android.nfc.NfcManager Java Examples

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;
}
 

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;
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  // Get the NFC Adapter.
  NfcManager nfcManager = (NfcManager)getSystemService(Context.NFC_SERVICE);
  mNFCAdapter = nfcManager.getDefaultAdapter();

  // Create the Pending Intent.
  int flags = 0;
  Intent nfcIntent = new Intent(this, getClass());
  nfcIntent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
  mNFCPendingIntent =
    PendingIntent.getActivity(this, NFC_REQUEST_CODE, nfcIntent, flags);

  // Create an Intent Filter limited to the URI or MIME type to
  // intercept TAG scans from.
  IntentFilter tagIntentFilter =
    new IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED);
  tagIntentFilter.addDataScheme("http");
  tagIntentFilter.addDataAuthority("blog.radioactiveyak.com", null);
  mIntentFiltersArray = new IntentFilter[] { tagIntentFilter };

  // Create an array of technologies to handle.
  mTechListsArray = new String[][] {
    new String[] {
      NfcF.class.getName()
    }
  };

  // Process the Intent used to start the Activity/
  String action = getIntent().getAction();
  if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(action))
    processIntent(getIntent());
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    setTheme(R.style.AppTheme);
    super.onCreate(savedInstanceState);

    mRealmRawData = Realm.getInstance(realmConfigRawData);
    mRealmProcessedData = Realm.getInstance(realmConfigProcessedData);
    setContentView(R.layout.activity_main);

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    // Create the adapter that will return a fragment for each of the
    // primary sections of the activity.
    mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager(), getApplicationContext());

    // Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.view_pager);
    mViewPager.setAdapter(mSectionsPagerAdapter);

    TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
    tabLayout.setupWithViewPager(mViewPager);

    mNfcAdapter = ((NfcManager) this.getSystemService(Context.NFC_SERVICE)).getDefaultAdapter();
    if (mNfcAdapter != null) {
        Log.d(LOG_ID, "Got NFC adapter");
        if (!mNfcAdapter.isEnabled()) {
            Toast.makeText(this, getResources().getString(R.string.error_nfc_disabled), Toast.LENGTH_LONG).show();
        }
    } else {
        Log.e(LOG_ID,"No NFC adapter found!");
        Toast.makeText(this, getResources().getString(R.string.error_nfc_device_not_supported), Toast.LENGTH_LONG).show();
    }
}
 

/**
 * 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;
    }
}
 

/**
 * Updates the NFC Status
 */
@TargetApi(Build.VERSION_CODES.GINGERBREAD_MR1)
private void updateNFCStatusDisplay() {
    final NfcManager nfcManager = (NfcManager) getActivity().getSystemService(Context.NFC_SERVICE);
    final NfcAdapter adapter = nfcManager.getDefaultAdapter();
    nfc.setText(Boolean.toString(adapter != null && adapter.isEnabled()));
}
 

public Object createService(ContextImpl ctx) {
    return new NfcManager(ctx);
}
 

public Object createService(ContextImpl ctx) {
    return new NfcManager(ctx);
}
 

public Object createService(ContextImpl ctx) {
    return new NfcManager(ctx);
}
 

public Object createService(ContextImpl ctx) {
    return new NfcManager(ctx);
}
 

public Object createService(ContextImpl ctx) {
    return new NfcManager(ctx);
}
 

public Object createService(ContextImpl ctx) {
    return new NfcManager(ctx);
}
 

public Object createService(ContextImpl ctx) {
    return new NfcManager(ctx);
}
 

@Override
public NfcManager createService(ContextImpl ctx) {
    return new NfcManager(ctx);
}
 

@TargetApi(10)
public static NfcManager getNfcManager() {
    return (NfcManager) getSystemService(Context.NFC_SERVICE);
}
 

public NfcIconData(Context context) {
    super(context);
    manager = (NfcManager) context.getSystemService(Context.NFC_SERVICE);
}