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coursera-android-location-lab

coursera-android-location-lab/Skeleton/src/course/labs/locationlab/MockLocationProvider.javaKyle Jorgensenkjorg50on 20 Apr 2014initial commit1contributorRawBlameHistory47 lines (34 sloc)1.346 kbpackage course.labs.locationlab;

// Adapted from code found at:

// http://mobiarch.wordpress.com/2012/07/17/testing-with-mock-location-data-in-android/

import android.content.Context;

import android.location.Location;

import android.location.LocationManager;

import android.os.SystemClock;

public class MockLocationProvider {

private String mProviderName;

private LocationManager mLocationManager;

private static float mockAccuracy = 5;

public MockLocationProvider(String name, Context ctx) {

this.mProviderName = name;

mLocationManager = (LocationManager) ctx

.getSystemService(Context.LOCATION_SERVICE);

mLocationManager.addTestProvider(mProviderName, false, false, false,

false, true, true, true, 0, 5);

mLocationManager.setTestProviderEnabled(mProviderName, true);

}

public void pushLocation(double lat, double lon) {

Location mockLocation = new Location(mProviderName);

mockLocation.setLatitude(lat);

mockLocation.setLongitude(lon);

mockLocation.setAltitude(0);

mockLocation.setTime(System.currentTimeMillis());

mockLocation

.setElapsedRealtimeNanos(SystemClock.elapsedRealtimeNanos());

mockLocation.setAccuracy(mockAccuracy);

mLocationManager.setTestProviderLocation(mProviderName, mockLocation);

}

public void shutdown() {

mLocationManager.removeTestProvider(mProviderName);

}

}

coursera-android-location-lab/Skeleton/src/course/labs/locationlab/PlaceDownloaderTask.javaKyle Jorgensenkjorg50on 20 Apr 2014updaed geoname ID1contributorRawBlameHistory229 lines (178 sloc)5.856 kbpackage course.labs.locationlab;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.StringReader;

import java.lang.ref.WeakReference;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.DOMException;

import org.w3c.dom.Document;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import org.xml.sax.InputSource;

import org.xml.sax.SAXException;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;



import android.os.AsyncTask;

import android.util.Log;

public class PlaceDownloaderTask extends AsyncTask {

// Change to false if you don't have network access

private static final boolean HAS_NETWORK = true;

// DONE - put your www.geonames.org account name here.

private static String USERNAME = "kjorg50";

private HttpURLConnection mHttpUrl;

private WeakReference mParent;

private static Bitmap mStubBitmap;

private static Location mockLoc1 = new Location(LocationManager.NETWORK_PROVIDER);

private static Location mockLoc2 = new Location(LocationManager.NETWORK_PROVIDER);

public PlaceDownloaderTask(PlaceViewActivity parent) {

super();

mParent = new WeakReference(parent);

if (!HAS_NETWORK) {

mStubBitmap = BitmapFactory.decodeResource(parent.getResources(),R.drawable.stub);

mockLoc1.setLatitude(37.422);

mockLoc1.setLongitude(-122.084);

mockLoc2.setLatitude(38.996667);

mockLoc2.setLongitude(-76.9275);

}

}

@Override

protected PlaceRecord doInBackground(Location... location) {

PlaceRecord place = null;

if (HAS_NETWORK) {

place = getPlaceFromURL(generateURL(USERNAME, location[0]));

if ("" != place.getCountryName()) {

place.setLocation(location[0]);

place.setFlagBitmap(getFlagFromURL(place.getFlagUrl()));

} else {

place = null;

}

} else {

place = new PlaceRecord(location[0]);

if (location[0].distanceTo(mockLoc1) < 100) {

place.setCountryName("United States");

place.setPlace("The Greenhouse");

place.setFlagBitmap(mStubBitmap);

} else {

place.setCountryName("United States");

place.setPlace("Berwyn");

place.setFlagBitmap(mStubBitmap);

}

}

return place;

}

@Override

protected void onPostExecute(PlaceRecord result) {

if (null != result && null != mParent.get()) {

mParent.get().addNewPlace(result);

}

}

private PlaceRecord getPlaceFromURL(String... params) {

String result = null;

BufferedReader in = null;

try {

URL url = new URL(params[0]);

mHttpUrl = (HttpURLConnection) url.openConnection();

in = new BufferedReader(new InputStreamReader(

mHttpUrl.getInputStream()));

StringBuffer sb = new StringBuffer("");

String line = "";

while ((line = in.readLine()) != null) {

sb.append(line + "\n");

}

result = sb.toString();

} catch (MalformedURLException e) {

} catch (IOException e) {

} finally {

try {

if (null != in) {

in.close();

}


e.printStackTrace();

}

mHttpUrl.disconnect();

}

return placeDataFromXml(result);

}

private Bitmap getFlagFromURL(String flagUrl) {

InputStream in = null;

Log.i("temp", flagUrl);

try {

URL url = new URL(flagUrl);

mHttpUrl = (HttpURLConnection) url.openConnection();

in = mHttpUrl.getInputStream();

return BitmapFactory.decodeStream(in);

} catch (MalformedURLException e) {

Log.e("DEBUG", e.toString());


Log.e("DEBUG", e.toString());

} finally {

try {

if (null != in) {

in.close();

}



}

mHttpUrl.disconnect();

}

return BitmapFactory.decodeResource(mParent.get().getResources(),

R.drawable.stub);

}

private static PlaceRecord placeDataFromXml(String xmlString) {

DocumentBuilder builder;

String countryName = "";

String countryCode = "";

String placeName = "";

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

try {

builder = factory.newDocumentBuilder();

Document document = builder.parse(new InputSource(new StringReader(

xmlString)));

NodeList list = document.getDocumentElement().getChildNodes();

for (int i = 0; i < list.getLength(); i++) {

Node curr = list.item(i);

NodeList list2 = curr.getChildNodes();

for (int j = 0; j < list2.getLength(); j++) {

Node curr2 = list2.item(j);

if (curr2.getNodeName() != null) {

if (curr2.getNodeName().equals("countryName")) {

countryName = curr2.getTextContent();

} else if (curr2.getNodeName().equals("countryCode")) {

countryCode = curr2.getTextContent();

} else if (curr2.getNodeName().equals("name")) {

placeName = curr2.getTextContent();

}

}

}

}

} catch (DOMException e) {


} catch (ParserConfigurationException e) {


} catch (SAXException e) {




}

return new PlaceRecord(generateFlagURL(countryCode.toLowerCase()),

countryName, placeName);

}

private static String generateURL(String username, Location location) {

return "http://www.geonames.org/findNearbyPlaceName?username="

+ username + "&style=full&lat=" + location.getLatitude()

+ "&lng=" + location.getLongitude();

}

private static String generateFlagURL(String countryCode) {

return "http://www.geonames.org/flags/x/" + countryCode + ".gif";

}

}

coursera-android-location-lab/Skeleton/src/course/labs/locationlab/PlaceViewActivity.javaKyle Jorgensenkjorg50on 20 Apr 2014remove TODOs1contributorRawBlameHistory243 lines (188 sloc)7.046 kbpackage course.labs.locationlab;

import java.util.ArrayList;

import android.app.ListActivity;

import android.content.Context;


import android.location.LocationListener;


import android.os.Bundle;

import android.util.Log;

import android.view.Menu;

import android.view.MenuInflater;

import android.view.MenuItem;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.ListView;

import android.widget.TextView;

import android.widget.Toast;

public class PlaceViewActivity extends ListActivity implements LocationListener {

private static final long FIVE_MINS = 5 * 60 * 1000;

private static String TAG = "Lab-Location";

private Location mLastLocationReading;

private PlaceViewAdapter mAdapter;

// default minimum time between new readings

private long mMinTime = 5000;

// default minimum distance between old and new readings.

private float mMinDistance = 1000.0f;

private LocationManager mLocationManager;

// A fake location provider used for testing

private MockLocationProvider mMockLocationProvider;

private TextView mFooterView;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

// DONE - Set up the app's user interface

// This class is a ListActivity, so it has its own ListView

// ListView's adapter should be a PlaceViewAdapter

mAdapter = new PlaceViewAdapter(getApplicationContext());

// from UI lab...

// Put divider between ToDoItems and FooterView

getListView().setFooterDividersEnabled(true);

// DONE - add a footerView to the ListView

// You can use footer_view.xml to define the footer

// 1. get a layout inflater

// 2. call the inflate method, with the id of the footer view resource

// 3. cast it as a TextView

mFooterView = (TextView) this.getLayoutInflater().inflate(R.layout.footer_view, null);

// adds it to the ListView

getListView().addFooterView(mFooterView);

// enable it only if there is a location

mFooterView.setEnabled(mLastLocationReading != null);

// DONE - When the footerView's onClick() method is called, it must issue the

// following log call

// log("Entered footerView.OnClickListener.onClick()");

mFooterView.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

log("Entered footerView.OnClickListener.onClick()");

// footerView must respond to user clicks.

// Must handle 3 cases:

// 3) There is no current location - response is up to you. The best

// solution is to disable the footerView until you have a location.

if (mLastLocationReading == null)

{

log("Location data is not available");

mFooterView.setEnabled(false);

}

// 1) The current location is new - download new Place Badge. Issue the

// following log call:

// log("Starting Place Download");

if(! mAdapter.intersects(mLastLocationReading))

{

log("Starting Place Download");

PlaceDownloaderTask pdt = new PlaceDownloaderTask(PlaceViewActivity.this);

pdt.execute(mLastLocationReading);

} else {

// 2) The current location has been seen before - issue Toast message.

// Issue the following log call:

log("You already have this location badge");

Toast.makeText(getApplicationContext(), "You already have this location badge", Toast.LENGTH_LONG).show();

}

}

});

// Attach the adapter to this ListActivity's ListView

getListView().setAdapter(mAdapter);

}

@Override

protected void onResume() {

super.onResume();

Location tempLoc;

mMockLocationProvider = new MockLocationProvider(

LocationManager.NETWORK_PROVIDER, this);

// DONE - Check NETWORK_PROVIDER for an existing location reading.

// Acquire reference to the LocationManager

if (null == (mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE)))

finish();

tempLoc = mLocationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);

// Only keep this last reading if it is fresh - less than 5 minutes old.

if(tempLoc != null && age(tempLoc)

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