Question

If I add this conditioning compiling flag in my header file, which is a owner of a xib file, the xib file cannot read the IBOutlet and show as missing. And gives warnings.

In runtime it works fine. Did anybody experience the same problem?

/* MFMessageComposeViewControllerDelegate is available in iOS 4.0 and later. */



#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 40000

   @interface SendMoneyResponseVC : UITableViewController 
    <UINavigationControllerDelegate, MFMessageComposeViewControllerDelegate,    
    MFMailComposeViewControllerDelegate, UIActionSheetDelegate> 

   #else

   @interface SendMoneyResponseVC : UITableViewController 
    <UINavigationControllerDelegate, 
    MFMailComposeViewControllerDelegate, UIActionSheetDelegate> 

    #endif 

{
    IBOutlet UITableView *sendMoneyTableVC;

    IBOutlet UITableViewCell *refNumRemittanceCell;
    IBOutlet UILabel *refNumLabel, *refNumValueLabel, *refNumInfoLabel;

    IBOutlet UITableViewCell *refNumDomesticCell;
    IBOutlet UILabel *domesticInfoLabel, *feeAndReferenceLabel;

    IBOutlet UITableViewCell *shareRefNumCell;
    IBOutlet UIButton *shareRefNumButton;

    NSString *referenceNumber, *recipient, *currency, *mtoName;
    float amount, fee;
    int sendMoneyType;

    UIAlertView *smsAlertView;
}

@property (nonatomic, retain) UITableView *sendMoneyTableVC;

@property (nonatomic, retain) UITableViewCell *refNumRemittanceCell;
@property (nonatomic, retain) UILabel *refNumLabel, *refNumValueLabel, *refNumInfoLabel;

@property (nonatomic, retain) UITableViewCell *refNumDomesticCell;
@property (nonatomic, retain) UILabel *domesticInfoLabel, *feeAndReferenceLabel;

@property (nonatomic, retain) UITableViewCell *shareRefNumCell;
@property (nonatomic, retain) UIButton *shareRefNumButton;

@property (nonatomic, retain) NSString *referenceNumber, *recipient, *currency, *mtoName;
@property float amount, fee;
@property int sendMoneyType;

- (IBAction) didPressShareButton;

@end

Answer 1

what is the reason for doing this? Unless you want to compile with an outdated SDK you should get rid of this.

Interface Builder doesn’t preprocess your files, so it will see two @interfaces and one @end.
And interface builder can’t parse something like this.