Question

I am using the below code to retrieve data from web services coming in JSON format

NSString *responseString = [request responseString];
NSDictionary *responseDict = [responseString JSONValue];   
NSMutableDictionary *statusDict = [responseDict objectForKey:@"body"];
NSArray *arrayPickListValue = [statusDict objectForKey:@"ticketEntries"];

sometimes data is coming in arrayPickListValue and showing the content on iPhone, however sometimes if ticketEntries key is Null , it is showing Variable is not a CFArray, so how do i solve with this issues

Answer 1

As @Beppe said, you need to check it first:

// check whether it is NULL or not first
id arrayPickListValue = [statusDict objectForKey:@"ticketEntries"];
if ([arrayPickListValue isKindOfClass:[NSNull class]]) {
    // manage the error
    return;
}

// do work