iOS 中常见的数据本地化有很多种,例如:
- FMDB
- Core Data
- NSUserDefaults
- SQLite
- UIPasteboard
- Keychain(这次主要介绍这种)
使用钥匙串存取数据,首先必须要获取设备钥匙串
<br >
第三方获取设备钥匙串
CocoPods导入第三方SAMKeychain库.png
存取数据
+ (BOOL)setPasswordData:(NSData *)password forService:(NSString *)serviceName account:(NSString *)account;
+ (BOOL)setPasswordData:(NSData *)password forService:(NSString *)serviceName account:(NSString *)account error:(NSError **)error __attribute__((swift_error(none)));
+ (BOOL)setPassword:(NSString *)password forService:(NSString *)serviceName account:(NSString *)account;
+ (BOOL)setPassword:(NSString *)password forService:(NSString *)serviceName account:(NSString *)account error:(NSError **)error __attribute__((swift_error(none)));
获取数据
+ (NSData *)passwordDataForService:(NSString *)serviceName account:(NSString *)account;
+ (NSData *)passwordDataForService:(NSString *)serviceName account:(NSString *)account error:(NSError **)error __attribute__((swift_error(none)));
+ (NSString *)passwordForService:(NSString *)serviceName account:(NSString *)account;
+ (NSString *)passwordForService:(NSString *)serviceName account:(NSString *)account error:(NSError **)error __attribute__((swift_error(none)));
删除数据
+ (BOOL)deletePasswordForService:(NSString *)serviceName account:(NSString *)account;
+ (BOOL)deletePasswordForService:(NSString *)serviceName account:(NSString *)account error:(NSError **)error __attribute__((swift_error(none)));
获取所有帐号信息
+ (NSArray<NSDictionary<NSString *, id> *> *)allAccounts;
+ (NSArray<NSDictionary<NSString *, id> *> *)allAccounts:(NSError *__autoreleasing *)error __attribute__((swift_error(none)));
+ (NSArray<NSDictionary<NSString *, id> *> *)accountsForService:(NSString *)serviceName;
+ (NSArray<NSDictionary<NSString *, id> *> *)accountsForService:(NSString *)serviceName error:(NSError *__autoreleasing *)error __attribute__((swift_error(none)));
可能感兴趣的人会发现这个第三方还有一个类SAMKeychainQuery
@property (nonatomic, copy) NSString *account;
@property (nonatomic, copy) NSString *service;
@property (nonatomic, copy) NSData *passwordData;
@property (nonatomic, copy) id<NSCoding> passwordObject;
@property (nonatomic, copy) NSString *password;
以上属性是用来配置筛选的信息,通过下面方法
- (NSArray<NSDictionary<NSString *, id> *> *)fetchAll:(NSError **)error;
筛选出和配置信息相符合的数据,返回的是一个
返回结果格式.png
钥匙串的访问,常配合唯一标识的获取与存取,可查看
http://www.jianshu.com/p/b4531e3d8717
