学步园

NSString *Path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
    NSString *filename = [Path stringByAppendingPathComponent:@"test.plist"];

    [NSKeyedArchiver archiveRootObject:obj1 toFile:filename];
    
    [NSKeyedUnarchiver unarchiveObjectWithFile:filename];