android.nfc.NfcAdapter#isEnabled

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;
}

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);
    }
}

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;
}

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();
        }
    }
}

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();
        }
    }
}

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);
}

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);
	}

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);
	}

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);
        }
    }
}

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);
    }
}

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()}});
    }
}

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()}});
    }
}

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);
    }

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);
}

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;
}

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()}});
    }
}

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;
    }
}

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);
}

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();
}

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();
}

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