I want to store NSString data in NSMutableDictionary

Question

I'm trying to store data in NSMutableDictionary. continue change NSString value I want to store this value in NSMutableDictionary, but when second time store value in NSMutableDictionary then clear old value so how to store one by one value in NSMutableDictionary.

    NSString *tempitemname = itemselectedlbl.text;
    NSString *temprate = ratelbl.text;
    NSString *tempquant = quantitylbl.text;
    NSString *temptotal = totallbl.text;
    NSString *temptotalbill = totalbilllbl.text;

    dict = [[NSMutableDictionary alloc]init];

    [dict setValue:tempitemname forKey:@"itemname"];
    [dict setValue:temprate forKey:@"rate"];
    [dict setValue:tempquant forKey:@"quantity"];
    [dict setValue:temptotal forKey:@"total"];
    [dict setValue:temptotalbill forKey:@"totalbill"];

Continue change all labels value I want store these values in NSMutableDictionary.

Answer 1

NSDictionary/NSMutableDictionary doesn't allow duplicate key to store inside them. So when you set the values second time then it overwrites the data if there is already a key available inside the dictionary. So you can't store again and again and still expect it to hold all the data.