NSDictionary to NSArray

NSDictionary *myDictionary = [[NSDictionary alloc] initWithObjectsAndKeys:@"value1", @"key1", @"value2", @"key2", nil];  
NSArray *copiedArray = myDictionary.copy;

NSArray *keys = [myDictionary allKeys];

NSArray *values = [myDictionary allValues];