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POIllegal character in NDEF URI payload
 

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  1. POIllegal character in NDEF URI payload
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    <p>I'm writing NFC based app that would scan a NFC tag with a Url. Once, the tag is scanned, the app should retrieve information from a database and display it in a ListView. </p> <p>The error occurs when I scan the NFC tag. </p> <pre><code> Error in http connection java.lang.IllegalArgumentException: Illegal character in scheme at index 0: ??http://abc.com/~090123/get_items.php </code></pre> <p>The logcat displays some weird <code>??</code> characters before <code>http://</code>. </p> <p>I'm writing the Url in the tag using following code:</p> <pre><code>private boolean writeTag(Tag tag) { byte[] uriField = "http://abc.com/~090123/get_items.php".getBytes(Charset.forName("US-ASCII")); byte[] payload = new byte[uriField.length + 1]; System.arraycopy(uriField, 0, payload, 1, uriField.length); NdefRecord uriRecord = new NdefRecord(NdefRecord.TNF_WELL_KNOWN, NdefRecord.RTD_URI, new byte[0], payload); NdefMessage message = new NdefMessage(new NdefRecord[] { uriRecord}); // .... } </code></pre> <p>I'm receiving intent from the NFC tag like this:</p> <pre><code>protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.content_display); Intent intent = getIntent(); if(NfcAdapter.ACTION_NDEF_DISCOVERED.equals(getIntent().getAction())) { Parcelable[] rawMsgs = intent.getParcelableArrayExtra( NfcAdapter.EXTRA_NDEF_MESSAGES); if(rawMsgs != null) { NdefMessage msg = (NdefMessage) rawMsgs[0]; GetData getData = new GetData(this); getData.execute(new String(msg.getRecords()[0].getPayload())); } } } </code></pre> <p>And I'm retrieving information from database using the following code:</p> <pre><code>protected BufferedReader doInBackground(String... params) { ArrayList&lt;NameValuePair&gt; nameValuePairs = new ArrayList&lt;NameValuePair&gt;(); try { HttpClient httpclient = new DefaultHttpClient(); for (int i = 0; i &lt; params.length; i++) { HttpPost httppost = new HttpPost(params[i]); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); HttpResponse response = httpclient.execute(httppost); HttpEntity entity = response.getEntity(); is = entity.getContent(); } } catch (Exception e) { Log.e("log_tag", "Error in http connection " + e.toString()); } Log.e("Input Stream", "Input Stream:" + is); BufferedReader myReader = new BufferedReader(new InputStreamReader(is)); return myReader; } </code></pre> <p>I have the intent filter for the previous NDEF records like this:</p> <pre><code>&lt;activity android:name=".DisplayContentActivity" android:label="@string/app_name" &gt; &lt;intent-filter&gt; &lt;action android:name="android.nfc.action.NDEF_DISCOVERED" /&gt; &lt;data android:host="abc.com" android:pathPrefix="/~090123/get_items.php" android:scheme="http" /&gt; &lt;category android:name="android.intent.category.DEFAULT" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; </code></pre> <p>Any help would be appreciated.</p>
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