NSKeyedArchiver (对象归档)

数组归档、反归档

NSData *archiveData = [NSKeyedArchiver archivedDataWithRootObject:allAry];
    // NSLog(@"archive:%@",archive);
    NSArray *arr2 = [NSKeyedUnarchiver unarchiveObjectWithData:archiveData];
    NSLog(@"arr2:%@",arr2);