Example usage for android.nfc.tech Ndef canMakeReadOnly

Introduction

In this page you can find the example usage for android.nfc.tech Ndef canMakeReadOnly.

Prototype

public boolean canMakeReadOnly() 

Source Link

Document

Indicates whether a tag can be made read-only with #makeReadOnly() .

Usage

From source file:Main.java

static JSONObject ndefToJSON(Ndef ndef) {
    JSONObject json = new JSONObject();

    if (ndef != null) {
        try {/*  w w w .  j av a2  s .  c  om*/

            Tag tag = ndef.getTag();
            // tag is going to be null for NDEF_FORMATABLE until NfcUtil.parseMessage is refactored
            if (tag != null) {
                json.put("id", byteArrayToJSON(tag.getId()));
                json.put("techTypes", new JSONArray(Arrays.asList(tag.getTechList())));
            }

            json.put("type", translateType(ndef.getType()));
            json.put("maxSize", ndef.getMaxSize());
            json.put("isWritable", ndef.isWritable());
            json.put("ndefMessage", messageToJSON(ndef.getCachedNdefMessage()));
            // Workaround for bug in ICS (Android 4.0 and 4.0.1) where
            // mTag.getTagService(); of the Ndef object sometimes returns null
            // see http://issues.mroland.at/index.php?do=details&task_id=47
            try {
                json.put("canMakeReadOnly", ndef.canMakeReadOnly());
            } catch (NullPointerException e) {
                json.put("canMakeReadOnly", JSONObject.NULL);
            }
        } catch (JSONException e) {
            Log.e(TAG, "Failed to convert ndef into json: " + ndef.toString(), e);
        }
    }
    return json;
}

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From source file:com.hybris.mobile.activity.NFCWriteActivity.java

@Override
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);

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

    // default failed
    setResult(RESULT_CANCELED);// w w w  . j  a v  a  2  s .c  o  m

    if (NFCUtil.supportsNdef(tag)) {
        Ndef ndef = Ndef.get(tag);

        try {
            int maxSize = ndef.getMaxSize();
            int messageSize = this.msg.toByteArray().length;

            if (ndef.isWritable() && maxSize > messageSize) {
                ndef.connect();
                ndef.writeNdefMessage(this.msg);

                if (getResources().getBoolean(R.bool.nfc_read_only)) {
                    if (ndef.canMakeReadOnly()) {
                        boolean success = ndef.makeReadOnly();
                        if (!success)
                            Toast.makeText(this, "Unable to make tag readonly!", Toast.LENGTH_LONG).show();
                        else
                            Toast.makeText(this, "Tag is now readonly!", Toast.LENGTH_LONG).show();
                    } else {
                        Toast.makeText(this, "This tag cannot be made readonly!", Toast.LENGTH_LONG).show();
                    }
                }

                setResult(RESULT_OK);
                showDialogFragmentWithMessage(R.string.nfc_tag_written);
            } else {
                showDialogFragmentWithMessage(R.string.error_nfc_readonly_size);
            }
        } catch (IOException e) {
            LoggingUtils.e(LOG_CAT, getString(R.string.error_nfc_io), e, Hybris.getAppContext());

        } catch (FormatException e) {
            LoggingUtils.e(LOG_CAT, getString(R.string.error_nfc_format), e, Hybris.getAppContext());
        } finally {
            try {
                ndef.close();
            } catch (IOException e) {
            }
        }

    } else if (NFCUtil.supportsNdefFormatable(tag)) {
        NdefFormatable ndefFormatable = NdefFormatable.get(tag);

        try {
            ndefFormatable.connect();

            if (getResources().getBoolean(R.bool.nfc_read_only)) {
                ndefFormatable.formatReadOnly(this.msg);
            } else {
                ndefFormatable.format(this.msg);
            }

            setResult(RESULT_OK);
            showDialogFragmentWithMessage(R.string.nfc_tag_written);
        } catch (IOException e) {
            LoggingUtils.e(LOG_CAT, getString(R.string.error_nfc_io), e, Hybris.getAppContext());
        } catch (FormatException e) {
            LoggingUtils.e(LOG_CAT, getString(R.string.error_nfc_format), e, Hybris.getAppContext());
        } finally {
            try {
                ndefFormatable.close();
            } catch (IOException e) {
            }
        }

    } else {
        showDialogFragmentWithMessage(R.string.error_nfc_no_ndef);
    }

}

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