Android Open Source - droidNFCdemo Main Activity

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Back to project page droidNFCdemo.

License

The source code is released under:

MIT License

Java Source Code

package me.davidvassallo.nfc;
/*  www.ja  va2  s.  com*/
import android.app.Activity;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.IntentFilter.MalformedMimeTypeException;
import android.nfc.NfcAdapter;
import android.nfc.Tag;
import android.nfc.tech.NfcA;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.widget.Toast;

public class MainActivity extends Activity {
  NfcAdapter mAdapter;
  IntentFilter[] mFilters;
  PendingIntent mPendingIntent;
  
  void resolveIntent(Intent intent) {
    Context context = getApplicationContext();
    int duration = Toast.LENGTH_LONG;
    
        // 1) Parse the intent and get the action that triggered this intent
        String action = intent.getAction();
        // 2) Check if it was triggered by a tag discovered interruption.
        if (NfcAdapter.ACTION_TECH_DISCOVERED.equals(action)) {
            //  3) Get an instance of the TAG from the NfcAdapter
            Tag tagFromIntent = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
            byte[] extraID = tagFromIntent.getId();
            
            StringBuilder sb = new StringBuilder();
            for (byte b : extraID) {
                sb.append(String.format("%02X", b));
            };

      String tagID = sb.toString();
      Log.e("nfc ID", tagID);

            String name;
            
            if (tagID.equals("6B9FCB35")){
              
                name = "David Vassallo";
            }
            else if (tagID.equals("0BCDD135")){
              
            name = "Kevin Ellul";
            
            }
            else if (tagID.equals("9B93C435")){
              
            name = "Guest 013";
            
            } 
            else if (tagID.equals("3B348073")){
              
            name = "Guest 007";
            
            } else {
              
              name ="Unknown";
            }
            
            
            Toast toast = Toast.makeText(context, name, duration);
            toast.show();  
            
         };
    }// End of method
  
  
      // Setup a tech list for all NfcF tags
    String[][] mTechLists = new String[][] { new String[] { NfcA.class.getName() } };
    Intent intent = getIntent();
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    mPendingIntent = PendingIntent.getActivity(this, 0,
              new Intent(this, getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);
    
    IntentFilter ndef1 = new IntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED);
    //IntentFilter ndef2 = new IntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED);
    mFilters = new IntentFilter[] {
              ndef1,
              //ndef2,
      };
    
        try {
            ndef1.addDataType("*/*");
            //ndef2.addDataType("*/*");
        } catch (MalformedMimeTypeException e) {
            throw new RuntimeException("fail", e);
        }
        mAdapter = NfcAdapter.getDefaultAdapter(this);
        
        if (getIntent() != null){
          resolveIntent(getIntent());
        }
         
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }
  
  @Override
    public void onResume() {
        super.onResume();
        mAdapter.enableForegroundDispatch(this, mPendingIntent, mFilters, mTechLists);
    }

    @Override
    public void onNewIntent(Intent intent) {
        Log.i("Foreground dispatch", "Discovered tag with intent: " + intent);
        resolveIntent(intent);            
    }

    @Override
    public void onPause() {
        super.onPause();
        mAdapter.disableForegroundDispatch(this);
    }
    

}

Java Source Code List

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