Question

I have a segment control added to the navigation bar. It works fine. When i click on a segment (say index 0) it should load UIView A for me. and when i click on segment 1 it should load UIView B for me.

I have initialized UIVIew A in my .h file. and i am accessing it in the .m file as follows;

Here i am adding a Button and a label to View A

UIButton *buttonAdded= [UIButton buttonWithType:UIButtonTypeRoundedRect];
    signUpButton.frame = CGRectMake(100, 100, 300, 50);
......

[self.viewA addSubview:buttonAdded]; 
// similarly added a label too
[self.viewA addSubview:labelAdded]; 

Now i added another Button and a Label to View B as the previous code;

// i have not shown how to declare a button and label, coz its same as above
[self.viewB addSubview:buttonAddedB]; 
[self.viewB addSubview:labelAddedB]; 

EDIT: I ADDED BOTH THESE VIEWS (View A & View B) IN THE VIEWDIDLOAD METHOD.

The problem is that when i click the segments nothing appears on the screen. Can someone please help me modify the code so it will work ?

Answer 1

Your viewA and viewB are NULL.

You have not allocated/initialized your viewA. There needs to be code somewhere that either hooks up a view from your nib (an IBOutlet), or you need something like this:

 UIView *viewA = [[UIView alloc] initWithFrame:CGRectMake(x,y,width,height)];

Then you can use viewA.