标签：account div emc man attr eric manage ecc test
获取到UUID，然后把UUID保存到KeyChain里面。
这样以后即使卸载APP，也可以从KeyChain中读取回来。
但是刷机或重装系统后uuid还是会改变。
代码采用CFUUID+KeyChain的实现方式：
1.创建KeyChain管理类
@implementation ZZKeyChainManager + (NSMutableDictionary *)getKeychainQuery:(NSString *)service { return [NSMutableDictionary dictionaryWithObjectsAndKeys: (__bridge_transfer id)kSecClassGenericPassword,(__bridge_transfer id)kSecClass, service, (__bridge_transfer id)kSecAttrService, service, (__bridge_transfer id)kSecAttrAccount, (__bridge_transfer id)kSecAttrAccessibleAfterFirstUnlock,(__bridge_transfer 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((__bridge_retained CFDictionaryRef)keychainQuery); //Add new object to search dictionary(Attention:the data format) [keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data] forKey:(__bridge_transfer id)kSecValueData]; //Add item to keychain with the search dictionary SecItemAdd((__bridge_retained CFDictionaryRef)keychainQuery, NULL); } + (id)load:(NSString *)service { id ret = nil; NSMutableDictionary *keychainQuery = [self getKeychainQuery:service]; //Configure the search setting [keychainQuery setObject:(id)kCFBooleanTrue forKey:(__bridge_transfer id)kSecReturnData]; [keychainQuery setObject:(__bridge_transfer id)kSecMatchLimitOne forKey:(__bridge_transfer id)kSecMatchLimit]; CFDataRef keyData = NULL; if (SecItemCopyMatching((__bridge_retained CFDictionaryRef)keychainQuery, (CFTypeRef *)&keyData) == noErr) { @try { ret = [NSKeyedUnarchiver unarchiveObjectWithData:(__bridge_transfer NSData *)keyData]; } @catch (NSException *e) { NSLog(@"Unarchive of %@ failed: %@", service, e); } @finally { } } return ret; } + (void)deleteUUID:(NSString *)service { NSMutableDictionary *keychainQuery = [self getKeychainQuery:service]; SecItemDelete((__bridge_retained CFDictionaryRef)keychainQuery); } @end
2.创建UUID管理类
#import "ZZUUIDManager.h"
@implementation ZZUUIDManager
static NSString * const KEY_IN_KEYCHAIN = @"com.zzuuid.uuid";
+(void)saveUUID:(NSString *)uuid{
if (uuid && uuid.length > 0) {
[ZZKeyChainManager save:KEY_IN_KEYCHAIN data:uuid];
}
}
+(NSString *)getUUID{
NSString *getUDIDInKeychain = (NSString *)[ZZKeyChainManager load:KEY_IN_KEYCHAIN];
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);
getUDIDInKeychain = result;
[ZZKeyChainManager save:KEY_IN_KEYCHAIN data:result];
getUDIDInKeychain = (NSString *)[ZZKeyChainManager load:KEY_IN_KEYCHAIN];
}
return getUDIDInKeychain;
}
+(void)deleteUUID{
[ZZKeyChainManager deleteUUID:KEY_IN_KEYCHAIN];
}
3.导入#import "ZZUUIDManager.h"
直接获取
NSLog(@"---->>uuid:%@",[ZZUUIDManager getUUID]);
参考：iOS获取UUID
标签：account div emc man attr eric manage ecc test
原文地址：https://www.cnblogs.com/iness/p/8953687.html
