xcode 十进制到十六进制 - Cocoa/Objective-C
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Decimal to Hex - Cocoa/Objective-C
提问by Cindy Broutin
I need to convert some strings which have decimal content. I want these contents in a string, in hex format...
我需要转换一些具有十进制内容的字符串。我想要这些内容在一个字符串中，以十六进制格式......
How can I do it?
我该怎么做？
I tried to use NSScanner but this method seems to be a little bit huge to just make a dec-hex calculation?
我尝试使用 NSScanner 但这种方法似乎有点庞大，只能进行十进制计算？
Thanks for your answers!
感谢您的回答！
回答by Joe
If you know your string only contains a valid decimal number then the simplest way would be:
如果你知道你的字符串只包含一个有效的十进制数，那么最简单的方法是：
NSString *dec = @"254";
NSString *hex = [NSString stringWithFormat:@"0x%lX",
(unsigned long)[dec integerValue]];
NSLog(@"%@", hex);
