How convert string with hex characters convert to human readable value of that hex

Question

I am newbie in android/java. I'd like to show a human-readable string of a hex value in a CharSequence on a EditText. The code is here. This code shows the string representation of the hex e.g: 7465737420202020203f7465737420202020202020202020203f7465737420202020202020202020203fd3f7d3f7d3f77f078840ffffffffffff

This is what I want to show:

test     ?test           ?test           ?Ó÷Ó÷Ó÷ˆ@ÿÿÿÿÿÿ

How should I do to convert hex value in text. I tried many convert ways but I either got runtime errors or a wrong characters.

possible duplicate of [Convert hex string to int](http://stackoverflow.com/questions/11194513/convert-hex-string-to-int) — kiranpradeep, Mar 24 '15 at 21:31

Laerte · Accepted Answer · 2015-03-24T20:08:59.353

4

You can do like this:

    String a = " 7465737420202020203f7465737420202020202020202020203f7465737420202020202020202020203fd3f7d3f7d3f77f078840ffffffffffff";
    a = a.trim();
    StringBuffer result = new StringBuffer();

    for (int i = 0; i < a.length(); i+=2) {
        String sub = a.substring(i, i+2);
        int b = Integer.parseInt(sub, 16);
        result.append((char)b);
    }

    System.out.println(result);

This code takes in consideration that the original string will be always valid. There are no checkings.

It's the basic idea, hope it helps!

edited Mar 24 '15 at 20:08

answered Mar 24 '15 at 19:58

Laerte

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Use StringBuffer instead? – ci_ Mar 24 '15 at 20:06

How convert string with hex characters convert to human readable value of that hex

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