CODEWITHSUNDEEP
iosobjective-cinit
user2974968
user2974968

Reputation:

Calling init Method in Objective C

I'm just getting to the part of my Obj-C book where init methods are covered. I understand them, but I'm not sure where to call the method. I have a VC class that needs to have one of its @propertys set to another value, besides the default 0 before the rest of the code is executed. VC is a subclass of UIViewController.

Here is my code for the init method in VC.m:

- (id)initmethod
{
    if((self = [super init])){
        self.value = -1 ;
    }
    return self ;
}

Where do I call this? Do I need to have a sub class that calls it? Or do I need to manually create the VC object that is linked to the view and call this method there?

Upvotes: 1

Views: 2798

Answers (1)

rdelmar
rdelmar

Reputation: 104082

Yes you need to call this when you create the controller,

VC *vcInstance = [[VC alloc] initMethod];

There's really no need to create your own init method though, you can just override init.

If you're making your controller in a storyboard however, you would want to override initWithCoder, and set your value property there. 

-(id)initWithCoder:(NSCoder *)aDecoder {
    if (self = [super initWithCoder:aDecoder]) {
        _value = -1; // you should use the ivar rather than self.propertyName inside an init method
    }
    return self;
}

Likewise, if the controller is made in a xib file you should override initWithNibName:bundle:

Upvotes: 1

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