Android Open Source - android-foursquare-client Checkin Map

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License

The source code is released under:

Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions...

Java Source Code

package com.foursquare.api.map;
/*from   w  w w.  j  a v a 2  s .  c  o  m*/
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;

import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;

import com.example.androidfoursquareclient.R;
import com.foursquare.api.oauth2.Credentials;
import com.foursquare.api.oauth2.store.CredentialStore;
import com.foursquare.api.oauth2.store.SharedPreferencesCredentialStore;
import com.foursquare.api.utils.Constants;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.OverlayItem;
import com.google.api.client.auth.oauth2.draft10.AccessTokenResponse;

import fi.foyt.foursquare.api.FoursquareApi;
import fi.foyt.foursquare.api.Result;
import fi.foyt.foursquare.api.entities.Setting;
import fi.foyt.foursquare.api.io.DefaultIOHandler;

public class CheckinMap extends MapActivity {

  private ArrayList<OverlayItem> overlays;
  private FoursquareApi foursquareApi;

  private SharedPreferences sharedPreferences;

  private MapView mapView;
  private MapController mapController;

  private Drawable drawable;

  private String venueName   = null;
  private String venueAddress = null;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.checkin_map);
    
    this.sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);

    this.drawable = this.getResources().getDrawable(R.drawable.pin);

    this.overlays = new ArrayList<OverlayItem>();
    this.mapView = (MapView) findViewById(R.id.mapview);

    this.mapView.setBuiltInZoomControls(true);
    this.mapView.setVisibility(View.GONE);
    this.mapController = mapView.getController();

    HelloItemizedOverlay itemizedoverlay = new HelloItemizedOverlay(
        drawable);
    mapView.getOverlays().add(itemizedoverlay);

    if (getIntent().getExtras() != null) {
      final Double latitude   = getIntent().getExtras().getDouble(Constants.PLACE_LAT_FIELD);
      final Double longitude   = getIntent().getExtras().getDouble(Constants.PLACE_LNG_FIELD);
      venueAddress       = getIntent().getExtras().getString(Constants.PLACE_ADDRESS_FIELD);
      venueName         = getIntent().getExtras().getString(Constants.PLACE_NAME_FIELD);
      final GeoPoint geoPoint = new GeoPoint((int) (latitude * 1E6), (int) (longitude * 1E6));
      
      HelloItemizedOverlay venueOverlay = (HelloItemizedOverlay) mapView.getOverlays().get(0);
      
      final OverlayItem overlayitem = new OverlayItem(geoPoint, venueName, venueAddress);
      
      venueOverlay.addOverlay(overlayitem);
      mapController.animateTo(geoPoint);
      mapController.setCenter(geoPoint);
      mapController.setZoom(16);
    }
    new PerformApiCallTask().execute();
  }
  
  @Override
  protected boolean isRouteDisplayed() {
    return false;
  }

  private class HelloItemizedOverlay extends ItemizedOverlay<OverlayItem> {
    public HelloItemizedOverlay(Drawable defaultMarker) {
      super(boundCenterBottom(defaultMarker));
      populate();
    }

    public void addOverlay(OverlayItem overlay) {
      overlays.add(overlay);
      populate();
    }

    @Override
    protected OverlayItem createItem(int i) {
      return overlays.get(i);
    }

    @Override
    public int size() {
      return overlays.size();
    }

    @Override
    public boolean onTap(GeoPoint p, MapView mapView) {
      HelloItemizedOverlay itemizedoverlay = (HelloItemizedOverlay) mapView
          .getOverlays().get(0);
      OverlayItem overlayitem = new OverlayItem(p, "Location at "
          + "title", "snippet");
      itemizedoverlay.addOverlay(overlayitem);
      mapView.invalidate();
      showVenueList(p.getLatitudeE6() / 1E6,
          p.getLongitudeE6() / 1E6);
      return true;
    }
  }
  
  private class PerformApiCallTask extends AsyncTask<Uri, Void, Void> {

    private boolean apiCallSuccess = false;
    @Override
    protected Void doInBackground(Uri...params) {
      try {
        final Result<Setting> result = getFoursquareApi().settingsAll();
        
          if (result.getMeta().getCode() == 200) {
            apiCallSuccess=true;
          } else {
            apiCallSuccess=false;
            StringBuffer sb = new StringBuffer();
          sb.append("Error occured: ");
          sb.append("  code: " + result.getMeta().getCode());
          sb.append("  type: " + result.getMeta().getErrorType());
          sb.append("  detail: " + result.getMeta().getErrorDetail());
          }

      } catch (Exception ex) {
        ex.printStackTrace();
      }
            return null;
    }

    @Override
    protected void onPreExecute() { }
    
    @Override
    protected void onPostExecute(Void result) {
      if (apiCallSuccess) {
        mapView.setVisibility(View.VISIBLE);
      } else {
        mapView.setVisibility(View.GONE);
      }
    }
  }
  
    private void showVenueList(double latitude,double longitude) {
    Intent intent = new Intent(this, VenueList.class);
    intent.putExtra(Constants.PLACE_LAT_FIELD, latitude);
    intent.putExtra(Constants.PLACE_LNG_FIELD, longitude);
    startActivityForResult(intent, Constants.NOTIFICATION_STATUS_OK);  
    }
    
  public static void writeToLogFile(File file, String text) {
    try {
      BufferedWriter buf = new BufferedWriter(new FileWriter(file, false));
      buf.append(text);
      buf.newLine();
      buf.close();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  public FoursquareApi getFoursquareApi() {
    if (this.foursquareApi==null) {
      this.sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
      CredentialStore credentialStore = new SharedPreferencesCredentialStore(sharedPreferences);
      
      AccessTokenResponse accessTokenResponse = credentialStore.read();
      this.foursquareApi = new FoursquareApi(Credentials.CLIENT_ID,
          Credentials.CLIENT_SECRET,
          Credentials.REDIRECT_URI,
          accessTokenResponse.accessToken, new DefaultIOHandler());
    }
    return this.foursquareApi;
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
  }
  
}

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