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    <p>The first byte of URI payload is the <em>URI identifier code</em>, it is an URI prefix like <code>http://www.</code> or <code>mailto:</code>. You correctly added a byte to the payload length and used an offset of <code>1</code> when copying your URL. You never write this byte so it remains <code>0x00</code> (<em>no prefix</em>), which means you need write the whole URL. This is fine, though you could set it to <code>0x03</code> for a <code>http://</code> prefix if you want to save a few bytes.</p> <p>When reading the payload with <code>msg.getRecords()[0].getPayload()</code>, you need to cut off that byte and add the prefix yourself. I don't think there's a native Android API for this, so you would have to lookup the prefix yourself or try the library mentioned in the other answer.</p> <p>To read the uri correctly you should use something like this:</p> <pre><code>byte[] payload = msg.getRecords()[0].getPayload(); byte identifierCode = payload[0]; String prefix = getUrlPrefix(identifierCode); // you need to implement this one String url = prefix + new String(payload, 1, payload.length -1, Charset.forName("US-ASCII")); getData.execute(url); </code></pre> <p>The method <code>getUrlPrefix</code> could contain a simple switch statement to return a prefix string for an identifier code.</p> <p>You can see a list of codes here: <a href="http://learn.adafruit.com/adafruit-pn532-rfid-nfc/ndef" rel="nofollow">About the NDEF Format</a></p> <blockquote> <pre><code>Value Protocol ----- -------- 0x00 No prepending is done ... the entire URI is contained in the URI Field 0x01 http://www. 0x02 https://www. 0x03 http:// 0x04 https:// 0x05 tel: 0x06 mailto: 0x07 ftp://anonymous:anonymous@ 0x08 ftp://ftp. 0x09 ftps:// 0x0A sftp:// ... </code></pre> </blockquote>
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    1. POIllegal character in NDEF URI payload
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    1. COHi, I've tried adding the URI Identifier code like this: byte[] payload = new byte[uriField.length + 1]; payload[0] = 0x03; System.arraycopy(uriField, 0, payload, 1, uriField.length); I still get the same error.
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    2. CO@Sujal The main point was that the identifier code byte is included in the payload when reading it. I updated the answer with an example.
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    3. COThanks a lot! This solved the problem.
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