android nfc url read/write

NFC URL WIRTE

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@Override

protected void onNewIntent(Intent intent) {

super.onNewIntent(intent);

if (intent == null)

return;

Tag detectedTag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);

String writeValue = "http://www.naver.com";

NdefMessage message = createTagMessage(writeValue);

writeTag(message, detectedTag);

}

private NdefMessage createTagMessage(String msg) {

NdefMessage mMessage = new NdefMessage(NdefRecord.createUri(msg));

return mMessage;

}

public void writeTag(NdefMessage message, Tag tag) {

int size = message.toByteArray().length;

try {

Ndef ndef = Ndef.get(tag);

if (ndef != null) {

ndef.connect();

if (!ndef.isWritable()) {

Toast.makeText(getApplicationContext(), "can not write NFC tag",

Toast.LENGTH_SHORT).show();

}

if (ndef.getMaxSize() < size) {

Toast.makeText(getApplicationContext(),

"NFC tag size too large", Toast.LENGTH_SHORT).show();

}

ndef.writeNdefMessage(message);

Toast.makeText(getApplicationContext(),

"NFC tag is writted", Toast.LENGTH_SHORT).show();

} else {

NdefFormatable format = NdefFormatable.get(tag);

if (format != null) {

try {

format.connect();

format.format(message);

Toast.makeText(getApplicationContext(), "NFC tag is formatting",

Toast.LENGTH_SHORT).show();

} catch (IOException e) {

}

} else {

}

}

} catch (Exception e) {

}

}

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NFC URL READ

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@Override

public void onNewIntent(Intent intent) {

Parcelable[] messages = intent

.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);

if (messages == null)

return;

for (int i = 0; i < messages.length; i++)

showMsg((NdefMessage) messages[i]);

}

public void showMsg(NdefMessage mMessage) {

NdefRecord[] recs = mMessage.getRecords();

for (int i = 0; i < recs.length; i++) {

NdefRecord record = recs[i];

if (Arrays.equals(record.getType(), NdefRecord.RTD_URI)) {

  Uri u = record.toUri();

       Intent j = new Intent(Intent.ACTION_VIEW);

       j.setData(u);

       startActivity(j);

       finish();

}

}

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AndroidManifest.xml

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 <activity

            android:name=".NfcReader"

            android:screenOrientation="portrait" >

            <intent-filter>

                <action android:name="android.nfc.action.NDEF_DISCOVERED" />

                <category android:name="android.intent.category.DEFAULT" />

                <data android:scheme="http" />

            </intent-filter>

        </activity>