将十六进制字符串转换为long [英] Convert hex string to long

问题描述

有任何Cocoa类可以帮助我将NSString中的十六进制值转换为 0x12FA 到 long 或 NSNumber ？它看起来不像任何类如 NSNumberFormatter 支持十六进制数字。

Are there any Cocoa classes that will help me convert a hex value in a NSString like 0x12FA to a long or NSNumber? It doesn't look like any of the classes like NSNumberFormatter support hex numbers.

谢谢，
Hua-Ying

Thanks, Hua-Ying

推荐答案

这里有一个简短的例子说明如何使用NSScanner：

Here's a short example of how you would do it using NSScanner:

NSString* pString = @"0xDEADBABE";
NSScanner* pScanner = [NSScanner scannerWithString: pString];

unsigned int iValue;
[pScanner scanHexInt: &iValue];

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