CODEWITHSUNDEEP
objective-ciosselector
Brian Sherman
Brian Sherman

Reputation: 35

Selector Objective-C setting

I'm making a custom button in Objective-C, GLButton. I want to follow the Target-Action Design Pattern. So in GLButton I have 

SEL _action;
NSObject *_target;

- (void) setAction:(SEL) action{
    _action = action;
} 

- (void) setTarget:(NSObject*) target{
    _target = target;
}

and to perform the action it calls

[_target performSelector:_action];

In the class that instantiates GLButton I have the methods 

- (void) button1{
    NSLog(@"button1");
}

- (void) button2{
    NSLog(@"button2");
}

I then set the respective target/action

[b1 setTarget:self];
[b1 setAction:@selector(button1)];
[b2 setTarget:self];
[b2 setAction:@selector(button2)];

but when I click either button it always fires the last target set, in this case button2.

Any idea how to fix this?

Upvotes: 1

Views: 990

Answers (1)

bbum
bbum

Reputation: 162712

Are these instance variables or declared at a random place in your .m files?

SEL _action;
NSObject *_target;

They need to be instance variables or, better yet, @property declarations.

Upvotes: 2

Related Questions