Java Code Examples for android.nfc.NfcAdapter#isEnabled()

The following examples show how to use android.nfc.NfcAdapter#isEnabled() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: NetWorkInfo.java From MobileInfo with Apache License 2.0

6 votes

private static boolean hasNfc(Context context) {
    boolean bRet = false;
    if (context == null) {
        return false;
    }
    NfcManager manager = (NfcManager) context.getSystemService(Context.NFC_SERVICE);
    if (manager == null) {
        return false;
    }
    NfcAdapter adapter = manager.getDefaultAdapter();
    if (adapter != null && adapter.isEnabled()) {
        // adapter存在，能启用
        bRet = true;
    }
    return bRet;
}

Example 2

Source File: MainActivity.java From LecteurOPUS with GNU General Public License v3.0

6 votes

private void enableReaderMode() {
    Log.i(TAG, "Enabling reader mode");
    Activity activity = this;
    NfcAdapter nfc = NfcAdapter.getDefaultAdapter(activity);
    if (!nfc.isEnabled()) {
        AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create();
        alertDialog.setTitle(getString(R.string.disable_title));
        alertDialog.setMessage(getString(R.string.nfc_disable));
        alertDialog.setButton(AlertDialog.BUTTON_NEUTRAL, "OK",
                new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                        startActivity(new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS));

                    }
                });
        alertDialog.show();
    }
    else if (nfc != null) {
        nfc.enableReaderMode(activity, mCardReader, FLAG_MIFARE | FLAG_OPUS, null);
    }
}

Example 3

Source File: RNHceModule.java From react-native-nfc-hce with Apache License 2.0

6 votes

private WritableMap supportNFC() {
    NfcManager manager = (NfcManager) this.reactContext.getSystemService(this.reactContext.NFC_SERVICE);
    NfcAdapter adapter = manager.getDefaultAdapter();
    WritableMap map = Arguments.createMap();
    if (adapter != null) {
        map.putBoolean("support", true);
        if (adapter.isEnabled()) {
            map.putBoolean("enabled", true);
        } else {
            map.putBoolean("enabled", false);
        }
    } else {
        map.putBoolean("support", false);
        map.putBoolean("enabled", false);
    }

    return map;
}

Example 4

Source File: NfcDeviceFragment.java From ESeal with Apache License 2.0

6 votes

private void enableNfcReaderMode() {
    NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(getActivity());
    if (nfcAdapter != null) {
        if (nfcAdapter.isEnabled()) {
            nfcAdapter.enableReaderMode(getActivity(), mNfcUtility, NfcUtility.NFC_TAG_FLAGS, null);
            showSnackbar(getString(R.string.text_hint_close_to_nfc_tag));
        } else {
            Snackbar snackbar = Snackbar.make(foldingCellLock, getString(R.string.error_nfc_not_open), Snackbar.LENGTH_SHORT)
                    .setAction(getString(R.string.text_hint_open_nfc), new View.OnClickListener() {
                        @Override
                        public void onClick(View view) {
                            Intent intent = new Intent(Settings.ACTION_NFC_SETTINGS);
                            startActivity(intent);
                        }
                    });
            ((TextView) (snackbar.getView().findViewById(R.id.snackbar_text))).setTextColor(ContextCompat.getColor(getContext(), R.color.blue_grey_100));
            snackbar.show();
        }
    }
}

Example 5

Source File: DeviceOperationActivity.java From ESeal with Apache License 2.0

6 votes

private void enableNfcReaderMode() {
    NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
    if (nfcAdapter != null) {
        if (nfcAdapter.isEnabled()) {
            nfcAdapter.enableReaderMode(this, mNfcUtility, NfcUtility.NFC_TAG_FLAGS, null);
            showSnackbar(getString(R.string.text_hint_close_to_nfc_tag));
        } else {
            Snackbar snackbar = Snackbar.make(cardSetting, getString(R.string.error_nfc_not_open), Snackbar.LENGTH_SHORT)
                    .setAction(getString(R.string.text_hint_open_nfc), new View.OnClickListener() {
                        @Override
                        public void onClick(View view) {
                            Intent intent = new Intent(Settings.ACTION_NFC_SETTINGS);
                            startActivity(intent);
                        }
                    });
            ((TextView) (snackbar.getView().findViewById(R.id.snackbar_text))).setTextColor(ContextCompat.getColor(DeviceOperationActivity.this, R.color.blue_grey_100));
            snackbar.show();
        }
    }
}

Example 6

Source File: RepoDetailsActivity.java From fdroidclient with GNU General Public License v3.0

6 votes

@TargetApi(16)
private void prepareNfcMenuItems(Menu menu) {
    NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
    MenuItem menuItem = menu.findItem(R.id.menu_enable_nfc);

    if (nfcAdapter == null) {
        menuItem.setVisible(false);
        return;
    }

    boolean needsEnableNfcMenuItem;
    if (Build.VERSION.SDK_INT < 16) {
        needsEnableNfcMenuItem = !nfcAdapter.isEnabled();
    } else {
        needsEnableNfcMenuItem = !nfcAdapter.isNdefPushEnabled();
    }

    menuItem.setVisible(needsEnableNfcMenuItem);
}

Example 7

Source File: MainPage.java From NFCard with GNU General Public License v3.0

6 votes

public static CharSequence getContent(Activity activity) {

		final NfcAdapter nfc = NfcAdapter.getDefaultAdapter(activity);
		final int resid;

		if (nfc == null)
			resid = R.string.info_nfc_notsupport;
		else if (!nfc.isEnabled())
			resid = R.string.info_nfc_disabled;
		else
			resid = R.string.info_nfc_nocard;

		String tip = ThisApplication.getStringResource(resid);

		return new SpanFormatter(new Handler(activity)).toSpanned(tip);
	}

Example 8

Source File: MainPage.java From nfcard with GNU General Public License v3.0

6 votes

public static CharSequence getContent(Activity activity) {

		final NfcAdapter nfc = NfcAdapter.getDefaultAdapter(activity);
		final int resid;

		if (nfc == null)
			resid = R.string.info_nfc_notsupport;
		else if (!nfc.isEnabled())
			resid = R.string.info_nfc_disabled;
		else
			resid = R.string.info_nfc_nocard;

		String tip = ThisApplication.getStringResource(resid);

		return new SpanFormatter(new Handler(activity)).toSpanned(tip);
	}

Example 9

Source File: LyricsViewFragment.java From QuickLyric with GNU General Public License v3.0

6 votes

@TargetApi(16)
private void beamLyrics(final Lyrics lyrics, Activity activity) {
    NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(activity);
    if (nfcAdapter != null && nfcAdapter.isEnabled()) {
        if (lyrics.getText() != null) {
            nfcAdapter.setNdefPushMessageCallback(event -> {
                try {
                    byte[] payload = lyrics.toBytes(); // whatever data you want to send
                    NdefRecord record = new NdefRecord(NdefRecord.TNF_MIME_MEDIA, "application/lyrics".getBytes(), new byte[0], payload);
                    return new NdefMessage(new NdefRecord[]{
                            record, // your data
                            NdefRecord.createApplicationRecord("com.geecko.QuickLyric"), // the "application record"
                    });
                } catch (IOException e) {
                    return null;
                }
            }, activity);
        }
    }
}

Example 10

Source File: NfcNotEnabledActivity.java From fdroidclient with GNU General Public License v3.0

5 votes

@TargetApi(16)
private void doOnJellybean(Intent intent) {
    NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
    if (nfcAdapter == null) {
        return;
    }
    if (nfcAdapter.isEnabled()) {
        intent.setAction(Settings.ACTION_NFCSHARING_SETTINGS);
    } else {
        intent.setAction(Settings.ACTION_NFC_SETTINGS);
    }
}

Example 11

Source File: TagDispatcher.java From WalletCordova with GNU Lesser General Public License v2.1

5 votes

private void enableForegroundDispatch(NfcAdapter adapter, Intent intent) {
    if(adapter.isEnabled()) {
        PendingIntent tagIntent = PendingIntent.getActivity(activity, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
        IntentFilter tag = new IntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED);

        adapter.enableForegroundDispatch(activity, tagIntent, new IntentFilter[]{tag},
                                         new String[][]{new String[]{IsoDep.class.getName()}});
    }
}

Example 12

Source File: TagDispatcher.java From nordpol with MIT License

5 votes

private void enableForegroundDispatch(NfcAdapter adapter, Intent intent) {
    if(adapter.isEnabled()) {
        PendingIntent tagIntent = PendingIntent.getActivity(activity, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
        IntentFilter tag = new IntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED);
        adapter.enableForegroundDispatch(activity, tagIntent, new IntentFilter[]{tag},
                                         new String[][]{new String[]{IsoDep.class.getName()}});
    }
}

Example 13

Source File: NFCTagPreferenceX.java From PhoneProfilesPlus with Apache License 2.0

5 votes

void writeToNFCTag(long id, String tag) {

        NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(prefContext);
        if (!nfcAdapter.isEnabled()) {
            AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(prefContext);
            dialogBuilder.setTitle(R.string.nfc_tag_pref_dlg_menu_writeToNfcTag);
            dialogBuilder.setMessage(R.string.nfc_tag_pref_dlg_writeToNfcTag_nfcNotEnabled);
            dialogBuilder.setPositiveButton(android.R.string.ok, null);
            AlertDialog dialog = dialogBuilder.create();

//            dialog.setOnShowListener(new DialogInterface.OnShowListener() {
//                @Override
//                public void onShow(DialogInterface dialog) {
//                    Button positive = ((AlertDialog)dialog).getButton(DialogInterface.BUTTON_POSITIVE);
//                    if (positive != null) positive.setAllCaps(false);
//                    Button negative = ((AlertDialog)dialog).getButton(DialogInterface.BUTTON_NEGATIVE);
//                    if (negative != null) negative.setAllCaps(false);
//                }
//            });

            if (fragment.getActivity() != null)
                if (!fragment.getActivity().isFinishing())
                    dialog.show();
            return;
        }

        Intent nfcTagIntent = new Intent(prefContext.getApplicationContext(), NFCTagWriteActivity.class);
        nfcTagIntent.putExtra(NFCTagWriteActivity.EXTRA_TAG_NAME, tag);
        nfcTagIntent.putExtra(NFCTagWriteActivity.EXTRA_TAG_DB_ID, id);
        ((Activity) prefContext).startActivityForResult(nfcTagIntent, RESULT_NFC_TAG_WRITE);
    }

Example 14

Source File: PayActivity.java From HandstandPay with GNU General Public License v2.0

5 votes

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    if (id == R.id.set_as_default) {
        DefaultPaymentAppUtil.ensureSetAsDefaultPaymentApp(PayActivity.this);
        return true;
    } else if (id == R.id.play_animation) {
        LocalBroadcastManager.getInstance(PayActivity.this).sendBroadcast(new Intent(HandstandApduService.PAYMENT_SENT));
        return true;
    } else if (id == R.id.edit_magstripe) {
        startEditMagstripeActivity();
        return true;
    } else if (id == R.id.nfc_settings) {
        NfcAdapter mNfcAdapter = NfcAdapter.getDefaultAdapter(PayActivity.this);

        //Tell the user whether NFC is enabled
        String message = "NFC is enabled: " + mNfcAdapter.isEnabled();
        Toast.makeText(PayActivity.this, message, Toast.LENGTH_SHORT).show();

        //Show the settings regardless of whether it is enabled or not
        Intent intent = new Intent(Settings.ACTION_NFC_SETTINGS);
        startActivity(intent);
    }

    return super.onOptionsItemSelected(item);
}

Example 15

Source File: HostConnectionProfile.java From DeviceConnect-Android with MIT License

5 votes

@Override
public boolean onRequest(final Intent request, final Intent response) {
    NfcAdapter adapter = NfcAdapter.getDefaultAdapter(getContext());
    if (adapter != null) {
        if (adapter.isEnabled()) {
            response.putExtra(PARAM_ENABLE, true);
        } else {
            response.putExtra(PARAM_ENABLE, false);
        }
    } else {
        response.putExtra(PARAM_ENABLE, false);
    }
    setResult(response, IntentDConnectMessage.RESULT_OK);
    return true;
}

Example 16

Source File: TagDispatcher.java From GreenBits with GNU General Public License v3.0

5 votes

private void enableForegroundDispatch(NfcAdapter adapter, Intent intent) {
    if(adapter.isEnabled()) {
        PendingIntent tagIntent = PendingIntent.getActivity(activity, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
        IntentFilter tag = new IntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED);

        adapter.enableForegroundDispatch(activity, tagIntent, new IntentFilter[]{tag},
                                         new String[][]{new String[]{IsoDep.class.getName()}});
    }
}

Example 17

Source File: DeviceStatusUtil.java From under-the-hood with Apache License 2.0

5 votes

/**
 * Current NFC hardware state. Needs correct permission to work.
 *
 * @param context
 * @return state
 */
//@RequiresPermission(Manifest.permission.NFC)
public static Status getNfcState(Context context) {
    NfcManager nfcManager = (NfcManager) context.getSystemService(Context.NFC_SERVICE);
    NfcAdapter adapter = nfcManager.getDefaultAdapter();
    if (adapter == null) {
        return Status.UNSUPPORTED;
    } else if (ContextCompat.checkSelfPermission(context, Manifest.permission.NFC) != PackageManager.PERMISSION_GRANTED) {
        return Status.NEEDS_PERMISSION;
    } else if (adapter.isEnabled()) {
        return Status.ENABLED;
    } else {
        return Status.DISABLED;
    }
}

Example 18

Source File: NfcIconData.java From Status with Apache License 2.0

5 votes

@Override
public void register() {
    super.register();

    NfcAdapter adapter = manager.getDefaultAdapter();
    if (adapter != null && adapter.isEnabled())
        onIconUpdate(0);
}

Example 19

Source File: NfcHandler.java From PowerSwitch_Android with GNU General Public License v3.0

2 votes

/**
 * Checks if NFC is supported by the device
 *
 * @param context any suitable context
 * @return true if NFC is supported, false otherwise
 */
public static boolean isNfcEnabled(Context context) {
    NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(context);
    return nfcAdapter.isEnabled();
}

Example 20

Source File: SettingsInfo.java From batteryhub with Apache License 2.0

2 votes

/**
 * Checks if NFC is enabled on the device
 *
 * @return True if NFC is enabled
 */
public static boolean isNfcEnabled(final Context context) {
    NfcAdapter adapter = NfcAdapter.getDefaultAdapter(context);
    return adapter != null && adapter.isEnabled();
}