Exception - Custom class initWithCoder unrecognized selector sent to instance in iPhone - ios

Question

I have an entity class which inherits NSObject that holds some data, and class name is "MessageDetails". i.e
MessageDetails.h Class-
#import <Foundation/Foundation.h>
#interface MessageDetails : NSObject
#property (nonatomic, retain) NSString *userImage;
#property (nonatomic, retain) NSString *userName;
#property (nonatomic, retain) NSString *message;
#property (nonatomic, retain) NSString *dateString;
#end
MessageDetails.m Class-
#import "MessageDetails.h"
#implementation MessageDetails
#synthesize userImage, userName, message, dateString;
- (id)initWithCoder:(NSCoder *)decoder {
if((self = [super init])) {
self.userImage = [decoder decodeObjectForKey:#"userImage"];
self.userName = [decoder decodeObjectForKey:#"userName"];
self.message = [decoder decodeObjectForKey:#"message"];
self.dateString = [decoder decodeObjectForKey:#"dateString"];
}
return self;
}
- (void)encodeWithCoder: (NSCoder *)coder
{
[coder encodeObject:userImage forKey:#"userImage"];
[coder encodeObject:userName forKey:#"userName"];
[coder encodeObject:message forKey:#"message"];
[coder encodeObject:dateString forKey:#"dateString"];
}
#end
In my View Controller class, I am sending some messages to Recipent .After sending successfully message, i am storing some values to "MessageDetails" class objects like userImage, userName, message and dateString, that i have to show in another class table view. So i am setting messageDetails object value successfully using NSUserDefault using this code..
NSMutableArray *finalArray=[[NSMutableArray alloc]init];
NSMutableArray *array=[[NSMutableArray alloc]init];
array= [Util getArrayPreference:#"MessageDetails"];
if (array) {
[finalArray addObjectsFromArray:array];
}
[finalArray addObject:messageDetails];
[Util setArrayPreference:finalArray forKey:#"MessageDetails"];
//For setting preferences
+(void)setPreference:(MessageDetails *)product forKey:(NSString *)key
{
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
NSData *myEncodedObject = [NSKeyedArchiver archivedDataWithRootObject:product];
[prefs setObject:myEncodedObject forKey:key];
[prefs synchronize];
}
+(void)setArrayPreference:(NSMutableArray *)products forKey:(NSString *)string
{
for (int i=0; i<products.count; i++) {
MessageDetails *po=[products objectAtIndex:i];
NSString *st=[NSString stringWithFormat:#"%d",i];
[Util setPreference:po forKey:st];
}
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
NSData *myEncodedObject = [NSKeyedArchiver archivedDataWithRootObject:products];
[prefs setObject:myEncodedObject forKey:string];
[prefs synchronize];
}
//For getting preferences
+(MessageDetails *)getPreference:(NSString *)key
{
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSData *myEncodedObject1 = [defaults objectForKey:key];
MessageDetails *obj = (MessageDetails *)[NSKeyedUnarchiver unarchiveObjectWithData: myEncodedObject1];
return obj;
}
+(NSMutableArray *)getArrayPreference:(NSString *)string
{
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSData *myEncodedObject1 = [defaults objectForKey:string];
NSMutableArray *arr1=[[NSMutableArray alloc]init];
NSMutableArray *arr=(NSMutableArray *) [NSKeyedUnarchiver unarchiveObjectWithData: myEncodedObject1];
for (int i=0;i<arr.count;i++) {
NSString *st=[NSString stringWithFormat:#"%d",i];
[arr1 addObject:[Util getPreference:st]];
}
return arr;
}
But my problem is when i am calling getArrayPreference method then after
NSMutableArray *arr=(NSMutableArray *) [NSKeyedUnarchiver unarchiveObjectWithData: myEncodedObject1];
this line it is crashing. And an Exception that i am getting is
2013-08-25 12:32:22.802 SmsIndia[551:1d003] -[MessageDetails initWithCoder:]: unrecognized selector sent to instance 0xae68160****
2013-08-25 12:32:22.802 SmsIndia[551:1d003] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[MessageDetails initWithCoder:]: unrecognized selector sent to instance 0xae68160'**
I'm doing something wrong but I'm not sure what. Any help would be greatly appreciated ..., thank you!
If someone have any doubt related to question then let me know.