nsdictionary

I've run into the same problem as found in this question . However, I have a follow-up question. I seem to be in the same situation as the original asker: I have a plist with a hierarchy of dictionaries that define a configuration screen. These are not mutable and will stay the same throughout the application. Since the original discussion seems to focus on problems arising from mutating the dictionary, I must ask for comfirmation: is the order of a dictionary guaranteed the same as they are in the plist, i.e. as it is read (with initWithContentsOfFile)? Can I use allKeys on it in this case to

Hello I a class of type NSObject: ProductDetails *details = [[ProductDetails alloc] init]; details.name = @"Soap1"; details.color = @"Red"; details.quantity = 4; I want to pass the "details" object to a dictionary. I did, NSDictionary *dict = [NSDictionary dictionaryWithObject:details forKey:@"details"]; I am passing this dict to another method which performs a check on JSONSerialization: if(![NSJSONSerialization isValidJSONObject:dict]) And I am getting a crash on this check. Am I doing anything wrong here? I know that the details I am getting is a JSON object and I am assigning it to the

I store names as keys and scores as values into an NSDictionary for saving in NSUserDefaults . I then want to get back the keys sorted by score, but I can't seem to sort them numerically, only by string. The list of scores 100, 50, 300, 200, 500, for example, gives me 100, 200, 300, 50, 500. Can this be done or do I need to go about this differently? NSString *defaultNames[] = {@"Matt", @"Terry",@"Jessica",@"Sean",nil}; NSNumber *defaultScores[] = {@"600", @"500",@"100",@"50", nil}; NSDictionary *newScoreDict = [NSDictionary dictionaryWithObjects:(id *)defaultScores forKeys:(id *)defaultNames

For an application i want to create a JSON in format as mentioned below, "Students" : { "results": { "Grade1": { "studentresult": "pass", "marksheet": "provided" }, "ID": 01, "Name": "Student1", } } I am using the following code to create the same, NSMutableDictionary *gradedetails = [[NSMutableDictionary alloc] init]; [gradedetails setObject:@"pass" forKey:@"studentresult"]; [gradedetails setObject:@"provided" forKey:@"marksheet"]; NSMutableDictionary *sdetails = [[NSMutableDictionary alloc] init]; [sdetails setObject:@"01" forKey:@"ID"]; [sdetails setObject:@"Name" forKey:@"Student1"];

If I have a custom class Person which has three variables (which are propertized and synthesized): NSString* theName; float* theHeight; int theAge; Person instances are stored in an NSArray 'Group'. There is only one Group. What is the best way of storing and loading the Group in NSUserDefaults? (bearing in mind that float and int are not legal for NSUserDefaults) @Brad Smith's answer is not complete, and even is incorrect in some sense. We have to use NSKeyedArchiver and NSKeyedUnarchiver as follows: Make your class (for example in this case Person ) to conform to protocol NSCoding and

I have a array (dataArray) of NSDictionary "item". It has datas like "david" for key "name" and "85" for key "marks" etc for 5 students. I want to replace the mark of david to 90 with respect to the array index value (ie 0 for dictionary containing david and 85). How can I do it? The code for content in array is [item setobject:name forkey:@"Name"]; [item setobject:mark forkey:@"Marks"]; [dataArray addOject:item] The above code goes inside parsing, so i have array with 5 objects (students), their name and marks, now I want to replace the mark of the first object in the dataArray. donkim Here's