NFC sample(read IDm)

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="test.nfc"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-permission android:name="android.permission.NFC" />

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="15" />

    <uses-feature
        android:name="android.hardware.nfc"
        android:required="true" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:theme="@android:style/Theme.Holo.NoActionBar"
            android:name=".MainActivity"
            android:label="@string/title_activity_main"
            android:launchMode="singleInstance" >

            <intent-filter>
                <action android:name="android.nfc.action.TAG_DISCOVERED" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>

        </activity>
    </application>

</manifest>

MainActivity.java

package test.nfc;

import android.app.Activity;
import android.app.PendingIntent;
import android.content.Intent;
import android.content.IntentFilter;
import android.nfc.NfcAdapter;
import android.nfc.tech.IsoDep;
import android.nfc.tech.MifareClassic;
import android.nfc.tech.MifareUltralight;
import android.nfc.tech.NdefFormatable;
import android.nfc.tech.NfcA;
import android.nfc.tech.NfcB;
import android.nfc.tech.NfcF;
import android.nfc.tech.NfcV;
import android.os.Bundle;
import android.widget.Toast;

public class MainActivity extends Activity {

    private static final String TAG = MainActivity.class.getSimpleName();
    private NfcAdapter adapter;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        adapter = NfcAdapter.getDefaultAdapter(getApplicationContext());

        analyzeIntent(getIntent());
    }

    @Override
    protected void onNewIntent(Intent intent) {
        analyzeIntent(intent);
    }

    private void analyzeIntent(Intent intent) {
        // IDm取得
        String text = getIdm(intent);
        Toast.makeText(getApplicationContext(), text, Toast.LENGTH_SHORT).show();
    }

    @Override
    protected void onResume() {
        super.onResume();
        registerNfcFilter();
    }

    @Override
    protected void onPause() {
        super.onPause();
        unregisterNfcFilter();
    }

    private void registerNfcFilter() {
        Intent intent = new Intent(this, getClass());
        PendingIntent pendingIntent = PendingIntent.getActivity(
                getApplicationContext(), 0, intent, 0);
        adapter.enableForegroundDispatch(this, pendingIntent, filters, techLists);
    }

    private void unregisterNfcFilter() {
        adapter.disableForegroundDispatch(this);
    }

    private static final IntentFilter[] filters = new IntentFilter[] {
        new IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED),
        new IntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED),
        new IntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED)
    };

    private static final String[][] techLists = new String[][] {{
        NfcA.class.getName(),
        NfcB.class.getName(),
        IsoDep.class.getName(),
        MifareClassic.class.getName(),
        MifareUltralight.class.getName(),
        NdefFormatable.class.getName(),
        NfcV.class.getName(),
        NfcF.class.getName()
    }};

    private static String getIdm(Intent intent) {
        StringBuilder idm = new StringBuilder();
        byte[] rawId = intent.getByteArrayExtra(NfcAdapter.EXTRA_ID);
        for (int i = 0; i < rawId.length; i++) {
            idm.append(String.format("%02x", rawId[i] & 0xff));
        }
        return idm.toString();
    }
}