decodeObjectForKey: array in Custom object returns nil

Question

I want to store array of custom object. So I have tried encode and decode. but its not working

Please check my code.

    - (IBAction)saveFile{
    NSLog(@"%@",self.drawingView.pathArray);
      NSData *arrayData = [NSKeyedArchiver archivedDataWithRootObject:self.drawingView];
    [arrayData writeToFile:[DOCUMENTPATH stringByAppendingPathComponent:@"1.plist"] atomically:YES];
}

Console O/P

 (
    "<ACEDrawingPenTool: 0x8b48d80;>",
    "<ACEDrawingPenTool: 0xa225530;>"
)

Now I m encoding array with this

- (void)encodeWithCoder:(NSCoder *)encoder {
    [encoder encodeObject:self.pathArray forKey:@"array"];
}

After this when I try to get object

 - (id)initWithCoder:(NSCoder *)aDecoder
{
        self = [super initWithCoder:aDecoder];

    if (self) {
        self.pathArray = [aDecoder decodeObjectForKey:@"array"];
        NSLog(@"%@",self.pathArray);  // returns nil
        [self configure];
    }
    return self;
}

decodeObjectForKey returns nil