How to restrict the access of property in the UIbutton in iPhone?

Question

I want to restrict some property from the exisiting class of the components.

Here is the sample code,

UIButton *customBtn;
property (nonatomic, strong) UIButton *customBtn;
@synthesize customBtn;

this my implementation,

customBtn= [UIButton buttonWithType:UIButtonTypeCustom];
 customBtn= setImage:[UIImage imageNamed"radio_button_noraml.png"] forState:UIControlStateNormal];
 customBtn= setImage:[UIImage imageNamed"radio_button_acitve.png"] forState:UIControlStateSelected];
 customBtn = CGRectMake(5, 30, 20, 20); notsupport = [[UILabel alloc]initWithFrame:CGRectMake(25, 30, 290, 20)];
 [customBtn addTargetelf actionselector(MyAction:) forControlEvents:UIControlEventTouchUpInside];
 [self.view addSubview:customBtn];

In my view controller, i could access all the property in the UIbutton using the customBtn.

myClass.customBtn.backGroundcolor = [UIColor blackColor];

But i want to restrict the access of the button properties,For eg.i want to access the propertybackground color and alpha value, rest of the property i don't want to access.

so please help me out.

Thanks!

Answer 1

In objective-c all methods are public, and property are nothing but setter and getter (methods).
So you can't restrict existing methods/properties.
And even if you subclass it you can only override it.
There you can add an NSAssert if anyone uses that method.