store NSobject data into Nsuserdefaults - ios

Question

In My Modal Object two values are there
I'm trying to store in NSUserDefaults. This is My Code
interface File:
#interface collectionModel : NSObject <NSCoding> {
}
#property(nonatomic,retain) NSString *name;
#property(nonatomic,retain) NSString *author;
Implementation File:
#implementation collectionModel
#synthesize name = _name;
#synthesize author = _author;
- (id)initWithCoder:(NSCoder *)aDecoder {
if (self = [super init]) {
self.name = [aDecoder decodeObjectForKey:#"name"];
self.author = [aDecoder decodeObjectForKey:#"author"];
}
return self;
}
- (void)encodeWithCoder:(NSCoder *)aCoder {
[aCoder encodeObject:_name forKey:#"name"];
[aCoder encodeObject:_author forKey:#"author"];
}
ViewController.M
#import "collectionModel.h"
parsedCollectionArr = [[NSMutableArray alloc] init];
for (NSDictionary *obj in collectionBalk) {
NSString * Name = [obj objectForKey:#"Name"];
NSString * author = [obj objectForKey:#"author"];
collectionModel *dataObj = [[collectionModel alloc] init];
dataObj.name = Name;
dataObj.author = author;
[parsedCollectionArr addObject:dataObj];
}
NSLog(#"parsedCollectionArr count ---->>>> %d",23);
Here I want to store this parsedCollectionArr in NSUserDefaults and retrive from it.can any one help me.

Answer 1

try this..
Create a class like "CollectionModelManager.h and .m"
//For Save CollectionModel
+ (void)saveCollectionModel:(CollectionModel *) collectionModel
{
NSData *encodedData = [NSKeyedArchiver archivedDataWithRootObject:collectionModel];
NSUserDefaults *userDef = [NSUserDefaults standardUserDefaults];
[userDef setObject:encodedData forKey:kCollectionModelKey]; //here kCollectionModelKey is a static string
[userDef synchronize];
}
//For Get CollectionModel
+ (CollectionModel *)getCollectionModel
{
NSUserDefaults *userDef = [NSUserDefaults standardUserDefaults];
CollectionModel *collectionModel = nil;
NSData *encodedData = [userDef objectForKey:kCollectionModelKey]; //Same static string use here kCollectionModelKey
if (encodedData != nil) {
collectionModel = [NSKeyedUnarchiver unarchiveObjectWithData:encodedData];
}
return collectionModel;
}