objective-c - identifierForVendor および iOS6

Question

identifierForVendoriOS6が必要なので、私のアプリが現在iOS4をサポートしている場合、更新は常にアプリの以前の分を満たす必要があるため、使用できません。要件？

Answer 1

これを使用できます：

NSString *udid;

if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"6.0"))
    udid = [UIDevice currentDevice].identifierForVendor.UUIDString;
else
    udid = [UIDevice currentDevice].uniqueIdentifier;

プリプロセッサコードを使用:

#define SYSTEM_VERSION_EQUAL_TO(v)                  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
#define SYSTEM_VERSION_GREATER_THAN(v)              ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN(v)                 ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v)     ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)

Answer 2

これにはプリプロセッサ マクロは必要ありません。次のように応答するかどうかを確認する必要があります。

if ([[UIDevice currentDevice]respondsToSelector:@selector(identifierForVendor)]) {
    return [UIDevice currentDevice].identifierForVendor.UUIDString;
}else{
    // return [UIDevice currentDevice]. uniqueIdentifier
    return [[UIDevice currentDevice] performSelector:@selector(uniqueIdentifier)];
}

Answer 3

いつも違います。UUID にはタイムスタンプが含まれているため、この関数を呼び出すたびに、異なる (ランダムな) タイムスタンプが取得されます。IDManager私はクラスでこのアプローチに従いました。これはさまざまなソリューションからのコレクションです。KeyChainUtil は、キーチェーンから読み取るラッパーです。同様のキーチェーン ユーティリティがgithubにあります。

//  IDManager.m


/*
 A replacement for deprecated uniqueIdentifier API. Apple restrict using this from 1st May, 2013.

 We have to consider,
    * iOS <6 have not the ASIIdentifer API
    * When the user upgrade from iOS < 6 to >6
        - Check if there is a UUID already stored in keychain. Then use that. 
            - In that case, this UUID is constant for whole device lifetime. Keychain item is not deleted with application deletion.
 */

#import "IDManager.h"
#import "KeychainUtils.h"
#import "CommonUtil.h"

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 60000
    #import <AdSupport/AdSupport.h>
#endif

#include <sys/socket.h> 
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_dl.h>



/*  Apple confirmed this bug in their system in response to a Technical Support Incident request. They said that identifierForVendor and advertisingIdentifier sometimes returning all zeros can be seen both in development builds and apps downloaded over the air from the App Store. They have no work around and can't say when the problem will be fixed. */
#define kBuggyASIID             @"00000000-0000-0000-0000-000000000000"


#pragma mark 


#pragma mark 

@implementation IDManager

+ (NSString *) getUniqueID {

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 60000

    if (NSClassFromString(@"ASIdentifierManager")) {
        NSString * asiID = [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];
        if ([asiID compare:kBuggyASIID] == NSOrderedSame) {
            NSLog(@"Error: This device return buggy advertisingIdentifier.");
            return [IDManager getUniqueUUID];
        } else {
            return asiID;
        }

    } else {

#endif

        return [IDManager getUniqueUUID];

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 60000
    }
#endif

}

+ (NSString *) getUniqueUUID 
{
    NSError * error;
    NSString * uuid = [KeychainUtils getPasswordForUsername:@"UserName" andServiceName:@"YourServiceName" error:&error];
    if (error) {
        NSLog(@"Error geting unique UUID for this device! %@", [error localizedDescription]);
        return nil;
    }
    if (!uuid) {
        DLog(@"No UUID found. Creating a new one.");
        uuid = [IDManager getUUID];
        uuid = [CommonUtil md5String:uuid]; // create md5 hash for security reason
        [KeychainUtils storeUsername:@"UserName" andPassword:uuid forServiceName:@"YourServiceName" updateExisting:YES error:&error];
        if (error) {
            NSLog(@"Error geting unique UUID for this device! %@", [error localizedDescription]);
            return nil;
        }
    }
    return uuid;
}

+ (NSString *) readUUIDFromKeyChain {
    NSError * error;
    NSString * uuid = [KeychainUtils getPasswordForUsername:@"UserName" andServiceName:@"YourServiceName" error:&error];
    if (error) {
        NSLog(@"Error geting unique UUID for this device! %@", [error localizedDescription]);
        return nil;
    }
    return uuid;
}

/* NSUUID is after iOS 6. So we are using CFUUID for compatibility with iOS 4.3 */
+ (NSString *)getUUID
{
    CFUUIDRef theUUID = CFUUIDCreate(NULL);
    CFStringRef string = CFUUIDCreateString(NULL, theUUID);
    CFRelease(theUUID);
    return [(NSString *)string autorelease];
}

#pragma mark - MAC address

/* THIS WILL NOT WORK IN iOS 7. IT WILL RETURN A CONSTANT MAC ADDRESS ALL THE TIME.
 SEE - https://developer.apple.com/news/?id=8222013a
 */

// Return the local MAC address
// Courtesy of FreeBSD hackers email list
// Last fallback for unique identifier
+ (NSString *) getMACAddress
{
    int                 mib[6];
    size_t              len;
    char                *buf;
    unsigned char       *ptr;
    struct if_msghdr    *ifm;
    struct sockaddr_dl  *sdl;

    mib[0] = CTL_NET;
    mib[1] = AF_ROUTE;
    mib[2] = 0;
    mib[3] = AF_LINK;
    mib[4] = NET_RT_IFLIST;

    if ((mib[5] = if_nametoindex("en0")) == 0) {
        printf("Error: if_nametoindex error\n");
        return NULL;
    }

    if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
        printf("Error: sysctl, take 1\n");
        return NULL;
    }

    if ((buf = malloc(len)) == NULL) {
        printf("Error: Memory allocation error\n");
        return NULL;
    }

    if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
        printf("Error: sysctl, take 2\n");
        free(buf); // Thanks, Remy "Psy" Demerest
        return NULL;
    }

    ifm = (struct if_msghdr *)buf;
    sdl = (struct sockaddr_dl *)(ifm + 1);
    ptr = (unsigned char *)LLADDR(sdl);
    NSString *outstring = [NSString stringWithFormat:@"%02X:%02X:%02X:%02X:%02X:%02X",
                           *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];

    free(buf);
    return outstring;
}

+ (NSString *) getHashedMACAddress
{
    NSString * mac = [IDManager getMACAddress];
    return [CommonUtil md5String:mac];
}

@end

Answer 4

次のコードを使用できます

if (NSClassFromString(@"ASIdentifierManager")) {
    return [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];           
} else {
    // return other identifier generated with OpenUDID or some custom method
}

ここでOpenUDID ドキュメントを入手できます

Answer 5

NSSelectorFromStringと[NSObjectperformSelector：SEL]を見てください。NSSelectorFromStringを使用すると、文字列を使用して実行時にセレクターを選択できます。実行時のOSバージョンチェックと組み合わせて使用​​してください。