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...

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Java Source Code

package bus.ticketer.inspector;
/*from   ww  w  .j a  v  a 2s  . c  o  m*/
import java.util.ArrayList;

import org.json.JSONArray;
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.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Parcelable;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.nfc.*;
import android.widget.Toast;

public class MainActivity extends Activity {
  public NfcAdapter mNfcAdapter;
  public String IPAddress;
  private RESTFunction currentFunction;
  private BusInspector app;
  private Context context;
  
  @SuppressLint("HandlerLeak")
  private Handler threadConnectionHandler = new Handler(){
    @Override
    public void handleMessage(Message msg) {
      switch(currentFunction) {
        case GET_VALIDATED_TICKETS:
          JSONObject object = (JSONObject) msg.obj;
          JSONArray list = null;
          try {
            list = object.getJSONArray("list");
          } catch (JSONException e) {
            e.printStackTrace();
          }
          parseArray(list);
          Intent intent = new Intent(context, ScanActivity.class);
          context.startActivity(intent);
          ((Activity) context).finish();
          break;
        default:
          break;
      }
    }
  };
  
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        app = (BusInspector) getApplicationContext();
        IPAddress = app.IPAddress;
        mNfcAdapter = NfcAdapter.getDefaultAdapter(this);
        
        if (mNfcAdapter == null)
          Toast.makeText(this, "You have no NFC, please try with another device that has NFC!", Toast.LENGTH_SHORT).show();
        
        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);
  }

  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;
    
    currentFunction = RESTFunction.GET_VALIDATED_TICKETS;
    String busId = id;
      ConnectionThread dataThread = new ConnectionThread(IPAddress + "/validated/"+busId, Method.GET, null, threadConnectionHandler, null);
    dataThread.start();
  }
  
  private void parseArray(JSONArray list) {
    ArrayList<Integer> tickets = new ArrayList<Integer>();
    for(int i = 0; i < list.length(); i++) {
      try {
        tickets.add((Integer) list.get(i));
      } catch (JSONException e) {
        e.printStackTrace();
      }
    }
    app.saveTicketList(tickets);
  }
}

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