Question

I have a NSMutableArray containing NSMutableDictionary values. I have to identify a particular dictionary value exist in that NSMutableArray or not?

NSMutableArray:

tableData:

{
    {

        categories = 267;
        "category_ids" = 267;
        "created_at" = "2012-04-18 05:32:10";
        "custom_design_from" = "2010-12-03 00:00:00";
    }
    {
        categories = 267;
        "category_ids" = 267;
        "created_at" = "2012-04-18 05:32:10";
        "custom_design_from" = "2010-12-03 00:00:00";
    }
 }

I have to identify the one particular dictionary value.

My Code:

if ( [tableData containsObject:[appDelegate.Product objectAtIndex:i]] ) 
{
     // Return Always false...
}

Answer 1

As far as I remember, containsObject: method check if array contains given object by sending isEqual: message to all instances in it. NSDictionary class has method isEqualToDictionary: that comares dictionary’s content. You can try to make smth like this

- (BOOL) dictionaryArray:(NSMutableArray*)array containsDictionary:(NSDictionary*)givenDictionary
{
    BOOL result = NO;

    for( NSDictionary* dict in array )
    {
        if( [dict isEqualToDictionary:givenDictionary] )
        {
            result = YES;
        }
    }

    return result;
}

this method should return if your array contains given dictionary by calling

NSDictionary* dict = [appDelegate.Product objectAtIndex:i];
if ( [self dictionaryArray:tableData containsDictionary:dict] )
{
    // do what you need
}