iOS獲取UUID
阿新 • • 發佈:2018-01-06
其它 ros ssg exp mutable ios || mac地址 attrs
轉自:《iOS獲取設備的唯一標識的方法總結以及最好的方法》
參考:《獲取iOS設備唯一標識》
總結一下:
1.代碼采用CFUUID+KeyChain的實現方式。
2.CFUUID、IDFA、IDFV都是可變的(其它方法,比如蘋果自帶的UUID和MAC地址基本上被禁止使用),但是IDFA和IDFV不一定都能獲取到(iOS系統不同版本不一定支持),所以直接選擇了CFUUID(iOS2.0就開始支持了)。
PS:
3.代碼中使用stringByReplacingOccurrencesOfString將間隔符-去掉了(原來是這種:CAE1CC3A-92C1-45A5-9F55-932264020358,去掉後變為CAE1CC3A92C145A59F55932264020358)。
4.SdkMgr為自定義類名,根據需要自行修改。
NSString * const KEY_UDID_INSTEAD = @"com.app.uuid.test";
+(NSString *)getDeviceUUID{
NSString *getUDIDInKeychain = (NSString *)[SdkMgr load:KEY_UDID_INSTEAD];
if (!getUDIDInKeychain ||[getUDIDInKeychain isEqualToString:@""]||[getUDIDInKeychain isKindOfClass:[NSNull class ]]) {
CFUUIDRef puuid = CFUUIDCreate( nil );
CFStringRef uuidString = CFUUIDCreateString( nil, puuid );
NSString * result = (NSString *)CFBridgingRelease(CFStringCreateCopy( NULL, uuidString));
CFRelease(puuid);
CFRelease(uuidString);
//去掉橫線,保留32位長度
NSString *rst = [result stringByReplacingOccurrencesOfString:@"-" withString:@""];
[SdkMgr save:KEY_UDID_INSTEAD data:rst];
getUDIDInKeychain = (NSString *)[SdkMgr load:KEY_UDID_INSTEAD];
}
return getUDIDInKeychain;
}
#pragma mark - private
+ (NSMutableDictionary *)getKeychainQuery:(NSString *)service {
return [NSMutableDictionary dictionaryWithObjectsAndKeys:
(id)kSecClassGenericPassword,(id)kSecClass,
service, (id)kSecAttrService,
service, (id)kSecAttrAccount,
(id)kSecAttrAccessibleAfterFirstUnlock,(id)kSecAttrAccessible,
nil];
}
+ (void)save:(NSString *)service data:(id)data {
//Get search dictionary
NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
//Delete old item before add new item
SecItemDelete((CFDictionaryRef)keychainQuery);
//Add new object to search dictionary(Attention:the data format)
[keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data] forKey:(id)kSecValueData];
//Add item to keychain with the search dictionary
SecItemAdd((CFDictionaryRef)keychainQuery, NULL);
}
+ (id)load:(NSString *)service {
id ret = nil;
NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
//Configure the search setting
//Since in our simple case we are expecting only a single attribute to be returned (the password) we can set the attribute kSecReturnData to kCFBooleanTrue
[keychainQuery setObject:(id)kCFBooleanTrue forKey:(id)kSecReturnData];
[keychainQuery setObject:(id)kSecMatchLimitOne forKey:(id)kSecMatchLimit];
CFDataRef keyData = NULL;
if (SecItemCopyMatching((CFDictionaryRef)keychainQuery, (CFTypeRef *)&keyData) == noErr) {
@try {
ret = [NSKeyedUnarchiver unarchiveObjectWithData:(NSData *)keyData];
} @catch (NSException *e) {
NSLog(@"Unarchive of %@ failed: %@", service, e);
} @finally {
}
}
if (keyData)
CFRelease(keyData);
return ret;
}
+ (void)delete:(NSString *)service {
NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
SecItemDelete((CFDictionaryRef)keychainQuery);
}
@end
iOS獲取UUID