如何将nsstring转换为Binary以及将该Binary转换为Hexadecimal

我在字符串中有多个值 这是我的字符串示例

I am having multiple values in the string Here is the example of my string

str1 = @"20AB"

str2 = @"298C30:2FC0A0:2FC09C:FFFFFFFF:2FDFCD34:00"

str3 = @"4ffd565372df51089f2c824526f4f95a13daa867"

str4 = hexa(binary(str1 + str2 +str3))

即我需要将字符串转换为二进制，然后转换为十六进制的十进制，然后将所有3个字符串合并为一个字符串.

i.e. I need to convert the strings to Binary and then to Hexa decimal and then concat all 3 strings in a single string.

请帮助我.

预先感谢