i have a plist that's at its root an array with dictonaries inside it.
i load a plist from my recourses as an NSMutableArray.
[NSMutableArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"Filters" ofType:@"plist"]]
i store it into nsuserdefault because it has to be persistent between startups.
[[NSUserDefaults standardUserDefaults] setObject:array forKey:@"filters"];
but i can't change the dictonaries in the array because they are not mutable. how can i make them mutable?
You can replace the dictionary by a mutable copy of itself, using the 'mutableCopy' method of NSDictionary.
[EDIT] Example:
[ array replaceObjectAtIndex: 42 withObject: [ [ [ array objectAtIndex: 42 ] mutableCopy ] autorelease ] ];