Loading subview within viewcontroller programmatically

varchar · September 2008

Is anyone familiar with how to initialize/load a sub-view programmatically within an existing view which is part of a viewcontroller.

Here is the entire situation:

MyView.nib - created using interface builder. This nib has a UIView and another UIView [subview] within it. It uses MyViewController.

If I assign the class mysubview via interface builder. It works smoothly, no problemo.

But what I am interested in doing is loading the subview programmatically within a view controller, after some logic is done in the main view. (i.e. after I call a web service and depending on the results then I may want to load the subview). If assigning it directly in interface builder, it loads automatically, which defeats purpose of what i want to do.

I was figuring maybe I can load it via assigning the class similar to below within the viewcontroller:

myview1 = mysubview;

Obviously it is not working...

MySubView.h




@interface MySubView : UIWebView {	
	
}


@end

MySubView.M




#import \"MySubView.h\"

@interface MySubView (Private)
- (void) loadMap;
@end

@implementation MySubView


//------------------------------------------------------------------------------
- (void) didMoveToSuperview {
    // this hook method is used to initialize the view; we don't want 
    // any user input to be delivered to the UIWebView.

    self.userInteractionEnabled = NO;
    self.scalesPageToFit = NO;
    self.autoresizingMask = 
    	UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth;
    
	[self loadMap];
}

MyViewController.h




@interface MyViewController : UIViewController {

	IBOutlet UIView *mySubView1;
	
}

@end

PhoneyDeveloper · September 2008

So what you want is to have a view appear at some time later than when the view controller is pushed?

You can have the view in the nib but just not be already added to the WebView. So it will be created when the viewcontroller is created, your viewcontroller will identify it by an outlet, and at the appropriate time the view controller or the view will addSubview and make it visible.

Alternatively you can place it in its own nib. File's owner will be set to the same viewcontroller as you're using with the WebView so no viewcontroller in the nib. It will also be connected to the viewcontroller by an outlet. You don't use the viewcontroller's initWithNibName to load it. You use the APIs in UINibloading.h

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Loading subview within viewcontroller programmatically

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