UIActivityIndicatorView

Create an ActivityIndicator programmatically

//Initalizing
UIActivityIndicatorView *myActivityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];

//Center to view
myActivityIndicator.center = self.view.center;
myActivityIndicator. autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleBottomMargin;

//Add to view
[[self view] addSubview:myActivityIndicator];