1首先创建一个模型类，一定要遵守NSCoding协意。
@interface Contact : NSObject <NSCoding> @property (nonatomic, copy) NSString *name; @property (nonatomic, copy) NSString *phone; @end implementation Contact - (void)encodeWithCoder:(NSCoder *)encoder { [encoder encodeObject:self.name forKey:@"name"];//读取时属性对应的Key [encoder encodeObject:self.phone forKey:@"phone"]; } - (id)initWithCoder:(NSCoder *)decoder { if (self = [super init]) { self.name = [decoder decodeObjectForKey:@"name"]; //归档时属性对应的Key self.phone = [decoder decodeObjectForKey:@"phone"]; } return self; } @end
2测试归档
@interface ContactsTest : UITableViewController
@property (nonatomic, strong) NSMutableArray *array
@end
@implementation MJContactsViewController
-(void)writ{
//创建归档文件路径。“contacts.data”可以随便写
NSString *path=[[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"contacts.data"]
// 归档数组
[NSKeyedArchiver archiveRootObject:self. array toFile: path];
}
-(void)read{
NSString *path=[[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:@"contacts.data"]
self.array = [NSKeyedUnarchiver unarchiveObjectWithFile:path];
}
@end
原文：http://www.cnblogs.com/mgy007/p/4014562.html