ios - NSUserDefaults存取long变量时有问题

Question

存

int userid = userId;
[userDefault setInteger:userid forKey:@"userId"];

取

long userId = [[NSUserDefaults standardUserDefaults] integerForKey:@"userId"];

存的时候userId是id类型。
这时候我取出的数是一个很大的数。请问这是怎么回事？

Answer 1

Use setObject to save the id variable when saving, and use integerForKey when fetching.

Answer 2

The problem is

int userid = userId;

should be changed to

NSInteger userid = userId;
...

Because
NSInteger != int

See picture