iPhone Adding Sub View dynamically

Newbie Q.

In my MainViewController, which is the first visible view.

I have a Circle class (no XIB) which subclasses UIView and overrides the draw method to draw a circle. Hello-World simple.

In the MainViewC开发者_如何转开发ontroller how do I add the custom class I wrote so that it appears programatically?

Do I need to do anything besides overriding the draw method in Circle?

ian

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If you are not loading MainViewController's view property from the NIB file (it's not connected to anything in interface builder), then I believe that you want to override the loadView method in MainViewController with something like:

- (void)loadView {
    view = [[CircleView alloc] init];
}

This will get called automatically at the right time so when MainViewController is created, the view can be added to the window as a subview by whatever instantiates MainViewController.