CODEWITHSUNDEEP
iosobjective-c
dantastic
dantastic

Reputation: 134

Casting to class using a class name

I would like to cast to a class type by string value. 

    - (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {

    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {

        Class class = [self class];
        NSString *className = NSStringFromClass(class);

        NSArray* nibContents = [[NSBundle mainBundle] loadNibNamed:className owner:self options:NULL];
        NSEnumerator* nibEnumerator = [nibContents objectEnumerator];
        NSObject* nibObject = nil;
        while ((nibObject = [nibEnumerator nextObject]) != nil) {
            if ([nibObject isKindOfClass:class]) {
                self = nibObject; // <<< compiler warning
                break;
            }
        }
    }

    return self;
}

This code is part of a UITableViewCell superclass. I have a whole bunch of UITableViewCell subclasses that all wants to load their own nibs using the above snippet. This is working really well but I have a compiler warning on the line self = nibObject.

I would like to suppress the compiler warning but that would require casting, along the lines of

self = (className *)nibObject;

So how can I do this in my super class so I don't have to essentially repeat the above snippet in every subclass and cast per usual?

Upvotes: 0

Views: 136

Answers (1)

user3125367
user3125367

Reputation: 3000

If you are completely sure that classes are compatible, then cast it as id:

self = (id)nibObject;

(self is returned as id as well)

Upvotes: 2

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