-(void)transformObjects:(NSMutableArray*)array key:(NSString*)key
{
NSMutableArray* archiveArray = [[NSMutableArray alloc]initWithCapacity:array.count];
for (Furniture *furniture in array) {
// The error occurs on the line below
NSData *furnitureEncodedObject = [NSKeyedArchiver archivedDataWithRootObject:furniture];
[archiveArray addObject:furnitureEncodedObject];
}
NSUserDefaults *userData = [NSUserDefaults standardUserDefaults];
[userData setObject:archiveArray forKey:key];
}
Error log:
2014-03-04 10:55:27.881 AppName[10641:60b] -[Furniture encodeWithCoder:]: unrecognized selector sent to instance 0x15d43350
I have no idea why do I get "unrecognized selector sent to instance" when trying to archive an object.
You need to implement NSCoding protocol inside your Furniture object:
- (void)encodeWithCoder:(NSCoder *)aCoder{
[aCoder encodeObject:self.yourpoperty forKey:@"PROPERTY_KEY"];
}
-(id)initWithCoder:(NSCoder *)aDecoder{
if(self = [super init]){
self.yourpoperty = [aDecoder decodeObjectForKey:@"PROPERTY_KEY"];
}
return self;
}
Basically you specify what should be written (encoded) and read from a file (decoded). Usually for each property you want to store in a file, you make same as I did here in an example.