NSString?*str?=?@"0xff055008";??

//先以16為參數(shù)告訴strtoul字符串參數(shù)表示16進(jìn)制數(shù)字，然后使用0x%X轉(zhuǎn)為數(shù)字類型??

unsigned?long?red?=?strtoul([str?UTF8String],0,16);??

//strtoul如果傳入的字符開頭是“0x”,那么第三個(gè)參數(shù)是0，也是會(huì)轉(zhuǎn)為十六進(jìn)制的,這樣寫也可以：??

unsigned?long?red?=?strtoul([@"0x6587"?UTF8String],0,0);??

NSLog(@"轉(zhuǎn)換完的數(shù)字為：%lx",red);??

?

[objc] view plaincopy

//?十六進(jìn)制轉(zhuǎn)換為普通字符串的。???

+?(NSString?*)stringFromHexString:(NSString?*)hexString?{?//???

???

charchar?*myBuffer?=?(charchar?*)malloc((int)[hexString?length]?/?2?+?1);???

bzero(myBuffer,?[hexString?length]?/?2?+?1);???

for?(int?i?=?0;?i?<?[hexString?length]?-?1;?i?+=?2)?{???

unsigned?int?anInt;???

NSString?*?hexCharStr?=?[hexString?substringWithRange:NSMakeRange(i,?2)];???

NSScanner?*?scanner?=?[[[NSScanner?alloc]?initWithString:hexCharStr]?autorelease];???

[scanner?scanHexInt:&anInt];???

myBuffer[i?/?2]?=?(char)anInt;???

}???

NSString?*unicodeString?=?[NSString?stringWithCString:myBuffer?encoding:4];???

NSLog(@"------字符串=======%@",unicodeString);???

return?unicodeString;???

???

???

}???

???

//普通字符串轉(zhuǎn)換為十六進(jìn)制的。???

???

+?(NSString?*)hexStringFromString:(NSString?*)string{???

NSData?*myD?=?[string?dataUsingEncoding:NSUTF8StringEncoding];???

Byte?*bytes?=?(Byte?*)[myD?bytes];???

//下面是Byte?轉(zhuǎn)換為16進(jìn)制。???

NSString?*hexStr=@"";???

for(int?i=0;i<[myD?length];i++)???

???

{???

NSString?*newHexStr?=?[NSString?stringWithFormat:@"%x",bytes[i]&0xff];///16進(jìn)制數(shù)???

???

if([newHexStr?length]==1)???

???

hexStr?=?[NSString?stringWithFormat:@"%@0%@",hexStr,newHexStr];???

???

else???

???

hexStr?=?[NSString?stringWithFormat:@"%@%@",hexStr,newHexStr];???

}???

return?hexStr;???

}???

[objc] view plaincopy

//int?轉(zhuǎn)data??

int?i?=?1;???

NSData?*data?=?[NSData?dataWithBytes:?&i?length:?sizeof(i)];???

//data?轉(zhuǎn)int??

int?i;???

[data?getBytes:?&i?length:?sizeof(i)];??

轉(zhuǎn)載于:https://www.cnblogs.com/Free-Thinker/p/9155380.html

創(chuàng)作挑戰(zhàn)賽新人創(chuàng)作獎(jiǎng)勵(lì)來(lái)咯，堅(jiān)持創(chuàng)作打卡瓜分現(xiàn)金大獎(jiǎng)

總結(jié)

以上是生活随笔為你收集整理的iOS中NSString转换成HEX（十六进制）-NSData转换成int的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問(wèn)題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。