Question

What is the best way to prevent my app from crash?

I’m using a JSON service that sometimes get NULL fields. What is the best way to prevent it?

Right now, I’ve to do this on every field:

if(![[[[Dictionary objectForKey:@"option"] objectForKey:@"option"] objectForKey:@"option"] isKindOfClass:[NSNull class]])

The problem is that the Dic is very complex, and sometimes I even get no the field I look for. So that’s a lot of validations.

Answer 1

Try this one :

NSString *tel = [jsonDictionary valueForKey:@"Telephone"];   
if (tel == (NSString *)[NSNull null]) {
       // do logic here
}