如何将自定义对象的NSArray归档到Objective-C中的文件

@interface CustomObject : NSObject <NSCoding>
@property (nonatomic, strong) NSString *name;
@property (nonatomic, assign) NSInteger age;
@end

@implementation CustomObject

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

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

@end

NSArray *customArray = @[customObject1, customObject2, customObject3];
NSString *filePath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject stringByAppendingPathComponent:@"customArray.archive"];
[NSKeyedArchiver archiveRootObject:customArray toFile:filePath];

NSString *filePath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject stringByAppendingPathComponent:@"customArray.archive"];
NSArray *customArray = [NSKeyedUnarchiver unarchiveObjectWithFile:filePath];