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我正在构建应用程序，其中人们需要能够从iOS照片应用程序共享照片。要做到这一点，人们需要登录到应用程序。iOS KeyChain项目未在应用程序的多个目标之间更新
所以我创建了一个新的iOS目标共享。 现在我正在使用KeychainItemWrapper来存储用户凭证。 因此，主要目标和共享表目标都使用iOS Keychain来检索登录信息。
现在，当我从主应用程序注销，然后以其他用户身份登录后，我开始分享表单，看起来分享表仍然包含上一位用户的旧数据。
这怎么可能？我如何确保两个目标始终使用钥匙串中最新最好的数据？
#import "KeychainManager.h"
#import "KeychainItemWrapper.h"
NSString * const CREDENTIALS_IDENTIFIER = @"credentials";
NSString * const COOKIES_IDENTIFIER = @"cookies";
static KeychainManager *keychainManager;
@implementation KeychainManager
+ (instancetype)sharedCredentailsManager {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
keychainManager = [[KeychainManager alloc] init];
});
return keychainManager;
}
#pragma mark - Getter
- (KeychainItemWrapper *)credentialsKeychainItem {
return [[KeychainItemWrapper alloc] initWithIdentifier:CREDENTIALS_IDENTIFIER accessGroup:nil];
}
- (KeychainItemWrapper *)cookiesKeychainItem {
return [[KeychainItemWrapper alloc] initWithIdentifier:COOKIES_IDENTIFIER accessGroup:nil];
}
- (NSString *)domainName {
NSString *domainName = [self.credentialsKeychainItem objectForKey:(__bridge id)(kSecAttrService)];
return (domainName.length > 0) ? domainName : @"";
}
- (NSString *)userName {
NSString *userName = [self.credentialsKeychainItem objectForKey:(__bridge id)(kSecAttrAccount)];
return (userName.length > 0) ? userName : @"";
}
- (NSString *)password {
NSData *password = [self.credentialsKeychainItem objectForKey:(__bridge id)(kSecValueData)];
if ([password isKindOfClass:[NSString class]] && password.length > 0) {
return (NSString *)password;
} else if ([password isKindOfClass:[NSData class]] && password.length > 0) {
NSString *passwordString = [[NSString alloc] initWithData:password encoding:NSUTF8StringEncoding];
return (passwordString.length > 0) ? password : @"";
} else {
return @"";
}
}
- (NSArray *)cookies {
NSLog(@"Getting cookies");
NSData *cookieData = [self.cookiesKeychainItem objectForKey:(__bridge id)(kSecAttrAccount)];
if ([cookieData isKindOfClass:[NSData class]] && cookieData.length > 0) {
NSArray *array = [NSKeyedUnarchiver unarchiveObjectWithData:cookieData];
NSLog(@"%lu cookies in keychain", (unsigned long)array.count);
return array;
} else {
NSLog(@"No cookies found in KeyChain");
return nil;
}
}
#pragma mark - Setter
- (void)setDomainName:(NSString *)domainName {
[self.credentialsKeychainItem setObject:domainName forKey:(__bridge id)(kSecAttrService)];
}
- (void)setUserName:(NSString *)userName {
[self.credentialsKeychainItem setObject:userName forKey:(__bridge id)(kSecAttrAccount)];
}
- (void)setPassword:(NSString *)password {
[self.credentialsKeychainItem setObject:password forKey:(__bridge id)(kSecValueData)];
}
- (void)setCookies:(NSArray *)cookies {
NSMutableArray *mutableCookies = [[NSMutableArray alloc] init];
for (NSHTTPCookie *cookie in cookies) {
NSLog(@"storing cookie: %@", cookie);
NSDictionary *cookieProperties = cookie.properties;
[mutableCookies addObject:cookieProperties];
}
NSArray *unmutableCookies = [mutableCookies copy];
NSData * encodedData = [NSKeyedArchiver archivedDataWithRootObject:unmutableCookies];
[self.cookiesKeychainItem setObject:encodedData forKey:(__bridge id)(kSecAttrAccount)];
}
# pragma mark - Clear data
- (void)clearAll {
[self clearCredentials];
[self clearCookies];
}
- (void)clearCredentials {
[self.credentialsKeychainItem resetKeychainItem];
}
- (void)clearCookies {
[self.cookiesKeychainItem resetKeychainItem];
}
@end
所以症状的函数来获取用户名，密码，域或饼干都给同一应用程序的不同目标之间不同的结果。