Why isn't my subview loading?

Question

I have a project with 3 .xib files, MainMenu, FileUploadView, FileBrowseView.

• MainMenu has a NSPanel, it's owner is AppDelegate, and AppDelegate has an outlet to NSPanel called FilePanel. The NSView below the NSPanel is called filePanelView and also has an outlet in AppDelegate.

• FileUploadView is an NSView, it's owner is FileUploadViewController. It has an outlet called uploadView in the controller.

• FileBrowseView is similar, owner is FileBrowseViewController, has an outlet called browseView.

So in App delegate I have the following code:

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    fileBrowseViewController = [[FileBrowseViewController alloc]
        initWithNibName:@"FileBrowseView" bundle:nil];  
}

- (IBAction)importHandsClicked:(id)sender {
    [NSApp activateIgnoringOtherApps:YES];
    [filePanel setIsVisible:YES];
    [filePanelView addSubview:[fileBrowseViewController browseView]]; 

}

The action does make filePanel visible, but it doesn't add the browseView to it. Am I doing something wrong?

Answer 1

Check that [fileBrowseViewController browserView] is not nil.

This is highly probably, especially if you forgot or failed to link your browseView IBOutlet to the actual UIView that represents your FileBrowseView instance in InterfaceBuilder.

[EDIT] For more info about connecting outlets, see Apple's InterfaceBuilder Help here (including tutorial video).