Android Open Source - WAIDRecognizer Add Vehicle Dialog

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Back to project page WAIDRecognizer.

License

The source code is released under:

GNU General Public License

Java Source Code

package it.unibo.cs.jonus.waidrec;
//w w  w .j  a  v a  2  s  .  com
import java.util.ArrayList;

import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.ContentValues;
import android.content.DialogInterface;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;
import android.widget.Spinner;

public class AddVehicleDialog extends DialogFragment {
  private ArrayList<Bitmap> mIcons = new ArrayList<Bitmap>();
  private Spinner viSpinner;
  private EditText nameEditText;
  private static int[] sIconsRes = { R.drawable.idle_00b0b0,
      R.drawable.walking_00b0b0, R.drawable.car_00b0b0,
      R.drawable.train_00b0b0, R.drawable.bicycle_00b0b0,
      R.drawable.bus_00b0b0, R.drawable.boat_00b0b0,
      R.drawable.plane_00b0b0, R.drawable.running_00b0b0 };

  public interface VehicleDialogListener {
    public void onDialogPositiveClick(DialogFragment dialog);
  }

  VehicleDialogListener mListener;

  @Override
  public Dialog onCreateDialog(Bundle savedInstanceState) {
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

    LayoutInflater inflater = getActivity().getLayoutInflater();
    View layout = inflater.inflate(R.layout.dialog_add_vehicle, null);

    // Get list of icons
    for (int res : sIconsRes) {
      Bitmap icon = lessResolution(getResources(), res, 100, 100);
      mIcons.add(icon);
    }
    // Build elements
    viSpinner = (Spinner) layout.findViewById(R.id.icons_list);
    viSpinner.setAdapter(new VIListAdapter(getActivity(), mIcons));
    nameEditText = (EditText) layout.findViewById(R.id.vehicle_name);

    // Build the dialog
    builder.setView(layout);
    builder.setPositiveButton(android.R.string.ok,
        new DialogInterface.OnClickListener() {
          @Override
          public void onClick(DialogInterface dialog, int which) {
            // Get the name and icon
            String name = nameEditText.getText().toString();
            String test = name.replaceAll("\\s+", "");
            if (!test.equals("")) {
              // TODO insert full icon instead of scaled one
              Bitmap icon = (Bitmap) viSpinner.getSelectedItem();
              // Add the vehicle to the database
              VehicleItem item = new VehicleItem();
              item.setCategory(name);
              item.setIcon(icon);
              Uri uri = Uri
                  .parse(EvaluationsProvider.VEHICLES_URI
                      + EvaluationsProvider.PATH_ADD_VEHICLE);
              ContentValues values = EvaluationsProvider
                  .vehicleItemToContentValues(item);
              getActivity().getContentResolver().insert(uri,
                  values);

              if (mListener != null) {
                mListener
                    .onDialogPositiveClick(AddVehicleDialog.this);
              }

              dialog.dismiss();
            }
          }
        });
    builder.setNegativeButton(android.R.string.cancel,
        new DialogInterface.OnClickListener() {
          @Override
          public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
          }
        });

    return builder.create();
  }

  public void registerListener(VehicleDialogListener listener) {
    mListener = listener;
  }

  public void unregisterListener() {
    mListener = null;
  }

  public static Bitmap lessResolution(Resources res, int resourceId,
      int width, int height) {
    int reqHeight = width;
    int reqWidth = height;
    BitmapFactory.Options options = new BitmapFactory.Options();

    // First decode with inJustDecodeBounds=true to check dimensions
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeResource(res, resourceId, options);

    // Calculate inSampleSize
    options.inSampleSize = calculateInSampleSize(options, reqWidth,
        reqHeight);

    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;

    return BitmapFactory.decodeResource(res, resourceId, options);
  }

  private static int calculateInSampleSize(BitmapFactory.Options options,
      int reqWidth, int reqHeight) {

    final int height = options.outHeight;
    final int width = options.outWidth;
    int inSampleSize = 1;

    if (height > reqHeight || width > reqWidth) {

      // Calculate ratios of height and width to requested height and
      // width
      final int heightRatio = Math.round((float) height
          / (float) reqHeight);
      final int widthRatio = Math.round((float) width / (float) reqWidth);

      // Choose the smallest ratio as inSampleSize value, this will
      // guarantee
      // a final image with both dimensions larger than or equal to the
      // requested height and width.
      inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
    }
    return inSampleSize;
  }
}

Java Source Code List

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