How can I change a label when other labels change?

I am trying to make a label change when other 2 labels change. The 2 labels constantly change randomly.

Here's the code:if ([labes.text 开发者_开发问答isEqualToString:@"haha"] && [alizz.text isEqualToString:@"hoho"]) { laab.text = @"hello"; }

Maybe refreshing every 0.0005 seconds will work?

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How you are changing other two labels? you can add some function that update you third label just after updating the other two.

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You Can try nstimer for call method in time intervel.