版本号和构建版本号

APP在开发的过程中，有时候为了bug的跟踪，需要收集用户使用手机的设备，手机系统版本，手机型号，以及应用版本，应用信息等等。这些的信息便于开发者诊断问题，是能够通过开发api可以获取到的，iOS的SDK中提供了三种方式来获取APP的信息,他们分别是UIDevice,NSBundle,NSLocale.

一、UIDevice 帮助我们全方位的了解所使用的设备的信息

//手机名称
NSString *userPhoneNameStr = [[UIDevice currentDevice] name];
//手机系统名称
NSString *deviceNameStr = [[UIDevice currentDevice] systemName];
//手机系统版本号
NSString *systemVersionStr = [[UIDevice currentDevice] systemVersion];
//类型 是模拟器还是真机
NSString *phoneModelStr = [[UIDevice currentDevice] model];
//电池电量
CGFloat batteryLevel = [[UIDevice currentDevice] batteryLevel];
//地方型号  （国际化区域名称）
NSString* localPhoneModel = [[UIDevice currentDevice] localizedModel];

二、NSBundle ，这是一个目录，我们称之为程序的main bundle，通过这个目录获取应用的信息，比如说应用的名称，版本号，应用软件的版本

这里总共有29个,我在这里挑选了几个比较常用的

//app 应用信息的获取字典类型，
NSDictionary * dicInfo =[[NSBundle mainBundle] infoDictionary]; 
//当前应用名称
NSString * appNameStr =[dicInfo objectForKey:@"CFBundleName"];
//当前应用版本号
NSString * appVersionStr =[dicInfo objectForKey:@"CFBundleShortVersionString"];
//当前应用构建版本号(build号)
NSString * appBuildStr =[dicInfo objectForKey:@"CFBundleVersion"];
//获取build号另一种方式
NSString *version = [[[NSBundle mainBundle]infoDictionary]objectForKey:(NSString *)kCFBundleVersionKey];
//Xcode 版本号
NSString * appXcodeStr =[dicInfo objectForKey:@"DTXcode"];
//模拟器系统版本号
NSString * appSDKNameStr = [dicInfo objectForKey:@"DTSDKName"];

三、NSLocale 可以获取用户的本地化信息的设置，比如说：国家，语言，日期的格式。

四、磁盘空间

// 获取磁盘总空间
- (int64_t)getTotalDiskSpace {
    NSError *error = nil;
    NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfFileSystemForPath:NSHomeDirectory() error:&error];
    if (error) return -1;
    int64_t space =  [[attrs objectForKey:NSFileSystemSize] longLongValue];
    if (space < 0) space = -1;
    return space;
}
// 获取未使用的磁盘空间
- (int64_t)getFreeDiskSpace {
    NSError *error = nil;
    NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfFileSystemForPath:NSHomeDirectory() error:&error];
    if (error) return -1;
    int64_t space =  [[attrs objectForKey:NSFileSystemFreeSize] longLongValue];
    if (space < 0) space = -1;
    return space;
}
// 获取已使用的磁盘空间
- (int64_t)getUsedDiskSpace {
    int64_t totalDisk = [self getTotalDiskSpace];
    int64_t freeDisk = [self getFreeDiskSpace];
    if (totalDisk < 0 || freeDisk < 0) return -1;
    int64_t usedDisk = totalDisk - freeDisk;
    if (usedDisk < 0) usedDisk = -1;
    return usedDisk;
}

五、运营商

#import <CoreTelephony/CTTelephonyNetworkInfo.h>
#import <CoreTelephony/CTCarrier.h>

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

六、获取设备型号

- (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";
    return platform;
}

七、地理位置

使用CLLocationManager和CLLocation两个类
-(void)Collocaction{

    self.locationManager = [[CLLocationManager alloc] init];

    [self.locationManager  requestAlwaysAuthorization];//请求授权
    if ([CLLocationManager locationServicesEnabled]) {
        self.locationManager.delegate = self;
        self.locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters;
        self.locationManager.distanceFilter = 200.0f;
        [self.locationManager startUpdatingLocation];
    }
    else {
        NSLog(@"请开启定位功能！");
    }
}
//定位代理方法
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation

           fromLocation:(CLLocation *)oldLocation {

    // 获取当前所在的城市名
    CLGeocoder *geocoder = [[CLGeocoder alloc] init];
    //根据经纬度反向地理编译出地址信息
    [geocoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray *array, NSError *error)
     {
         if (array.count > 0)
         {
             CLPlacemark *placemark = [array objectAtIndex:0];
             //获取城市
             NSString *city = placemark.locality;
             if (!city) {
                 //四大直辖市的城市信息无法通过locality获得，只能通过获取省份的方法来获得（如果city为空，则可知为直辖市）
                 city = placemark.administrativeArea;
             }
             //详细地址
             NSString *location = placemark.name;
             //拼接成最终的位置
             NSString *myLocation = [NSString stringWithFormat:@"%@%@",city,location];
         }
         else if (error == nil && [array count] == 0)
         {
             NSLog(@"No results were returned.");
         }
         else if (error != nil)
         {
             NSLog(@"An error occurred = %@", error);
         }
     }];

    //停止定位
    [manager stopUpdatingLocation];
}
// 定位失误时调用
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
    NSLog(@"error:%@",error);
}

八、获取设备的IP地址

//获取IP地址
#import <ifaddrs.h>
#import <arpa/inet.h>
#include <net/if.h>

#define IOS_CELLULAR    @"pdp_ip0"
#define IOS_WIFI        @"en0"
//#define IOS_VPN       @"utun0"
#define IP_ADDR_IPv4    @"ipv4"
#define IP_ADDR_IPv6    @"ipv6"



//第一种适合在WiFi情况下使用，但是如果切换到蜂窝数据下，则返回数据@“error”
//获取设备当前网络IP地址
- (NSString *)getIPAddress:(BOOL)preferIPv4{
    NSArray *searchArray = preferIPv4 ?
    @[ /*IOS_VPN @"/" IP_ADDR_IPv4, IOS_VPN @"/" IP_ADDR_IPv6,*/ IOS_WIFI @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6 ] :
    @[ /*IOS_VPN @"/" IP_ADDR_IPv6, IOS_VPN @"/" IP_ADDR_IPv4,*/ IOS_WIFI @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4 ] ;
    
    NSDictionary *addresses = [self getIPAddresses];
    NSLog(@"addresses: %@", addresses);
    
    __block NSString *address;
    [searchArray enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop)
     {
         address = addresses[key];
         if(address) *stop = YES;
     } ];
    return address ? address : @"0.0.0.0";
}


//第二种可以获取蜂窝数据下的IP地址
//获取所有相关IP信息
- (NSDictionary *)getIPAddresses{
    NSMutableDictionary *addresses = [NSMutableDictionary dictionaryWithCapacity:8];
    
    // retrieve the current interfaces - returns 0 on success
    struct ifaddrs *interfaces;
    if(!getifaddrs(&interfaces)) {
        // Loop through linked list of interfaces
        struct ifaddrs *interface;
        for(interface=interfaces; interface; interface=interface->ifa_next) {
            if(!(interface->ifa_flags & IFF_UP) /* || (interface->ifa_flags & IFF_LOOPBACK) */ ) {
                continue; // deeply nested code harder to read
            }
            const struct sockaddr_in *addr = (const struct sockaddr_in*)interface->ifa_addr;
            char addrBuf[ MAX(INET_ADDRSTRLEN, INET6_ADDRSTRLEN) ];
            if(addr && (addr->sin_family==AF_INET || addr->sin_family==AF_INET6)) {
                NSString *name = [NSString stringWithUTF8String:interface->ifa_name];
                NSString *type;
                if(addr->sin_family == AF_INET) {
                    if(inet_ntop(AF_INET, &addr->sin_addr, addrBuf, INET_ADDRSTRLEN)) {
                        type = IP_ADDR_IPv4;
                    }
                } else {
                    const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6*)interface->ifa_addr;
                    if(inet_ntop(AF_INET6, &addr6->sin6_addr, addrBuf, INET6_ADDRSTRLEN)) {
                        type = IP_ADDR_IPv6;
                    }
                }
                if(type) {
                    NSString *key = [NSString stringWithFormat:@"%@/%@", name, type];
                    addresses[key] = [NSString stringWithUTF8String:addrBuf];
                }
            }
        }
        // Free memory
        freeifaddrs(interfaces);
    }
    return [addresses count] ? addresses : nil;
}


// Get IP Address
- (NSString *)getIPAddress {
    NSString *address = @"error";
    struct ifaddrs *interfaces = NULL;
    struct ifaddrs *temp_addr = NULL;
    int success = 0;
    // retrieve the current interfaces - returns 0 on success
    success = getifaddrs(&interfaces);
    if (success == 0) {
        // Loop through linked list of interfaces
        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;
        }
    }
    // Free memory
    freeifaddrs(interfaces);
    return address;
}

九、获取设备的位置

#import <CoreLocation/CoreLocation.h>
遵守CLLocationManagerDelegate代理
在info.plist中加入：

//允许在前台使用时获取GPS的描述

定位权限：Privacy - Location When In Use Usage Description 

//允许永久使用GPS描述

定位权限: Privacy - Location Always Usage Description

在Build Phases 添加CoreLocation.framework库

{
    CLLocationManager *locationmanager;//定位服务
    NSString *currentCity;//当前城市
    NSString *strlatitude;//经度
    NSString *strlongitude;//纬度
}

//获取经纬度
    [self getLocation];
-(void)getLocation
{
    //判断定位功能是否打开
    if ([CLLocationManager locationServicesEnabled]) {
        locationmanager = [[CLLocationManager alloc]init];
        locationmanager.delegate = self;
        [locationmanager requestAlwaysAuthorization];
        currentCity = [NSString new];
        [locationmanager requestWhenInUseAuthorization];
        
        //设置寻址精度
        locationmanager.desiredAccuracy = kCLLocationAccuracyBest;
        locationmanager.distanceFilter = 5.0;
        [locationmanager startUpdatingLocation];
    }
}

#pragma mark CoreLocation delegate (定位失败)
//定位失败后调用此代理方法
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
    //设置提示提醒用户打开定位服务
    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"允许定位提示" message:@"请在设置中打开定位" preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"打开定位" style:UIAlertActionStyleDefault handler:nil];
    
    UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil];
    [alert addAction:okAction];
    [alert addAction:cancelAction];
    [self presentViewController:alert animated:YES completion:nil];
}

#pragma mark 定位成功后则执行此代理方法
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
    [locationmanager stopUpdatingHeading];
    //旧址
    CLLocation *currentLocation = [locations lastObject];
    CLGeocoder *geoCoder = [[CLGeocoder alloc]init];
    //打印当前的经度与纬度
    NSLog(@"%f,%f",currentLocation.coordinate.latitude,currentLocation.coordinate.longitude);
    
    //反地理编码
    [geoCoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
        if (placemarks.count > 0) {
            CLPlacemark *placeMark = placemarks[0];
            currentCity = placeMark.locality;
            if (!currentCity) {
                currentCity = @"无法定位当前城市";
            }
            
            /*看需求定义一个全局变量来接收赋值*/
            NSLog(@"----%@",placeMark.country);//当前国家
            NSLog(@"%@",currentCity);//当前的城市
//            NSLog(@"%@",placeMark.subLocality);//当前的位置
//            NSLog(@"%@",placeMark.thoroughfare);//当前街道
//            NSLog(@"%@",placeMark.name);//具体地址
            
        }
    }];
    
}