Android Open Source - WhatsUp List View Activity

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License

The source code is released under:
GNU General Public License
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Java Source Code

package nu.placebo.whatsup.activity;
//w  w w .  ja va 2 s  .c  o  m
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import nu.placebo.whatsup.R;
import nu.placebo.whatsup.constants.Constants;
import nu.placebo.whatsup.datahandling.DataProvider;
import nu.placebo.whatsup.model.GeoLocation;
import nu.placebo.whatsup.model.ListMarker;
import nu.placebo.whatsup.model.ReferencePoint;
import nu.placebo.whatsup.network.GeoLocationsRetrieve;
import nu.placebo.whatsup.network.NetworkOperationListener;
import nu.placebo.whatsup.network.NetworkTask;
import nu.placebo.whatsup.network.OperationResult;
import nu.placebo.whatsup.util.GeoPointUtil;
import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.TextView;

import com.google.android.maps.GeoPoint;

/**
 * Activity showing annotations in a list view.
 * 
 * @author max
 * 
 */
public class ListViewActivity extends ListActivity implements OnClickListener,
    NetworkOperationListener<List<GeoLocation>> {

  private ArrayList<ListMarker> m_markers = null;
  private MarkerAdapter m_adapter;
  private ReferencePoint ref;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.setContentView(R.layout.listview);

    this.buildToolbar();
    m_markers = new ArrayList<ListMarker>();
    this.m_adapter = new MarkerAdapter(this, R.layout.list_item, m_markers);
    setListAdapter(this.m_adapter);

  }
  
  @Override
  protected void onResume(){
    this.ref = DataProvider.getDataProvider(this).getCurrentReferencePoint();
    refresh();
    super.onResume();
  }

  private void refresh() {
    GeoPoint[] points = GeoPointUtil.getBottomLeftToTopRightPoints(this.ref.getGeoPoint(), 180000, 180000);
    double[] area = GeoPointUtil.convertAreaToDoubles(points[0], points[1]);
    GeoLocationsRetrieve glr = new GeoLocationsRetrieve(area);
    glr.addOperationListener(this);
    new NetworkTask<List<GeoLocation>>().execute(glr);
  }

  private void buildToolbar() {
    ImageButton mapBtn = (ImageButton) this
        .findViewById(R.id.list_goto_map);
    mapBtn.setOnClickListener(this);
    ImageButton refreshBtn = (ImageButton) this
        .findViewById(R.id.list_refresh);
    refreshBtn.setOnClickListener(this);
    ImageButton addAnnotBtn = (ImageButton) this.findViewById(R.id.add_annotation);
    addAnnotBtn.setOnClickListener(this);
    ImageButton refPointBtn = (ImageButton) this.findViewById(R.id.goto_refpoint);
    refPointBtn.setOnClickListener(this);
    
  }

  private Runnable returnRes = new Runnable() {

    public void run() {
      if (m_markers != null && m_markers.size() > 0) {
        m_adapter.markers.clear();
        m_adapter.notifyDataSetChanged();
        for (int i = 0; i < m_markers.size(); i++)
          m_adapter.add(m_markers.get(i));
      }
      // m_ProgressDialog.dismiss();
      m_adapter.notifyDataSetChanged();
    }
  };

  public void onClick(View v) {
    if (v.getId() == R.id.list_goto_map) {
      Intent intent = new Intent(this, MapViewActivity.class);
      this.startActivity(intent);
      this.finish();
    }
    if (v.getId() == R.id.list_refresh) {
      this.refresh();
    }
    if(v.getId() == R.id.add_annotation){
      Intent intent = new Intent(this,
          PositionPickerActivity.class);
      intent.putExtra("requestCode", Constants.ANNOTATION);
      this.startActivity(intent);
    }
    if(v.getId() == R.id.goto_refpoint){
      Intent intent = new Intent(this, RefPointActivity.class);
      this.startActivity(intent);
    }
    
  }

  public void operationExcecuted(OperationResult<List<GeoLocation>> result) {

    if (!result.hasErrors()) {
      m_markers = new ArrayList<ListMarker>();

      for (GeoLocation item : result.getResult()) {
        m_markers.add(new ListMarker(item, ref));
      }

      Collections.sort(m_markers);
      runOnUiThread(returnRes);
    }
  }

  private class MarkerAdapter extends ArrayAdapter<ListMarker> implements
      OnClickListener {
    private Context ctx;
    private ArrayList<ListMarker> markers;

    public MarkerAdapter(Context context, int textViewResourceId,
        ArrayList<ListMarker> objects) {
      super(context, textViewResourceId, objects);
      this.markers = objects;
      this.ctx = context;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      View v = convertView;
      if (v == null) {
        LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        v = vi.inflate(R.layout.list_item, null);
      }
      ListMarker lm = markers.get(position);
      if (lm != null) {
        TextView t_title = (TextView) v
            .findViewById(R.id.list_item_title);
        TextView t_rating = (TextView) v
            .findViewById(R.id.list_item_rating);
        TextView t_range = (TextView) v
            .findViewById(R.id.list_item_range);

        if (t_title != null)
          t_title.setText(lm.getTitle());
        if (t_range != null)
          t_range.setText(lm.getRange());
        if (t_title != null)
          t_rating.setText(lm.getRating());
        v.setId(lm.getId());
        v.setOnClickListener(this);

      }
      return v;
    }

    public void onClick(View v) {
      Log.w("ListItem", "test - id: " + v.getId());
      Intent intent = new Intent(ctx, AnnotationActivity.class);
      intent.putExtra("nid", v.getId());
      ctx.startActivity(intent);
    }

  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    MenuHelper.inflate(menu, this.getMenuInflater());
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    return MenuHelper.onOptionsItemSelected(item, this);
  }

  @Override
  public boolean onPrepareOptionsMenu(Menu menu) {
    return MenuHelper.onPrepareOptionsMenu(menu, this);
  }
}
Java Source Code List
