Android Open Source - WAIDRecognizer Vehicles List Adapter

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Back to project page WAIDRecognizer.

License

The source code is released under:

GNU General Public License

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Java Source Code

package it.unibo.cs.jonus.waidrec;
/*from w w  w .  j a v  a  2  s  . c  o  m*/
import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class VehiclesListAdapter extends ArrayAdapter<VehicleItem> {

  private LayoutInflater inflater;
  private List<VehicleItem> items;

  public VehiclesListAdapter(Context ctx, ArrayList<VehicleItem> objects) {
    super(ctx, R.layout.vehicles_list_item, objects);

    this.inflater = LayoutInflater.from(ctx);
    this.items = objects;
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {

    // Create a new view of my layout and inflate it in the row
    convertView = (RelativeLayout) inflater.inflate(
        R.layout.vehicles_list_item, parent, false);

    // Extract evaluation
    VehicleItem vehicle = getItem(position);
    String vehicleName = vehicle.getCategory();

    // Set item's name
    TextView txtName = (TextView) convertView
        .findViewById(R.id.vehicle_name);
    txtName.setText(vehicleName);

    // Get number of instances for this vehicle
    Uri uri = Uri.parse(EvaluationsProvider.TRAINING_DATA_URI
        + EvaluationsProvider.PATH_VEHICLE_TRAINING_DATA);
    Cursor cursor = getContext().getContentResolver().query(uri,
        MainActivity.allColumnsProjection,
        DatabaseOpenHelper.COLUMN_CATEGORY + " =?",
        new String[] { vehicleName }, null);
    ArrayList<VehicleInstance> instances = EvaluationsProvider
        .cursorToVehicleInstanceArray(cursor);
    cursor.close();
    int instancesCount = instances.size();
    TextView txtInstances = (TextView) convertView
        .findViewById(R.id.vehicle_instances_number);
    txtInstances.setText(instancesCount
        + " "
        + getContext().getResources().getString(
            R.string.instances_suffix));

    // Create remove vehicle button
    Button deleteButton = (Button) convertView
        .findViewById(R.id.remove_vehicle_button);
    deleteButton.setTag(vehicle);
    deleteButton.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View v) {
        // Delete this vehicle from the database
        // TODO add confirmation dialog
        VehicleItem selectedItem = (VehicleItem) v.getTag();
        String vehicleName = selectedItem.getCategory();
        Uri uri = Uri.parse(EvaluationsProvider.VEHICLES_URI
            + EvaluationsProvider.PATH_REMOVE_VEHICLE);
        int count = getContext().getContentResolver().delete(uri,
            DatabaseOpenHelper.COLUMN_CATEGORY + " =?",
            new String[] { vehicleName });

        if (count > 0) {
          uri = Uri.parse(EvaluationsProvider.TRAINING_DATA_URI
              + EvaluationsProvider.PATH_DELETE_TRAINING_VEHICLE);
          getContext().getContentResolver().delete(uri,
              DatabaseOpenHelper.COLUMN_CATEGORY + " =?",
              new String[] { vehicleName });

          remove(selectedItem);
          notifyDataSetChanged();
        } else {
          // TODO error?
        }
      }
    });

    return convertView;

  }

  @Override
  public VehicleItem getItem(int position) {
    return items.get(position);
  }

}

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