memento objective c

[Duquan]

I want to realise mymento's paththern. My problem is that I want to keep the game even when the laser shuts the game. Now, I need to keep the Object...deck a little corny.

- (void)saveCurrentState
{    
    [[NSUserDefaults standardUserDefaults] setObject:_deck forKey:@"currentDeck"];
    NSLog(@"save");
}

(void)loadPreviousState

{

_deck = [[NSUserDefaults standardUserDefaults] objectForKey:@"currentDeck"];

[self updateCardWrapForAllCards];

NSLog(@"load");

}

created notification

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(saveCurrentState) name:UIApplicationDidEnterBackgroundNotification object:nil];

Well, now that I'm going to the back of the granite, that's what's going on. Thank you.

[guilherme]

In the deck class, you need to write two methods below (replace all objects from your class)

- (void)encodeWithCoder:(NSCoder *)encoder {
    //Encode properties, other class variables, etc
    [encoder encodeObject:self.question forKey:@"question"];
    [encoder encodeObject:self.categoryName forKey:@"category"];
    [encoder encodeObject:self.subCategoryName forKey:@"subcategory"];
}

(id)initWithCoder:(NSCoder *)decoder {

if((self = [super init])) {

//decode properties, other class vars

self.question = [decoder decodeObjectForKey:@"question"];

self.categoryName = [decoder decodeObjectForKey:@"category"];

self.subCategoryName = [decoder decodeObjectForKey:@"subcategory"];

}

return self;

}

Read and record in the user defaults:

- (void)saveCustomObject:(MyObject *)object key:(NSString *)key {

NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:object];

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

[defaults setObject:encodedObject forKey:key];

[defaults synchronize];

}

(MyObject *)loadCustomObjectWithKey:(NSString *)key {

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

NSData *encodedObject = [defaults objectForKey:key];

MyObject *object = [NSKeyedUnarchiver unarchiveObjectWithData:encodedObject];

return object;

}

The code is down. https://stackoverflow.com/questions/2315948/how-to-store-custom-objects-in-nsuserdefaults