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GNU General Public License
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package com.facebook.android; /*ww w. j a v a 2 s . co m*/ import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.app.Activity; import android.app.AlertDialog; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.location.Criteria; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.os.Handler; import android.os.Looper; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.BaseAdapter; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; import com.renaultsport.heartrate.R; public class Places extends Activity implements OnItemClickListener { private Handler mHandler; private JSONObject location; protected ListView placesList; protected LocationManager lm; protected MyLocationListener locationListener; protected static JSONArray jsonArray; final static double TIMES_SQUARE_LAT = 40.756; final static double TIMES_SQUARE_LON = -73.987; protected ProgressDialog dialog; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mHandler = new Handler(); location = new JSONObject(); setContentView(R.layout.places_list); Bundle extras = getIntent().getExtras(); String default_or_new = extras.getString("LOCATION"); if (default_or_new.equals("times_square")) { try { location.put("latitude", new Double(TIMES_SQUARE_LAT)); location.put("longitude", new Double(TIMES_SQUARE_LON)); } catch (JSONException e) { } fetchPlaces(); } else { getLocation(); } } public void getLocation() { /* * launch a new Thread to get new location */ new Thread() { @Override public void run() { Looper.prepare(); dialog = ProgressDialog.show(Places.this, "", getString(R.string.fetching_location), false, true, new DialogInterface.OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { showToast("No location fetched."); } }); if (lm == null) { lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE); } if (locationListener == null) { locationListener = new MyLocationListener(); } Criteria criteria = new Criteria(); criteria.setAccuracy(Criteria.ACCURACY_COARSE); String provider = lm.getBestProvider(criteria, true); if (provider != null && lm.isProviderEnabled(provider)) { lm.requestLocationUpdates(provider, 1, 0, locationListener, Looper.getMainLooper()); } else { /* * GPS not enabled, prompt user to enable GPS in the * Location menu */ new AlertDialog.Builder(Places.this) .setTitle(R.string.enable_gps_title) .setMessage(getString(R.string.enable_gps)) .setPositiveButton(R.string.gps_settings, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { startActivityForResult( new Intent( android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS), 0); } }) .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); Places.this.finish(); } }).show(); } Looper.loop(); } }.start(); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { /* * User returning from the Location settings menu. try to fetch location * again. */ dialog.dismiss(); getLocation(); } /* * Fetch nearby places by providing the search type as 'place' within 1000 * mtrs of the provided lat & lon */ private void fetchPlaces() { if (!isFinishing()) { dialog = ProgressDialog.show(Places.this, "", getString(R.string.nearby_places), true, true, new DialogInterface.OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { showToast("No places fetched."); } }); } /* * Source tag: fetch_places_tag */ Bundle params = new Bundle(); params.putString("type", "place"); try { params.putString("center", location.getString("latitude") + "," + location.getString("longitude")); } catch (JSONException e) { showToast("No places fetched."); return; } params.putString("distance", "1000"); Utility.mAsyncRunner.request("search", params, new placesRequestListener()); } /* * Callback after places are fetched. */ public class placesRequestListener extends BaseRequestListener { @Override public void onComplete(final String response, final Object state) { Log.d("Facebook-FbAPIs", "Got response: " + response); dialog.dismiss(); try { jsonArray = new JSONObject(response).getJSONArray("data"); if (jsonArray == null) { showToast("Error: nearby places could not be fetched"); return; } } catch (JSONException e) { showToast("Error: " + e.getMessage()); return; } mHandler.post(new Runnable() { @Override public void run() { placesList = (ListView) findViewById(R.id.places_list); placesList.setOnItemClickListener(Places.this); placesList.setAdapter(new PlacesListAdapter(Places.this)); } }); } public void onFacebookError(FacebookError error) { dialog.dismiss(); showToast("Fetch Places Error: " + error.getMessage()); } } @Override public void onItemClick(AdapterView<?> arg0, View v, int position, long arg3) { if (!Utility.mFacebook.isSessionValid()) { Util.showAlert(this, "Warning", "You must first log in."); } else { try { final String message = "Check-in from the " + getString(R.string.app_name); final String name = jsonArray.getJSONObject(position).getString("name"); final String placeID = jsonArray.getJSONObject(position).getString("id"); new AlertDialog.Builder(this).setTitle(R.string.check_in_title) .setMessage(String.format(getString(R.string.check_in_at), name)) .setPositiveButton(R.string.checkin, new DialogInterface.OnClickListener() { /* * Source tag: check_in_tag Check-in user at the * selected location posting to the me/checkins * endpoint. More info here: * https://developers.facebook * .com/docs/reference/api/user/ - checkins */ @Override public void onClick(DialogInterface dialog, int which) { Bundle params = new Bundle(); params.putString("place", placeID); params.putString("message", message); params.putString("coordinates", location.toString()); Utility.mAsyncRunner.request("me/checkins", params, "POST", new placesCheckInListener(), null); } }).setNegativeButton(R.string.cancel, null).show(); } catch (JSONException e) { showToast("Error: " + e.getMessage()); } } } public class placesCheckInListener extends BaseRequestListener { @Override public void onComplete(final String response, final Object state) { showToast("API Response: " + response); } public void onFacebookError(FacebookError error) { dialog.dismiss(); showToast("Check-in Error: " + error.getMessage()); } } public void showToast(final String msg) { mHandler.post(new Runnable() { @Override public void run() { Toast toast = Toast.makeText(Places.this, msg, Toast.LENGTH_LONG); toast.show(); } }); } /** * Definition of the list adapter */ public class PlacesListAdapter extends BaseAdapter { private LayoutInflater mInflater; Places placesList; public PlacesListAdapter(Context context) { mInflater = LayoutInflater.from(context); } @Override public int getCount() { return jsonArray.length(); } @Override public Object getItem(int position) { return null; } @Override public long getItemId(int position) { return 0; } @Override public View getView(int position, View convertView, ViewGroup parent) { JSONObject jsonObject = null; try { jsonObject = jsonArray.getJSONObject(position); } catch (JSONException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } View hView = convertView; if (convertView == null) { hView = mInflater.inflate(R.layout.place_item, null); ViewHolder holder = new ViewHolder(); holder.name = (TextView) hView.findViewById(R.id.place_name); holder.location = (TextView) hView.findViewById(R.id.place_location); hView.setTag(holder); } ViewHolder holder = (ViewHolder) hView.getTag(); try { holder.name.setText(jsonObject.getString("name")); } catch (JSONException e) { holder.name.setText(""); } try { String location = jsonObject.getJSONObject("location").getString("street") + ", " + jsonObject.getJSONObject("location").getString("city") + ", " + jsonObject.getJSONObject("location").getString("state"); holder.location.setText(location); } catch (JSONException e) { holder.location.setText(""); } return hView; } } class ViewHolder { TextView name; TextView location; } class MyLocationListener implements LocationListener { @Override public void onLocationChanged(Location loc) { dialog.dismiss(); if (loc != null) { try { location.put("latitude", new Double(loc.getLatitude())); location.put("longitude", new Double(loc.getLongitude())); } catch (JSONException e) { } showToast("Location acquired: " + String.valueOf(loc.getLatitude()) + " " + String.valueOf(loc.getLongitude())); lm.removeUpdates(this); fetchPlaces(); } } @Override public void onProviderDisabled(String provider) { } @Override public void onProviderEnabled(String provider) { } @Override public void onStatusChanged(String provider, int status, Bundle extras) { } } }