Android Open Source - sodf Factory Activity

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License

The source code is released under:

Copyright (c) 2013 Lorenz Lehmann Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Sof...

Java Source Code

package lal.apps.smartfoodenvironment.activities;
//ww w  . j  a  v a 2 s . c  o m
import lal.apps.smartfoodenvironment.R;
import lal.apps.smartfoodenvironment.model.ProductFactory;
import lal.sodf.framework.SodfCallback;
import lal.sodf.framework.SodfFramework;
import lal.sodf.framework.SodfWrapper;
import lal.sodf.framework.ontology.SodfTree;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.PendingIntent;
import android.content.DialogInterface;
import android.content.Intent;
import android.nfc.NfcAdapter;
import android.nfc.Tag;
import android.os.Bundle;
import android.os.Handler;
import android.view.Menu;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

public class FactoryActivity extends Activity implements SodfCallback{
  
  private SodfTree writeData = null;
  private boolean writeOnTap = false;
  private Handler handler;
  private PendingIntent pendingIntent;
  private AlertDialog dialog;
  private FactoryActivity self;
  private TextView name;
  private TextView microwave;
  private TextView expiresAfter;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_factory);
    self = this;
    handler = new Handler();
    pendingIntent = PendingIntent.getActivity(this, 0, new Intent(this, getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);
    //set the view references
    name = (TextView) findViewById(R.id.factory_prodName);
    microwave = (TextView) findViewById(R.id.factory_prodMicrowave);
    expiresAfter = (TextView) findViewById(R.id.factory_expiresAfter);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.activity_start, menu);
    return true;
  }
  
  /** The user tapped on the image for milk */
  public void milkSelected(View v){
    //load the object to write
    writeData = ProductFactory.getMilk();
    //set the data to display
    name.setVisibility(View.VISIBLE);
    name.setText(getString(R.string.factory_productName, "Milk"));
    microwave.setVisibility(View.VISIBLE);
    microwave.setText(getString(R.string.factory_productMicrowave, "No"));
    expiresAfter.setVisibility(View.VISIBLE);
    expiresAfter.setText(getString(R.string.factory_expiresAfter, 2));
  }
  
  /** The user tapped on the image for Nutella */
  public void nutellaSelected(View v){
    //load the object to write
    writeData = ProductFactory.getNutella();
    name.setVisibility(View.VISIBLE);
    name.setText(getString(R.string.factory_productName, "Nutella"));
    microwave.setVisibility(View.VISIBLE);
    microwave.setText(getString(R.string.factory_productMicrowave, "No"));
    expiresAfter.setVisibility(View.VISIBLE);
    expiresAfter.setText(getString(R.string.factory_expiresAfter, 30));
  }
  
  /** The user tapped on the image for popcorn */
  public void popcornSelected(View v){
    //load the object to write
    writeData = ProductFactory.getPopcorn();
    //set the data to display
    name.setVisibility(View.VISIBLE);
    name.setText(getString(R.string.factory_productName, "Popcorn"));
    microwave.setVisibility(View.VISIBLE);
    microwave.setText(getString(R.string.factory_productMicrowave, "Yes, 800W for 3 minutes"));
    expiresAfter.setVisibility(View.VISIBLE);
    expiresAfter.setText(getString(R.string.factory_expiresAfter, 1));
  }
  
  
  /** The user tapped on the image for noodles */
  public void noodlesSelected(View v){
    //load the object to write
    writeData = ProductFactory.getNoodles();
    //set the data to display
    name.setVisibility(View.VISIBLE);
    name.setText(getString(R.string.factory_productName, "Noodles"));
    microwave.setVisibility(View.VISIBLE);
    microwave.setText(getString(R.string.factory_productMicrowave, "Yes, 1200W for 8 minutes"));
    expiresAfter.setVisibility(View.VISIBLE);
    expiresAfter.setText(getString(R.string.factory_expiresAfter, 4));
  }
  
  
  /** This function is called when the user wants to write the data on a NFC tag */
  public void writeIntention(View v){
    writeOnTap = true;
    //register to get all NFC tags
    NfcAdapter.getDefaultAdapter(this).enableForegroundDispatch(this, pendingIntent, null, null);
    //show a message saying the user should tap a NFC tag to write
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setMessage("Please tap a NFC tag to write the data on it")
           .setTitle("Write Product Information")
           .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
             public void onClick(DialogInterface dialog, int id) {
               //turn the write mode off
               writeOnTap = false;
             }
         });
    dialog = builder.create();
    dialog.show();
  }

  @Override
  public void readComplete(SodfWrapper data) {
    //not needed and thus ignored here
  }

  @Override
  public void writeComplete(final int resultCode) {
    handler.post(new Runnable() {
      @Override
      public void run() {
        //show a toast based on the read result
        Toast toast;
        switch (resultCode){
        case SodfCallback.WRITE_IO_EXCEPTION: toast = Toast.makeText(self, "IO exception when writing. Please try againg!", Toast.LENGTH_LONG); break;
        case SodfCallback.WRITE_FORMAT_EXCEPTION: toast = Toast.makeText(self, "Format exception when writing. Please try againg!", Toast.LENGTH_LONG); break;
        default: toast = Toast.makeText(self, "Write successful", Toast.LENGTH_LONG);
        }
        toast.show();
      }
    });    
  }
  
  /* (non-Javadoc)
   * @see android.app.Activity#onPause()
   */
  @Override
  protected void onPause() {
    //has to be disabled because the app is not in foreground anymore
    NfcAdapter.getDefaultAdapter(this).disableForegroundDispatch(this);
    super.onPause();
  }
  
  /* (non-Javadoc)
   * @see android.app.Activity#onNewIntent(android.content.Intent)
   */
  @Override
  protected void onNewIntent(Intent intent) {
    Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
    //ensure that a tag was tapped and the user wants to write data
    if (tag != null && writeData != null && writeOnTap == true){
      //switch the write mode off
      writeOnTap = false;
      //hide the dialog
      if (dialog != null) dialog.cancel();
      //tell the framework to write the data
      SodfFramework.writeData(tag, writeData, "lal.apps.smartfoodenvironment.factory", this);      
    }
  }

}

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