如何以编程方式获取Android程序的信息或nfc id？

PackageManager packageManager = getPackageManager();
String packageName = getPackageName();

try {
    PackageInfo packageInfo = packageManager.getPackageInfo(packageName, 0);
    String versionName = packageInfo.versionName;
    int versionCode = packageInfo.versionCode;
    String appName = packageManager.getApplicationLabel(packageInfo.applicationInfo).toString();
    // 其他应用程序信息的获取
} catch (PackageManager.NameNotFoundException e) {
    e.printStackTrace();
}

public class MainActivity extends AppCompatActivity {
    private NfcAdapter nfcAdapter;

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

        nfcAdapter = NfcAdapter.getDefaultAdapter(this);
        if (nfcAdapter == null) {
            // 设备不支持NFC
            return;
        }

        if (!nfcAdapter.isEnabled()) {
            // NFC功能未启用
            return;
        }

        IntentFilter intentFilter = new IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED);
        try {
            intentFilter.addDataType("text/plain");
        } catch (IntentFilter.MalformedMimeTypeException e) {
            e.printStackTrace();
        }

        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
                new Intent(this, getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);

        IntentFilter[] intentFiltersArray = new IntentFilter[]{intentFilter};
        String[][] techListsArray = new String[][]{{NfcA.class.getName()}, {NfcB.class.getName()}};

        nfcAdapter.enableForegroundDispatch(this, pendingIntent, intentFiltersArray, techListsArray);
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (nfcAdapter != null) {
            nfcAdapter.enableForegroundDispatch(this, pendingIntent, intentFiltersArray, techListsArray);
        }
    }

    @Override
    protected void onPause() {
        super.onPause();
        if (nfcAdapter != null) {
            nfcAdapter.disableForegroundDispatch(this);
        }
    }

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(intent.getAction())) {
            Parcelable[] rawMessages = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
            if (rawMessages != null) {
                NdefMessage[] messages = new NdefMessage[rawMessages.length];
                for (int i = 0; i < rawMessages.length; i++) {
                    messages[i] = (NdefMessage) rawMessages[i];
                }
                // 处理NFC标签读取事件
                // 可以从NdefMessage中获取NFC标签的ID等信息
            }
        }
    }
}