[英]Can I use Realm for all data storage, or should I use NSUserDefaults for storing username/password?
我有一個用戶名/密碼登錄的應用程序。 登錄后,用戶應保持登錄狀態,直到他們退出為止,即即使用戶沒有連接,用戶仍會保持登錄狀態。
目前我正在驗證用戶,但我無法讓他們登錄。我應該將用戶詳細信息存儲在NSUserDefaults中以便在啟動時登錄,還是有辦法讓用戶只使用Realm登錄?
提前致謝!
SyncUser.logIn(with: userCredentials, server: (url! as URL)) { user, error in
guard user != nil else {
// Handles error
}
DispatchQueue.main.async {
let configuration = Realm.Configuration(
syncConfiguration: SyncConfiguration(user: user!, realmURL: URL(string: "realm://127.0.0.1:9080/~/realmtasks")!)
)
Realm.Configuration.defaultConfiguration = configuration
self.performSegue(withIdentifier: "logInSegue", sender: self)
}
}
更新:也許我的問題的答案是Apple Keychain?
您不應該在NSUserDefault
存儲密碼或任何敏感信息,通過使用簡單的文件管理器,您可以讀取存儲在其中的所有數據,這實際上是不安全的。
你甚至不需要數據庫或者那種。 存儲敏感信息的正確位置是您設備的鑰匙串。
github上有很多lib可以幫助你使用它。
請注意,即使在刪除應用程序后,您在鑰匙串中保存的內容也會保留。
您可以考慮將其保存在鑰匙串中。 只需要創建一個Objective-c文件並將其導入項目的Bridging-header文件中。
。H
#import <Foundation/Foundation.h>
@interface KeychainUserPass : NSObject
+ (void)save:(NSString *)service data:(id)data;
+ (id)load:(NSString *)service;
+ (void)delete:(NSString *)service;
@end
.M
#import "KeychainUserPass.h"
@implementation KeychainUserPass
+ (NSMutableDictionary *)getKeychainQuery:(NSString *)service {
return [NSMutableDictionary dictionaryWithObjectsAndKeys:
(__bridge id)kSecClassGenericPassword, (__bridge id)kSecClass,
service, (__bridge id)kSecAttrService,
service, (__bridge id)kSecAttrAccount,
(__bridge id)kSecAttrAccessibleAfterFirstUnlock, (__bridge id)kSecAttrAccessible,
nil];
}
+ (void)save:(NSString *)service data:(id)data {
NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
SecItemDelete((__bridge CFDictionaryRef)keychainQuery);
[keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data] forKey:(__bridge id)kSecValueData];
SecItemAdd((__bridge CFDictionaryRef)keychainQuery, NULL);
}
+ (id)load:(NSString *)service {
id ret = nil;
NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
[keychainQuery setObject:(id)kCFBooleanTrue forKey:(__bridge id)kSecReturnData];
[keychainQuery setObject:(__bridge id)kSecMatchLimitOne forKey:(__bridge id)kSecMatchLimit];
CFDataRef keyData = NULL;
if (SecItemCopyMatching((__bridge CFDictionaryRef)keychainQuery, (CFTypeRef *)&keyData) == noErr) {
@try {
ret = [NSKeyedUnarchiver unarchiveObjectWithData:(__bridge 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((__bridge CFDictionaryRef)keychainQuery);
}
@end
用法 :
保存: KeychainUserPass.save("email", data: self.YOUR_TEXT_FIELD.text!)
加載: YOUR_STRING = KeychainUserPass.load("email") as? String
YOUR_STRING = KeychainUserPass.load("email") as? String
刪除: KeychainUserPass.delete("email")
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.