Best way to save to nsuserdefaults for custom class?

Question

If I have a custom class Person which has three variables (which are propertized and synthesized):

NSString* theName;
float* theHeight;
int theAge;
         


        

Answer 1

I find implementing encodeWithCoder and initWithCoder quite boring, especially if you have many attributes in your class, and many classes to save to NSUserDefaults.

I create a library RMMapper (https://github.com/roomorama/RMMapper) to help save custom object into NSUserDefaults easier and more convenient.

To mark a class as archivable, just use: #import "NSObject+RMArchivable.h"

To save a custom object into NSUserDefaults:

#import "NSUserDefaults+RMSaveCustomObject.h"

NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
[defaults rm_setCustomObject:user forKey:@"SAVED_DATA"];

To get custom obj from NSUserDefaults:

user = [defaults rm_customObjectForKey:@"SAVED_DATA"];