Ramilol
Reputation: 3462
Implementing Google Places API
I have been trying for the last couple days to find a simple tutorial on this but it seems like there is no such thing as simple with google's API.
Here is what I know so far
step 1 send http message using a url that will contain long and lat and API_Key
step 2 get result and prasae it
step 3 use the data to get what I need.
I just can't seem to figure it out. If you could provide me an example or just anything on how to implement this API it would be great!
My java file
package com.example.learnaboutme;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
import org.apache.commons.logging.Log;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;
import android.app.ProgressDialog;
import android.content.Context;
import android.graphics.Color;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.Polyline;
import com.google.android.gms.maps.model.PolylineOptions;
public class MainActivity extends FragmentActivity {
Context[] context = new Context[1];
GPS[] gps = new GPS[1];
Home home = null;
RelativeLayout[] rel = new RelativeLayout[1];
XMLParase xmlParase = null;
private GoogleMap myMap;
Polyline line;
Location location;
// Static LatLng
LatLng startLatLng = new LatLng(30.707104, 76.690749);
LatLng endLatLng = new LatLng(30.721419, 76.730017);
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.activity_main);
final TextView text = (TextView)this.findViewById(R.id.text);
gps[0] = new GPS();
gps[0].start(this);
home = new Home();
context[0] = this;
rel[0] = (RelativeLayout)findViewById(R.id.rel);
home.Initalize(rel, context);
xmlParase = new XMLParase();
location = gps[0].GetCoor();
myMap = ((SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.mapk)).getMap();
try{
final LatLng PERTH = new LatLng(-31.90, 115.86);
Marker perth = myMap.addMarker(new MarkerOptions()
.position(PERTH)
.anchor((float)0.5,(float)0.5)
.rotation((float)90.0));
String urlTopass = makeURL(startLatLng.latitude,
startLatLng.longitude, endLatLng.latitude,
endLatLng.longitude);
// new connectAsyncTask(urlTopass).execute();
}catch(Exception e){
e.printStackTrace();
}
Timer timer = new Timer();
final Handler handler = new Handler();
timer.schedule(new TimerTask(){
public void run(){
handler.post(new Runnable(){
public void run()
{
home.Check(gps);
String data = MainActivity.this.xmlParase.readXML("locations.xml", context[0], "Home", "address");
if(!data.equals("")) {
text.setText(data);
}
}
});
}
}, 2000, 1000);
}
private class connectAsyncTask extends AsyncTask<Void, Void, String> {
private ProgressDialog progressDialog;
String url;
connectAsyncTask(String urlPass) {
url = urlPass;
}
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
progressDialog = new ProgressDialog(context[0]);
progressDialog.setMessage("Fetching route, Please wait...");
progressDialog.setIndeterminate(true);
progressDialog.show();
}
@Override
protected String doInBackground(Void... params) {
JSONParser jParser = new JSONParser();
String json = jParser.getJSONFromUrl(url);
return json;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
progressDialog.hide();
if (result != null) {
drawPath(result);
}
}
}
public String makeURL(double sourcelat, double sourcelog, double destlat,
double destlog) {
StringBuilder urlString = new StringBuilder();
urlString.append("http://maps.googleapis.com/maps/api/directions/json");
urlString.append("?origin=");// from
urlString.append(Double.toString(sourcelat));
urlString.append(",");
urlString.append(Double.toString(sourcelog));
urlString.append("&destination=");// to
urlString.append(Double.toString(destlat));
urlString.append(",");
urlString.append(Double.toString(destlog));
urlString.append("&sensor=false&mode=driving&alternatives=true");
return urlString.toString();
}
public class JSONParser {
InputStream is = null;
JSONObject jObj = null;
String json = "";
// constructor
public JSONParser() {
}
public String getJSONFromUrl(String url) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(
new InputStreamReader(is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
json = sb.toString();
is.close();
} catch (Exception e) {
}
return json;
}
}
public void drawPath(String result) {
if (line != null) {
myMap.clear();
}
myMap.addMarker(new MarkerOptions().position(endLatLng).icon(
BitmapDescriptorFactory.fromResource(R.drawable.ic_launcher)));
myMap.addMarker(new MarkerOptions().position(startLatLng).icon(
BitmapDescriptorFactory.fromResource(R.drawable.ic_launcher)));
try {
// Tranform the string into a json object
final JSONObject json = new JSONObject(result);
JSONArray routeArray = json.getJSONArray("routes");
JSONObject routes = routeArray.getJSONObject(0);
JSONObject overviewPolylines = routes
.getJSONObject("overview_polyline");
String encodedString = overviewPolylines.getString("points");
List<LatLng> list = decodePoly(encodedString);
PolylineOptions options = new PolylineOptions().width(5).color(Color.BLUE).geodesic(true);
for (int z = 0; z < list.size(); z++) {
LatLng point = list.get(z);
options.add(point);
}
line = myMap.addPolyline(options);
/*for (int z = 0; z < list.size() - 1; z++) {
LatLng src = list.get(z);
LatLng dest = list.get(z + 1);
line = myMap.addPolyline(new PolylineOptions()
.add(new LatLng(src.latitude, src.longitude),
new LatLng(dest.latitude, dest.longitude))
.width(5).color(Color.BLUE).geodesic(true));
}*/
} catch (Exception e) {
e.printStackTrace();
}
}
private List<LatLng> decodePoly(String encoded) {
List<LatLng> poly = new ArrayList<LatLng>();
int index = 0, len = encoded.length();
int lat = 0, lng = 0;
while (index < len) {
int b, shift = 0, result = 0;
do {
b = encoded.charAt(index++) - 63;
result |= (b & 0x1f) << shift;
shift += 5;
} while (b >= 0x20);
int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
lat += dlat;
shift = 0;
result = 0;
do {
b = encoded.charAt(index++) - 63;
result |= (b & 0x1f) << shift;
shift += 5;
} while (b >= 0x20);
int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
lng += dlng;
LatLng p = new LatLng((((double) lat / 1E5)),
(((double) lng / 1E5)));
poly.add(p);
}
return poly;
}
public boolean onCreateOptionsMenu(Menu var1) {
this.getMenuInflater().inflate(R.menu.main, var1);
return true;
}
}
my xml file
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
xmlns:map="http://schemas.android.com/apk/res-auto"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity"
android:id="@+id/rel" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world"
android:id="@+id/text" />
<fragment
android:id="@+id/mapk"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.SupportMapFragment"/>
</RelativeLayout>
the errors I am gettting are
01-10 16:47:16.283: W/ActivityThread(8390): Application com.example.learnaboutme is waiting for the debugger on port 8100...
01-10 16:47:16.303: I/System.out(8390): Sending WAIT chunk
01-10 16:47:16.503: I/System.out(8390): Debugger has connected
01-10 16:47:16.503: I/System.out(8390): waiting for debugger to settle...
01-10 16:47:16.703: I/System.out(8390): waiting for debugger to settle...
01-10 16:47:16.904: I/System.out(8390): waiting for debugger to settle...
01-10 16:47:17.104: I/System.out(8390): waiting for debugger to settle...
01-10 16:47:17.304: I/System.out(8390): waiting for debugger to settle...
01-10 16:47:17.504: I/System.out(8390): waiting for debugger to settle...
01-10 16:47:17.704: I/System.out(8390): waiting for debugger to settle...
01-10 16:47:17.905: I/System.out(8390): waiting for debugger to settle...
01-10 16:47:18.105: I/System.out(8390): waiting for debugger to settle...
01-10 16:47:18.305: I/System.out(8390): waiting for debugger to settle...
01-10 16:47:18.505: I/System.out(8390): waiting for debugger to settle...
01-10 16:47:18.706: I/System.out(8390): debugger has settled (1424)
01-10 16:51:07.610: W/dalvikvm(8390): threadid=1: thread exiting with uncaught exception (group=0x410789d8)
01-10 16:51:07.680: E/AndroidRuntime(8390): FATAL EXCEPTION: main
01-10 16:51:07.680: E/AndroidRuntime(8390): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.learnaboutme/com.example.learnaboutme.MainActivity}: android.view.InflateException: Binary XML file line #18: Error inflating class fragment
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1960)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1985)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.app.ActivityThread.access$600(ActivityThread.java:127)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1151)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.os.Handler.dispatchMessage(Handler.java:99)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.os.Looper.loop(Looper.java:137)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.app.ActivityThread.main(ActivityThread.java:4477)
01-10 16:51:07.680: E/AndroidRuntime(8390): at java.lang.reflect.Method.invokeNative(Native Method)
01-10 16:51:07.680: E/AndroidRuntime(8390): at java.lang.reflect.Method.invoke(Method.java:511)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:788)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
01-10 16:51:07.680: E/AndroidRuntime(8390): at dalvik.system.NativeStart.main(Native Method)
01-10 16:51:07.680: E/AndroidRuntime(8390): Caused by: android.view.InflateException: Binary XML file line #18: Error inflating class fragment
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:697)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.view.LayoutInflater.rInflate(LayoutInflater.java:739)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:262)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.app.Activity.setContentView(Activity.java:2071)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.example.learnaboutme.MainActivity.onCreate(MainActivity.java:61)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.app.Activity.performCreate(Activity.java:4701)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1051)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1924)
01-10 16:51:07.680: E/AndroidRuntime(8390): ... 11 more
01-10 16:51:07.680: E/AndroidRuntime(8390): Caused by: java.lang.IllegalStateException: The meta-data tag in your app's AndroidManifest.xml does not have the right value. Expected 4030500 but found 0. You must have the following declaration within the <application> element: <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.google.android.gms.common.GooglePlayServicesUtil.n(Unknown Source)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.google.android.gms.common.GooglePlayServicesUtil.isGooglePlayServicesAvailable(Unknown Source)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.google.android.gms.maps.internal.q.v(Unknown Source)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.google.android.gms.maps.internal.q.u(Unknown Source)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.google.android.gms.maps.MapsInitializer.initialize(Unknown Source)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.google.android.gms.maps.SupportMapFragment$b.cE(Unknown Source)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.google.android.gms.maps.SupportMapFragment$b.a(Unknown Source)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.google.android.gms.dynamic.a.a(Unknown Source)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.google.android.gms.dynamic.a.onInflate(Unknown Source)
01-10 16:51:07.680: E/AndroidRuntime(8390): at com.google.android.gms.maps.SupportMapFragment.onInflate(Unknown Source)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:290)
01-10 16:51:07.680: E/AndroidRuntime(8390): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:669)
01-10 16:51:07.680: E/AndroidRuntime(8390): ... 21 more
Upvotes: 1
Views: 2708
Answers (2)
Lal
Reputation: 14810
here is the code for implementing google places. Following is the xml file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
<RelativeLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:padding="10dp">
<ListView
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="250dp" />
</RelativeLayout>
</LinearLayout>
here is the code that has to be written in the java file
ArrayList<HashMap<String, String>> placesListItems = new ArrayList<HashMap<String,String>>();
// KEY Strings
public static String KEY_REFERENCE = "reference"; // id of the place
public static String KEY_NAME = "name"; // name of the place
public static String KEY_VICINITY = "vicinity"; // Place area name
lv = (ListView) findViewById(R.id.list);
// calling background Async task to load Google Places
// After getting places from Google all the data is shown in listview
new LoadPlaces().execute();
class LoadPlaces extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(PlacesActivity.this);
pDialog.setMessage(Html.fromHtml("<b>Search</b><br/>Loading Places..."));
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting Places JSON
* */
protected String doInBackground(String... args) {
// creating Places class object
googlePlaces = new GooglePlaces();
try {
// Separeate your place types by PIPE symbol "|"
// If you want all types places make it as null
// Check list of types supported by google
//
String types; // Listing places only cafes, restaurants
if(searchtype.equals("hotel"))
types = "cafe|restaurant|bakery|lodging|meal_delivery|meal_takeaway|";
// Radius in meters - increase this value if you don't find any places
double radius = 1000; // 1000 meters
// get nearest places
nearPlaces = googlePlaces.search(gps.getLatitude(),
gps.getLongitude(), radius, types);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* and show the data in UI
* Always use runOnUiThread(new Runnable()) to update UI from background
* thread, otherwise you will get error
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
pDialog.dismiss();
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
/**
* Updating parsed Places into LISTVIEW
* */
// Get json response status
String status = nearPlaces.status;
// Check for all possible status
if(status.equals("OK")){
// Successfully got places details
if (nearPlaces.results != null) {
// loop through each place
SupportMapFragment mapFrag = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
GoogleMap Mmap=mapFrag.getMap();
LatLng start=new LatLng(gps.getLatitude(), gps.getLongitude());
md.showmap(Mmap, start);
sm.setmarker(PlacesActivity.this, Mmap,gps.getLatitude(), gps.getLongitude(), "You", R.drawable.mark_blue);
for (Place p : nearPlaces.results) {
HashMap<String, String> map = new HashMap<String, String>();
// Place reference won't display in listview - it will be hidden
// Place reference is used to get "place full details"
map.put(KEY_REFERENCE, p.reference);
// Place name
map.put(KEY_NAME, p.name);
sm.setmarker(PlacesActivity.this, Mmap, p.geometry.location.lat, p.geometry.location.lng, p.name, R.drawable.mark_red);
// adding HashMap to ArrayList
placesListItems.add(map);
}
// list adapter
ListAdapter adapter = new SimpleAdapter(PlacesActivity.this, placesListItems,
R.layout.list_item,
new String[] { KEY_REFERENCE, KEY_NAME}, new int[] {
R.id.reference, R.id.name });
// Adding data into listview
lv.setAdapter(adapter);
}
}
else if(status.equals("ZERO_RESULTS")){
// Zero results found
alert.showAlertDialog(PlacesActivity.this, "Near Places",
"Sorry no places found. Try to change the types of places",
false);
}
else if(status.equals("UNKNOWN_ERROR"))
{
alert.showAlertDialog(PlacesActivity.this, "Places Error",
"Sorry unknown error occured.",
false);
}
else if(status.equals("OVER_QUERY_LIMIT"))
{
alert.showAlertDialog(PlacesActivity.this, "Places Error",
"Sorry query limit to google places is reached",
false);
}
else if(status.equals("REQUEST_DENIED"))
{
alert.showAlertDialog(PlacesActivity.this, "Places Error",
"Sorry error occured. Request is denied",
false);
}
else if(status.equals("INVALID_REQUEST"))
{
alert.showAlertDialog(PlacesActivity.this, "Places Error",
"Sorry error occured. Invalid Request",
false);
}
else
{
alert.showAlertDialog(PlacesActivity.this, "Places Error",
"Sorry error occured.",
false);
}
}
});
}
}
Upvotes: 0
AndroidHacker
Reputation: 3596
Here is reference for all you need ..
https://developers.google.com/places/documentation/ AND https://developers.google.com/maps/documentation/android/reference/com/google/android/gms/maps/MapFragment
And you can use same some thing like undermentioned ..
Check this simple class that implements all you need
public class MainActivity extends FragmentActivity implements OnClickListener {
private GoogleMap myMap;
Polyline line;
Context context;
Location location;
boolean check_provider_enabled = false;
// Static LatLng
LatLng startLatLng = new LatLng(30.707104, 76.690749);
LatLng endLatLng = new LatLng(30.721419, 76.730017);
public void onCreate(Bundle bd) {
super.onCreate(bd);
setContentView(R.layout.activity_main);
context = MainActivity.this;
// GoogleMap myMap
myMap = ((SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map)).getMap();
/*
// Construct a CameraPosition focusing on Mountain View and animate the camera to that position.
CameraPosition cameraPosition = new CameraPosition.Builder()
//.target(endLatLng) // Sets the center of the map to Mountain View
.zoom(17) // Sets the zoom
.bearing(90) // Sets the orientation of the camera to east
.tilt(30) // Sets the tilt of the camera to 30 degrees
.build(); // Creates a CameraPosition from the builder
myMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));*/
myMap.setMyLocationEnabled(true);
myMap.moveCamera(CameraUpdateFactory.newLatLng(startLatLng));
myMap.animateCamera(CameraUpdateFactory.zoomTo(12));
myMap.getUiSettings().setZoomControlsEnabled(false);
LocationManager service = (LocationManager) getSystemService(LOCATION_SERVICE);
boolean enabled = service.isProviderEnabled(LocationManager.GPS_PROVIDER);
location = service.getLastKnownLocation(LocationManager.GPS_PROVIDER);
// check if enabled and if not send user to the GSP settings
// Better solution would be to display a dialog and suggesting to
// go to the settings
if (!enabled) {
/*Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);*/
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
Toast.makeText(getApplicationContext(), "Enable GPS servcies to use this app.", Toast.LENGTH_LONG).show();
} else{
try{
final LatLng PERTH = new LatLng(-31.90, 115.86);
Marker perth = myMap.addMarker(new MarkerOptions()
.position(PERTH)
.anchor((float)0.5,(float)0.5)
.rotation((float)90.0));
String urlTopass = makeURL(startLatLng.latitude,
startLatLng.longitude, endLatLng.latitude,
endLatLng.longitude);
// new connectAsyncTask(urlTopass).execute();
}catch(Exception e){
e.printStackTrace();
}
}
/* if (myMap!=null){
Marker hamburg = myMap.addMarker(new MarkerOptions().position(startLatLng)
.title("Hamburg"));
Marker kiel = myMap.addMarker(new MarkerOptions()
.position(endLatLng)
.title("Vivek")
.snippet("VIVEK's ANDROID HACKER")
.icon(BitmapDescriptorFactory
.fromResource(R.drawable.one)));
}*/
// Now auto clicking the button
// btntemp.performClick();
}
/*
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_pass_home_call_temp:
String urlTopass = makeURL(startLatLng.latitude,
startLatLng.longitude, endLatLng.latitude,
endLatLng.longitude);
new connectAsyncTask(urlTopass).execute();
break;
default:
break;
}
}*/
private class connectAsyncTask extends AsyncTask<Void, Void, String> {
private ProgressDialog progressDialog;
String url;
connectAsyncTask(String urlPass) {
url = urlPass;
}
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
progressDialog = new ProgressDialog(context);
progressDialog.setMessage("Fetching route, Please wait...");
progressDialog.setIndeterminate(true);
progressDialog.show();
}
@Override
protected String doInBackground(Void... params) {
JSONParser jParser = new JSONParser();
String json = jParser.getJSONFromUrl(url);
return json;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
progressDialog.hide();
if (result != null) {
drawPath(result);
}
}
}
public String makeURL(double sourcelat, double sourcelog, double destlat,
double destlog) {
StringBuilder urlString = new StringBuilder();
urlString.append("http://maps.googleapis.com/maps/api/directions/json");
urlString.append("?origin=");// from
urlString.append(Double.toString(sourcelat));
urlString.append(",");
urlString.append(Double.toString(sourcelog));
urlString.append("&destination=");// to
urlString.append(Double.toString(destlat));
urlString.append(",");
urlString.append(Double.toString(destlog));
urlString.append("&sensor=false&mode=driving&alternatives=true");
return urlString.toString();
}
public class JSONParser {
InputStream is = null;
JSONObject jObj = null;
String json = "";
// constructor
public JSONParser() {
}
public String getJSONFromUrl(String url) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(
new InputStreamReader(is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
json = sb.toString();
is.close();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
return json;
}
}
public void drawPath(String result) {
if (line != null) {
myMap.clear();
}
myMap.addMarker(new MarkerOptions().position(endLatLng).icon(
BitmapDescriptorFactory.fromResource(R.drawable.ic_launcher)));
myMap.addMarker(new MarkerOptions().position(startLatLng).icon(
BitmapDescriptorFactory.fromResource(R.drawable.ic_launcher)));
try {
// Tranform the string into a json object
final JSONObject json = new JSONObject(result);
JSONArray routeArray = json.getJSONArray("routes");
JSONObject routes = routeArray.getJSONObject(0);
JSONObject overviewPolylines = routes
.getJSONObject("overview_polyline");
String encodedString = overviewPolylines.getString("points");
List<LatLng> list = decodePoly(encodedString);
PolylineOptions options = new PolylineOptions().width(5).color(Color.BLUE).geodesic(true);
for (int z = 0; z < list.size(); z++) {
LatLng point = list.get(z);
options.add(point);
}
line = myMap.addPolyline(options);
/*for (int z = 0; z < list.size() - 1; z++) {
LatLng src = list.get(z);
LatLng dest = list.get(z + 1);
line = myMap.addPolyline(new PolylineOptions()
.add(new LatLng(src.latitude, src.longitude),
new LatLng(dest.latitude, dest.longitude))
.width(5).color(Color.BLUE).geodesic(true));
}*/
} catch (Exception e) {
e.printStackTrace();
}
}
private List<LatLng> decodePoly(String encoded) {
List<LatLng> poly = new ArrayList<LatLng>();
int index = 0, len = encoded.length();
int lat = 0, lng = 0;
while (index < len) {
int b, shift = 0, result = 0;
do {
b = encoded.charAt(index++) - 63;
result |= (b & 0x1f) << shift;
shift += 5;
} while (b >= 0x20);
int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
lat += dlat;
shift = 0;
result = 0;
do {
b = encoded.charAt(index++) - 63;
result |= (b & 0x1f) << shift;
shift += 5;
} while (b >= 0x20);
int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
lng += dlng;
LatLng p = new LatLng((((double) lat / 1E5)),
(((double) lng / 1E5)));
poly.add(p);
}
return poly;
}
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
}
/*@Override
public void onMarkerDrag(Marker marker) {
//add the marker's latlng in a arraylist of LatLng and pass it to the loop
for (int i = 0; i < arraylistoflatlng.size(); i++) {
myMap.addPolyline(new PolylineOptions()
.addAll(arraylistoflatlng)
.width(5)
.color(Color.RED));
}
}*/
}
That's it. You are good to go. Cheers!
Upvotes: 1
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