在NSUserDefaults中的NSMutableArray中存储自定义对象

@interface Person : NSObject <NSCoding>
@property (nonatomic, strong) NSString *name;
@property (nonatomic, assign) NSInteger age;
- (void)encodeWithCoder:(NSCoder *)encoder;
- (instancetype)initWithCoder:(NSCoder *)decoder;
@end

@implementation Person
- (void)encodeWithCoder:(NSCoder *)encoder {
    [encoder encodeObject:self.name forKey:@"name"];
    [encoder encodeInteger:self.age forKey:@"age"];
}

- (instancetype)initWithCoder:(NSCoder *)decoder {
    self = [super init];
    if (self) {
        self.name = [decoder decodeObjectForKey:@"name"];
        self.age = [decoder decodeIntegerForKey:@"age"];
    }
    return self;
}
@end

Person *person = [[Person alloc] init];
person.name = @"John Doe";
person.age = 30;

NSMutableArray *array = [[NSMutableArray alloc] init];
NSData *personData = [NSKeyedArchiver archivedDataWithRootObject:person];
[array addObject:personData];

[[NSUserDefaults standardUserDefaults] setObject:array forKey:@"peopleArray"];
[[NSUserDefaults standardUserDefaults] synchronize];

NSData *dataArray = [[NSUserDefaults standardUserDefaults] objectForKey:@"peopleArray"];
NSMutableArray *array = [NSKeyedUnarchiver unarchiveObjectWithData:dataArray];

for (NSData *personData in array) {
    Person *person = [NSKeyedUnarchiver unarchiveObjectWithData:personData];
    NSLog(@"Name: %@, Age: %ld", person.name, (long)person.age);
}