Android Open Source - BusTicketer Main Activity

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License

The source code is released under:

Copyright (c) 2013, Nelspike All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Red...

Java Source Code

package bus.ticketer.validation;
/*  www.j  a v  a 2 s.  co  m*/
import java.util.ArrayList;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;

import bus.ticketer.connection.ConnectionThread;
import bus.ticketer.utils.Method;
import bus.ticketer.utils.RESTFunction;
import android.nfc.NdefMessage;
import android.nfc.NdefRecord;
import android.nfc.NfcAdapter;
import android.nfc.NfcAdapter.CreateNdefMessageCallback;
import android.nfc.NfcAdapter.OnNdefPushCompleteCallback;
import android.nfc.NfcEvent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Parcelable;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.DialogInterface.OnDismissListener;
import android.widget.Toast;

public class MainActivity extends Activity implements CreateNdefMessageCallback, OnNdefPushCompleteCallback {

  private NfcAdapter myNFC;
  private RESTFunction currentFunction;
  private int busID = 1;
    private String IPAddress = "http://192.168.178.24:81/";
  private boolean status = false;
  private Context context;
  private final int MESSAGE_SENT = 1;
  
  @SuppressLint("HandlerLeak")
  private Handler mHandler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
      switch(msg.what) {
        case MESSAGE_SENT:
          ((Activity) context).recreate();
          break;
      }
    }
  };
  
  @SuppressLint("HandlerLeak")
  private Handler threadConnectionHandler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
      switch (currentFunction) {
        case VALIDATE_TICKET:
          try {
            status = new JSONObject(msg.obj.toString()).getBoolean("status");
          } catch (JSONException e) {
            e.printStackTrace();
          }
          break;
        default:
          break;
      }
    }
  };
  
  @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
    myNFC = NfcAdapter.getDefaultAdapter(this);
    if(myNFC == null) {
      Toast.makeText(this, "You have no NFC, please try with another device that has NFC!", Toast.LENGTH_SHORT).show();
    }
    
    myNFC.setNdefPushMessageCallback(this, this);
    myNFC.setOnNdefPushCompleteCallback(this, this);
    context = this;
    }

  @Override
  public void onResume() {
    super.onResume();
    if(NfcAdapter.ACTION_NDEF_DISCOVERED.equals(getIntent().getAction())) {
      processIntent(getIntent());
    }
  }
  
  @Override
  public void onNewIntent(Intent intent) {
    setIntent(intent);
  }
  
  @SuppressLint("ShowToast")
  private void processIntent(Intent intent) {
    Parcelable[] rawMsgs = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
    
    NdefMessage msg = (NdefMessage) rawMsgs[0];
    String payload = new String(msg.getRecords()[0].getPayload());
    
    //String is: ID:x
    String id = payload.split("-")[0].split(":")[1];
    
    if(id.equals("-1"))
      return;
    
    ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();
    params.add(new BasicNameValuePair("tid", id));
    params.add(new BasicNameValuePair("bid", busID+""));
    
    ProgressDialog progDialog = ProgressDialog.show(this,
        "", "Validating ticket..",
        true);
    
    progDialog.setOnDismissListener(new OnDismissListener() {

      @Override
      public void onDismiss(DialogInterface dialog) {
        Intent intent = new Intent(context, ResultActivity.class);
        intent.putExtra("status", status);
        context.startActivity(intent);
      }
    });
    
    currentFunction = RESTFunction.VALIDATE_TICKET;
    ConnectionThread dataThread = new ConnectionThread(
        IPAddress+"validate/", Method.POST,
        params, threadConnectionHandler, progDialog);
    
    dataThread.start();
  }


  @Override
  public void onNdefPushComplete(NfcEvent event) {
    mHandler.obtainMessage(MESSAGE_SENT).sendToTarget();
  }


  @Override
  public NdefMessage createNdefMessage(NfcEvent arg0) {
    String test = "Bus:"+busID;
        
    NdefMessage msg = new NdefMessage(new NdefRecord[] {
      NdefRecord.createMime("application/bus.ticketer.message", test.getBytes())
    });
    return msg;
  }
    
}

Java Source Code List

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