查看iPhone中存储在钥匙串中的凭据

Question

我已在我的应用中的Keychain中保存了登录凭据。我需要知道，我可以看到或访问Keychain，就像在Mac中存储凭据一样。

我遵循了tutorial

    /*write in keychain*/

  KeychainItemWrapper *keychain=[[KeychainItemWrapper alloc]initWithIdentifier:@"Login Credentials" accessGroup:nil];
  [keychain setObject:self.txtusername.text forKey:(__bridge id)kSecAttrAccount];
  [keychain setObject:self.txtpassword.text forKey:(__bridge id)kSecValueData];


  /*read from keychain*/
  NSString *stuname=[keychain objectForKey:(__bridge id)kSecAttrAccount];
  stuname=[stuname stringByAppendingString:@"   "];
  stuname=[stuname stringByAppendingString:[keychain objectForKey:(__bridge id)kSecValueData]];