iOS开发之获取设备各种信息

目录结构

• 1、获取屏幕宽高
• 2、获取设备版本号
• 3、获取 iPhone 名称
• 4、获取 app 版本号
• 5、获取电池电量
• 6、获取当前系统名称
• 7、获取当前系统版本号
• 8、获取通用的唯一识别码UUID
• 9、获取当前设备IP
• 10、获取总内存大小
• 11、获取当前可用内存
• 12、获取精准电池电量
• 13、获取电池当前的状态（共有4种状态）
• 14、获取设备当前的语言

具体内容

1、获取屏幕宽高

/// 屏幕宽度
+ (CGFloat)getDeviceScreenWidth {
    return [UIScreen mainScreen].bounds.size.width;
}
/// 屏幕高度
+ (CGFloat)getDeviceScreenHeight {
    return [UIScreen mainScreen].bounds.size.height;
}
/// [UIScreen mainScreen].bounds.size.width用的很普遍，一般来说定义成宏更好，然后根据屏幕宽高进行尺寸的适配。

2、获取设备版本号

+ (NSString *)getDeviceName {
    // 需要#import "sys/utsname.h"
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    if ([deviceString isEqualToString:@"iPhone3,1"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone3,2"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone3,3"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone4,1"])    return @"iPhone 4S";
    if ([deviceString isEqualToString:@"iPhone5,1"])    return @"iPhone 5";
    if ([deviceString isEqualToString:@"iPhone5,2"])    return @"iPhone 5 (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPhone5,3"])    return @"iPhone 5c (GSM)";
    if ([deviceString isEqualToString:@"iPhone5,4"])    return @"iPhone 5c (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPhone6,1"])    return @"iPhone 5s (GSM)";
    if ([deviceString isEqualToString:@"iPhone6,2"])    return @"iPhone 5s (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPhone7,1"])    return @"iPhone 6 Plus";
    if ([deviceString isEqualToString:@"iPhone7,2"])    return @"iPhone 6";
    if ([deviceString isEqualToString:@"iPhone8,1"])    return @"iPhone 6s";
    if ([deviceString isEqualToString:@"iPhone8,2"])    return @"iPhone 6s Plus";
    if ([deviceString isEqualToString:@"iPhone8,4"])    return @"iPhone SE";
    if ([deviceString isEqualToString:@"iPod1,1"])      return @"iPod Touch 1G";
    if ([deviceString isEqualToString:@"iPod2,1"])      return @"iPod Touch 2G";
    if ([deviceString isEqualToString:@"iPod3,1"])      return @"iPod Touch 3G";
    if ([deviceString isEqualToString:@"iPod4,1"])      return @"iPod Touch 4G";
    if ([deviceString isEqualToString:@"iPod5,1"])      return @"iPod Touch (5 Gen)";
    if ([deviceString isEqualToString:@"iPad1,1"])      return @"iPad";
    if ([deviceString isEqualToString:@"iPad1,2"])      return @"iPad 3G";
    if ([deviceString isEqualToString:@"iPad2,1"])      return @"iPad 2 (WiFi)";
    if ([deviceString isEqualToString:@"iPad2,2"])      return @"iPad 2";
    if ([deviceString isEqualToString:@"iPad2,3"])      return @"iPad 2 (CDMA)";
    if ([deviceString isEqualToString:@"iPad2,4"])      return @"iPad 2";
    if ([deviceString isEqualToString:@"iPad2,5"])      return @"iPad Mini (WiFi)";
    if ([deviceString isEqualToString:@"iPad2,6"])      return @"iPad Mini";
    if ([deviceString isEqualToString:@"iPad2,7"])      return @"iPad Mini (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPad3,1"])      return @"iPad 3 (WiFi)";
    if ([deviceString isEqualToString:@"iPad3,2"])      return @"iPad 3 (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPad3,3"])      return @"iPad 3";
    if ([deviceString isEqualToString:@"iPad3,4"])      return @"iPad 4 (WiFi)";
    if ([deviceString isEqualToString:@"iPad3,5"])      return @"iPad 4";
    if ([deviceString isEqualToString:@"iPad3,6"])      return @"iPad 4 (GSM+CDMA)";
    if ([deviceString isEqualToString:@"iPad4,1"])      return @"iPad Air (WiFi)";
    if ([deviceString isEqualToString:@"iPad4,2"])      return @"iPad Air (Cellular)";
    if ([deviceString isEqualToString:@"iPad4,4"])      return @"iPad Mini 2 (WiFi)";
    if ([deviceString isEqualToString:@"iPad4,5"])      return @"iPad Mini 2 (Cellular)";
    if ([deviceString isEqualToString:@"iPad4,6"])      return @"iPad Mini 2";
    if ([deviceString isEqualToString:@"iPad4,7"])      return @"iPad Mini 3";
    if ([deviceString isEqualToString:@"iPad4,8"])      return @"iPad Mini 3";
    if ([deviceString isEqualToString:@"iPad4,9"])      return @"iPad Mini 3";
    if ([deviceString isEqualToString:@"iPad5,1"])      return @"iPad Mini 4 (WiFi)";
    if ([deviceString isEqualToString:@"iPad5,2"])      return @"iPad Mini 4 (LTE)";
    if ([deviceString isEqualToString:@"iPad5,3"])      return @"iPad Air 2";
    if ([deviceString isEqualToString:@"iPad5,4"])      return @"iPad Air 2";
    if ([deviceString isEqualToString:@"iPad6,3"])      return @"iPad Pro 9.7";
    if ([deviceString isEqualToString:@"iPad6,4"])      return @"iPad Pro 9.7";
    if ([deviceString isEqualToString:@"iPad6,7"])      return @"iPad Pro 12.9";
    if ([deviceString isEqualToString:@"iPad6,8"])      return @"iPad Pro 12.9";
    if ([deviceString isEqualToString:@"i386"])         return @"Simulator";
    if ([deviceString isEqualToString:@"x86_64"])       return @"Simulator";
    return deviceString;
}

3、获取 iPhone 名称

/// 获取iPhone名称
+ (NSString *)getiPhoneName {
	return [UIDevice currentDevice].name;
}

4、获取 app 版本号

/// 获取app版本号
+ (NSString *)getAPPVerion {
    return [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];
}

5、获取电池电量

/// 获取电池电量
+ (CGFloat)getBatteryLevel {
    return [UIDevice currentDevice].batteryLevel;
}

6、获取当前系统名称

/// 当前系统名称
+ (NSString *)getSystemName {
    return [UIDevice currentDevice].systemName;
}

7、获取当前系统版本号

/// 当前系统版本号
+ (NSString *)getSystemVersion {
    return [UIDevice currentDevice].systemVersion;
}

8、获取通用的唯一识别码UUID

/// 通用唯一识别码UUID
+ (NSString *)getUUID {
    return [[UIDevice currentDevice] identifierForVendor].UUIDString;
}

9、获取当前设备IP

// 获取当前设备IP
+ (NSString *)getDeviceIPAdress {
    NSString *address = @"an error occurred when obtaining ip address";
    struct ifaddrs *interfaces = NULL;
    struct ifaddrs *temp_addr = NULL;
    int success = 0;
    success = getifaddrs(&interfaces);
    if (success == 0) { // 0 表示获取成功
        temp_addr = interfaces;
        while (temp_addr != NULL) {
            if( temp_addr->ifa_addr->sa_family == AF_INET) {
                // Check if interface is en0 which is the wifi connection on the iPhone
                if ([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"]) {
                    // Get NSString from C String
                    address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];
                }
            }
            temp_addr = temp_addr->ifa_next;
        }
    }
    freeifaddrs(interfaces);
    return address;
}

10、获取总内存大小

/// 获取总内存大小
+ (long long)getTotalMemorySize {
    return [NSProcessInfo processInfo].physicalMemory;
}

11、获取当前可用内存

/// 获取当前可用内存
+ (long long)getAvailableMemorySize {
    vm_statistics_data_t vmStats;
    mach_msg_type_number_t infoCount = HOST_VM_INFO_COUNT;
    kern_return_t kernReturn = host_statistics(mach_host_self(), HOST_VM_INFO, (host_info_t)&vmStats, &infoCount);
    if (kernReturn != KERN_SUCCESS)
    {
        return NSNotFound;
    }
    return ((vm_page_size * vmStats.free_count + vm_page_size * vmStats.inactive_count));
}

12、获取精准电池电量

/// 获取精准电池电量
+ (CGFloat)getCurrentBatteryLevel {
    UIApplication *app = [UIApplication sharedApplication];
    if (app.applicationState == UIApplicationStateActive||app.applicationState==UIApplicationStateInactive) {
        Ivar ivar=  class_getInstanceVariable([app class],"_statusBar");
        id status  = object_getIvar(app, ivar);
        for (id aview in [status subviews]) {
            int batteryLevel = 0;
            for (id bview in [aview subviews]) {
                if ([NSStringFromClass([bview class]) caseInsensitiveCompare:@"UIStatusBarBatteryItemView"] == NSOrderedSame&&[[[UIDevice currentDevice] systemVersion] floatValue] >=6.0) {
                    Ivar ivar=  class_getInstanceVariable([bview class],"_capacity");
                    if(ivar) {
                        batteryLevel = ((int (*)(id, Ivar))object_getIvar)(bview, ivar);
                        if (batteryLevel > 0 && batteryLevel <= 100) {
                            return batteryLevel;
                        } else {
                            return 0;
                        }
                    }
                }
            }
        }
    }
    return 0;
}

13、获取电池当前的状态（共有4种状态）

/// 获取电池当前的状态，共有4种状态
+ (NSString *) getBatteryState {
    UIDevice *device = [UIDevice currentDevice];
    if (device.batteryState == UIDeviceBatteryStateUnknown) {
        return @"UnKnow";
    } else if (device.batteryState == UIDeviceBatteryStateUnplugged){
        return @"Unplugged";
    } else if (device.batteryState == UIDeviceBatteryStateCharging){
        return @"Charging";
    } else if (device.batteryState == UIDeviceBatteryStateFull){
        return @"Full";
    }
    return nil;
}

14、获取设备当前的语言

/// 获取当前语言
+ (NSString *)getDeviceLanguage {
    NSArray *languageArray = [NSLocale preferredLanguages];
    return [languageArray objectAtIndex:0];
}