感谢大神的解惑 https://www.cnblogs.com/smileEvday/p/UDID.html
导入头文件
#import <AdSupport/AdSupport.h>
#import "KeyChainStore.h"
废话不多说，直接上代码，
+(NSString *)CkeckUUID {
// 这个key的前缀最好是你的BundleID
NSString*strUUID = (NSString*)[KeyChainStoreload:@"com.skrApp"];
//首次执行该方法时，uuid为空
if([strUUIDisEqualToString:@""]|| !strUUID)
{
// 获取UUID 这个是要引入的
strUUID = [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];
if(strUUID.length ==0 || [strUUID isEqualToString:@"00000000-0000-0000-0000-000000000000"])
{
//生成一个uuid的方法
CFUUIDRef uuidRef= CFUUIDCreate(kCFAllocatorDefault);
strUUID = (NSString*)CFBridgingRelease(CFUUIDCreateString(kCFAllocatorDefault,uuidRef));
CFRelease(uuidRef);
}
//将该uuid保存到keychain
[KeyChainStoresave:@"com.skrApp"data:strUUID];
}
returnstrUUID;
}
KeyChainStore.h 文件
#import
NS_ASSUME_NONNULL_BEGIN
@interface KeyChainStore : NSObject
+ (void)save:(NSString*)servicedata:(id)data;
+ (id)load:(NSString*)service;
+ (void)deleteKeyData:(NSString*)service;
@end
NS_ASSUME_NONNULL_END
KeyChainStore.m 文件
#import "KeyChainStore.h"
@implementation KeyChainStore
+ (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*)servicedata:(id)data{
//Get search dictionary
NSMutableDictionary*keychainQuery = [selfgetKeychainQuery:service];
//Delete old item before add new item
SecItemDelete((CFDictionaryRef)keychainQuery);
//Add new object to searchdictionary(Attention:the data format)
[keychainQuerysetObject:[NSKeyedArchiver archivedDataWithRootObject:data]forKey:(id)kSecValueData];
//Add item to keychain with the searchdictionary
SecItemAdd((CFDictionaryRef)keychainQuery,NULL);
}
+ (id)load:(NSString*)service {
idret =nil;
NSMutableDictionary*keychainQuery = [selfgetKeychainQuery:service];
//Configure the search setting
//Since in our simple case we areexpecting only a single attribute to be returned (the password) wecan set the attribute kSecReturnData to kCFBooleanTrue
[keychainQuerysetObject:(id)kCFBooleanTrue forKey:(id)kSecReturnData];
[keychainQuerysetObject:(id)kSecMatchLimitOne forKey:(id)kSecMatchLimit];
CFDataRefkeyData =NULL;
if(SecItemCopyMatching((CFDictionaryRef)keychainQuery,(CFTypeRef*)&keyData) ==noErr){
@try{
ret =[NSKeyedUnarchiver unarchiveObjectWithData:(__bridge NSData*)keyData];
}@catch(NSException *e) {
NSLog(@"Unarchiveof %@ failed: %@",service, e);
}@finally{
}
}
if(keyData)
CFRelease(keyData);
returnret;
}
+ (void)deleteKeyData:(NSString*)service {
NSMutableDictionary*keychainQuery = [selfgetKeychainQuery:service];
SecItemDelete((CFDictionaryRef)keychainQuery);
}
