您可以使用NSString上的intValue方法：

You can use the intValue method on NSString:

NSString *myString = @"123";
[myString intValue]; // returns (int)123

以下是它的Apple文档 - 如果它是，它将返回0不是有效的整数： http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Classes/NSString_Class/Reference/NSString.html#//apple_ref/occ/instm/ NSString / intValue

Here is the Apple documentation for it - it will return 0 if it's not a valid integer: http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Classes/NSString_Class/Reference/NSString.html#//apple_ref/occ/instm/NSString/intValue

希望有所帮助！