How to Convert string to HexaDecimal?

android string hex type-conversion

18,899

This should be

Integer.toHexString(Integer.parseInt(String));

Ref : Convert to/from hexadecimal

18,899

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RajaReddy PolamReddy

I love programming. I mostly code in "Android", "ActionScript", "Adobe Flash", Adobe AS3, iOS, Objective-C . My App.. Image Crop Current applications BingoBash and Slots Bash SOreadytohelp

Updated on June 05, 2022

Comments

RajaReddy PolamReddy almost 2 years

I have a string like this:

"12"

And I need to convert it to a hex value like this:

0x12

I have a byte array like this

// 00 20 22 80 08 24 pi nn ff ff ff ff ff 
byte VerifyingAPDU[] = { (byte)0x00,(byte)0x20,(byte)0x00,(byte)0x80,(byte)0x08,(byte)0x24,
                     (byte)0x12,(byte)0x34, //pi nn
                     (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff };
Now i want to replace pi nn with user entered value in Eidter (EditText). how to do this ?

For example user entered 1111 in editer i have to replace Ox12 --> 0x11 and 0x34-->0x11.

RajaReddy PolamReddy almost 11 years

I tried like that.. see if i have String a = "12"; i want to get create hex value for that is 0x12. how to do this.
Simon almost 11 years

@RajaReddyPolamReddy, er, "0x" + Integer.toHexString(Integer.parseInt(String));
Pankaj Kumar almost 11 years

I agreed with @Simon. You can do like that. Is there any problem
RajaReddy PolamReddy almost 11 years

@PankajKumar i will check like this, let u know the result.
RajaReddy PolamReddy almost 11 years

Its giving me the HexaDecimal Value upto that it's ok. for my requirement i want to do like this. look at the edited Question.
Pankaj Kumar almost 11 years

@RajaReddyPolamReddy ahhhh your updated question is completely different from asked.. And you unaccepted the answer... :)
RajaReddy PolamReddy almost 11 years

Sry for that. Please can u tell me the solution for this. i am struck at that.please...
RajaReddy PolamReddy almost 11 years

For converting String to Hex this code working well..
Pankaj Kumar almost 11 years

int inputInteger = Integer.valueOf(edit_text_value); String firstHex = "0x" + Integer.toHexString(inputInteger/ 100); String secondHex = "0x" + Integer.toHexString(inputInteger % 100); Use these codes.. here I assumed that length of edittext is set to 4.
RajaReddy PolamReddy almost 11 years

Actually, if i enter 1234 was the pin i have to get 0x12 and 0x34, but this code gives me like this 0xc and 0x22..
Pankaj Kumar almost 11 years

yes I am right till you are asking about HEX. But again you are saying another thing if 12 should be 0X12 then this is not a HEX of 12. You can simply add '0X' to given string..
RajaReddy PolamReddy almost 11 years

@PankajKumar i tried to convert String to byte, i am unable to convert it. can u help me on this typecast..please.