone 5s";
    
    if ([platform isEqualToString:@"iPhone6,2"]) return @"iPhone 5s";
    
    if ([platform isEqualToString:@"iPhone7,1"]) return @"iPhone 6 Plus";
    
    if ([platform isEqualToString:@"iPhone7,2"]) return @"iPhone 6";
    
    if ([platform isEqualToString:@"iPhone8,1"]) return @"iPhone 6s";
    
    if ([platform isEqualToString:@"iPhone8,2"]) return @"iPhone 6s Plus";
    
    if ([platform isEqualToString:@"iPhone8,4"]) return @"iPhone SE";
    
    if ([platform isEqualToString:@"iPhone9,1"]) return @"iPhone 7";
    
    if ([platform isEqualToString:@"iPhone9,2"]) return @"iPhone 7 Plus";
    
    if ([platform isEqualToString:@"iPod1,1"])  return @"iPod Touch 1G";
    
    if ([platform isEqualToString:@"iPod2,1"]) return @"iPod Touch 2G";
    
    if ([platform isEqualToString:@"iPod3,1"]) return @"iPod Touch 3G";
    
    if ([platform isEqualToString:@"iPod4,1"]) return @"iPod Touch 4G";
    
    if ([platform isEqualToString:@"iPod5,1"]) return @"iPod Touch 5G";
    
    if ([platform isEqualToString:@"iPod7,1"]) return @"iPod Touch 6G";
    
    if ([platform isEqualToString:@"iPad1,1"]) return @"iPad 1G";
    
    if ([platform isEqualToString:@"iPad2,1"]) return @"iPad 2";
    
    if ([platform isEqualToString:@"iPad2,2"]) return @"iPad 2";
    
    if ([platform isEqualToString:@"iPad2,3"]) return @"iPad 2";
    
    if ([platform isEqualToString:@"iPad2,4"]) return @"iPad 2";
    
    if ([platform isEqualToString:@"iPad2,5"]) return @"iPad Mini 1G";
    
    if ([platform isEqualToString:@"iPad2,6"]) return @"iPad Mini 1G";
    
    if ([platform isEqualToString:@"iPad2,7"]) return @"iPad Mini 1G";
    
    if ([platform isEqualToString:@"iPad3,1"]) return @"iPad 3";
    
    if ([platform isEqualToString:@"iPad3,2"]) return @"iPad 3";
    
    if ([platform isEqualToString:@"iPad3,3"]) return @"iPad 3";
    
    if ([platform isEqualToString:@"iPad3,4"]) return @"iPad 4";
    
    if ([platform isEqualToString:@"iPad3,5"]) return @"iPad 4";
    
    if ([platform isEqualToString:@"iPad3,6"]) return @"iPad 4";
    
    if ([platform isEqualToString:@"iPad4,1"]) return @"iPad Air";
    
    if ([platform isEqualToString:@"iPad4,2"]) return @"iPad Air";
    
    if ([platform isEqualToString:@"iPad4,3"]) return @"iPad Air";
    
    if ([platform isEqualToString:@"iPad4,4"]) return @"iPad Mini 2G";
    
    if ([platform isEqualToString:@"iPad4,5"]) return @"iPad Mini 2G";
    
    if ([platform isEqualToString:@"iPad4,6"]) return @"iPad Mini 2G";
    
    if ([platform isEqualToString:@"i386"])    return @"iPhone Simulator";
    
    if ([platform isEqualToString:@"x86_64"])  return @"iPhone Simulator";
    
    return @"识别不出设备";
    
}