iOS 十六進位和字串轉換

標籤：

    NSString *dictString = [dict JSONFragment];//組合成的。     dictString==={"content":"Sadgfdfg","phoneno":"","email":"[email protected]"}===          // 十六進位轉換為一般字元串的。     + (NSString *)stringFromHexString:(NSString *)hexString { //          char *myBuffer = (char *)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(@"------字串=======%@",unicodeString);     return unicodeString;               }          //一般字元串轉換為十六進位的。          + (NSString *)hexStringFromString:(NSString *)string{     NSData *myD = [string dataUsingEncoding:NSUTF8StringEncoding];     Byte *bytes = (Byte *)[myD bytes];     //下面是Byte 轉換為16進位。     NSString *hexStr=@"";     for(int i=0;i<[myD length];i++)          {     NSString *newHexStr = [NSString stringWithFormat:@"%x",bytes[i]&0xff];///16進位數          if([newHexStr length]==1)          hexStr = [NSString stringWithFormat:@"%@0%@",hexStr,newHexStr];          else          hexStr = [NSString stringWithFormat:@"%@%@",hexStr,newHexStr];     }     return hexStr;     }

 

iOS 十六進位和字串轉換