Call "sender id" in Xcode

Question

Here is the method I want to name:

- (void)myMethod:(id)sender {

What would I call it? I tried:

[self myMethod]

^ error: The expected expression before the marker "]".

I know this is a simple question, but I'm new to iPhone development

Answer 1

The method takes one parameter, so you must provide it. If you don't have the sender you want to give, just pass nil:

[self myMethod:nil];

You can also overload the method as a convenience:

// declarations
- (void)myMethod;
- (void)myMethod:(id)sender;

// implementations
- (void)myMethod { [self myMethod:nil]; }
- (void)myMethod:(id)sender { /* do things */ }

Answer 2

If you do not want to send an object of indefinite type to your method, you do not need a part (id)sender:

- (void)myMethod {

}

Answer 3

, .

[self myMethod:something]

, , .