CODEWITHSUNDEEP
objective-c
fewaf
fewaf

Reputation: 151

How do I manipulate a property using an NSString variable?

It seems like I need key value coding. I have a bunch of bluetooth beacons, and when I get a signal from one I need to do something with a property. If the beacon is called Beacon5, then the property is called Beacon5path. I want to make 

_Beacon5path.hidden = true

So I have a variable 

NSString* myBeacon = @"Beacon5path"

And I can do

id value = [self valueForKey:myBeacon];

How do I then manipulate this?

I tried 

value.hidden = true;

or _value.hidden = true;

But those don't do anything.

Upvotes: 0

Views: 58

Answers (1)

Phillip Mills
Phillip Mills

Reputation: 31016

Since it's a UIView that you want to hide, you can either test that it's the right kind of class and then cast it as a UIView to keep the compiler happy or you can take a more general approach and check whether it's anything you can hide, such as:

if ([value respondsToSelector:@selector(setHidden:)]) {
    [value setHidden:YES];
}

Upvotes: 1

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