nsdictionary

I ran across something that I eventually figured out, but think that there's probably a much more efficient way to accomplish it. I had an object (an NSObject which adopted the MKAnnotation protocol) that had a number of properties (title, subtitle,latitude,longitude, info, etc.). I needed to be able to pass this object to another object, which wanted to extract info from it using objectForKey methods, as an NSDictionary (because that's what it was getting from another view controller). What I ended up doing was create a new NSMutableDictionary and use setObject: forKey on it to transfer each

I need to initialize a constant HashMap and would like to do it in one line statement. Avoiding sth like this: hashMap.put("One", new Integer(1)); // adding value into HashMap hashMap.put("Two", new Integer(2)); hashMap.put("Three", new Integer(3)); similar to this in objective C: [NSDictionary dictionaryWithObjectsAndKeys: @"w",[NSNumber numberWithInt:1], @"K",[NSNumber numberWithInt:2], @"e",[NSNumber numberWithInt:4], @"z",[NSNumber numberWithInt:5], @"l",[NSNumber numberWithInt:6], nil] I have not found any example that shows how to do this having looked at so many. You can do this: Map

I want to load the plist file from disk (documents, application cache, ...) not from a resource bundle. You can load a plist from any accessible file path with -initWithContentsOfFile: or +dictionaryWithContentsOfFile: Load a plist from a file, and create the file if it did not exist: NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); self.plistFile = [[paths objectAtIndex:0] stringByAppendingPathComponent:@"example.plist"]; self.plist = [[NSMutableDictionary alloc] initWithContentsOfFile:plistFile]; if (!plist) { self.plist = [NSMutableDictionary

I was wondering if someone can show me how to sort an NSDictionary ; I want to read it starting from the last entry, since the key is Date + Time and I want to be able to append it to an NSMutableString . I was able to read it using an enumerator but I don't get the results I want. Thanks For your requirements the easiest way is to create a new array from the keys, sort that, then use the array to reference items from the original dictionary. (Note myComparison is your own method that will compare two keys). NSMutableArray* tempArray = [NSMutableArray arrayWithArray:[myDict allKeys]];