将int转换为NSInteger
可能重复：
如何将NSInteger转换为int？
我是iOS编程新手，如何将int转换为NSInteger。我找到了关于如何将NSInteger转换为NSNumber的参考资料，但我无法弄明白。任何帮助，将不胜感激。谢谢。
I am new to iOS programming, how do I convert int to NSInteger. I have found references on how to convert NSInteger to NSNumber but I wasn't able to figure it out. Any help would be appreciated. Thanks.
改进的答案
在64位系统上 NSInteger long 。在32位系统上 NSInteger 是 int 。
https://developer.apple .com / library / content / documentation / Cocoa / Conceptual / Cocoa64BitGuide / 64BitChangesCocoa / 64BitChangesCocoa.html
An improved answer
On 64-bit systems NSInteger is long. On 32-bit systems NSInteger is int.
https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/Cocoa64BitGuide/64BitChangesCocoa/64BitChangesCocoa.html
您只需要投出 int to NSInteger 。
All you need just cast your int to NSInteger.
int i = 1;
NSInteger nsi = (NSInteger) i;
您还可以将 NSInteger 投射到 int （如原始答案中所述），但您必须小心64位系统，因为 NSInteger 可能超过 int 限制。
You can also cast NSInteger to int (as in an original answer), but you must be careful on 64-bit system, because your NSInteger can exceed int limits.
int i;
NSInteger nsi = 1;
i = nsi;
没有大科学。 ：）