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    <p>ARC ready code:</p> <p>KeychainUserPass.h</p> <pre><code>#import &lt;Foundation/Foundation.h&gt; @interface KeychainUserPass : NSObject + (void)save:(NSString *)service data:(id)data; + (id)load:(NSString *)service; + (void)delete:(NSString *)service; @end </code></pre> <p>KeychainUserPass.m</p> <pre><code>#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 *)&amp;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 </code></pre>
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    1. POSaving Email/Password to Keychain in iOS
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    1. USVlad Spreys
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      1. VTUpMod
    1. COThank you for the ARC ready version. It works like a charm.
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      1. USGreg Wang
    2. CONot a problem :)
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      1. USVlad Spreys
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

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