package in.wptrafficanalyzer.locationactionbarcompatsearchviewv2;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.List;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.SearchManager;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.net.Uri;
import android.util.Log;
public class PlaceProvider extends ContentProvider {
public static final String AUTHORITY = "in.wptrafficanalyzer.locationsherlocksearchviewmapv2.PlaceProvider";
public static final Uri SEARCH_URI = Uri.parse("content://"+AUTHORITY+"/search"); public static final Uri DETAILS_URI = Uri.parse("content://"+AUTHORITY+"/details"); private static final int SEARCH = 1;
private static final int SUGGESTIONS = 2;
private static final int DETAILS = 3;
String mKey = "key=YOUR_BROWSER_KEY";
// Defines a set of uris allowed with this content provider
private static final UriMatcher mUriMatcher = buildUriMatcher();
private static UriMatcher buildUriMatcher() {
UriMatcher uriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
// URI for "Go" button
uriMatcher.addURI(AUTHORITY, "search", SEARCH );
// URI for suggestions in Search Dialog
uriMatcher.addURI(AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY,SUGGESTIONS);
// URI for Details
uriMatcher.addURI(AUTHORITY, "details",DETAILS);
return uriMatcher;
}
@Override
public Cursor query(Uri uri, String[] projection, String selection,
String[] selectionArgs, String sortOrder) {
Cursor c = null;
PlaceJSONParser parser = new PlaceJSONParser();
PlaceDetailsJSONParser detailsParser = new PlaceDetailsJSONParser();
String jsonString = "";
String jsonPlaceDetails = "";
List<HashMap<String, String>> list = null;
List<HashMap<String, String>> detailsList = null;
MatrixCursor mCursor = null;
switch(mUriMatcher.match(uri)){
case SEARCH:
// Defining a cursor object with columns description, lat and lng
mCursor = new MatrixCursor(new String[] { "description","lat","lng" });
// Create a parser object to parse places in JSON format
parser = new PlaceJSONParser();
// Create a parser object to parse place details in JSON format
detailsParser = new PlaceDetailsJSONParser();
// Get Places from Google Places API
jsonString = getPlaces(selectionArgs);
try {
// Parse the places ( JSON => List )
list = parser.parse(new JSONObject(jsonString));
// Finding latitude and longitude for each places using Google Places Details API
for(int i=0;i<list.size();i++){
HashMap<String, String> hMap = (HashMap<String, String>) list.get(i);
detailsParser =new PlaceDetailsJSONParser();
// Get Place details
jsonPlaceDetails = getPlaceDetails(hMap.get("reference"));
// Parse the details ( JSON => List )
detailsList = detailsParser.parse(new JSONObject(jsonPlaceDetails));
// Creating cursor object with places
for(int j=0;j<detailsList.size();j++){
HashMap<String, String> hMapDetails = detailsList.get(j);
// Adding place details to cursor
mCursor.addRow(new String[]{ hMap.get("description") , hMapDetails.get("lat") , hMapDetails.get("lng") });
}
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
c = mCursor;
break;
case SUGGESTIONS :
// Defining a cursor object with columns id, SUGGEST_COLUMN_TEXT_1, SUGGEST_COLUMN_INTENT_EXTRA_DATA
mCursor = new MatrixCursor(new String[] { "_id", SearchManager.SUGGEST_COLUMN_TEXT_1, SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA } );
// Creating a parser object to parse places in JSON format
parser = new PlaceJSONParser();
// Get Places from Google Places API
jsonString = getPlaces(selectionArgs);
try {
// Parse the places ( JSON => List )
list = parser.parse(new JSONObject(jsonString));
// Creating cursor object with places
for(int i=0;i<list.size();i++){
HashMap<String, String> hMap = (HashMap<String, String>) list.get(i);
// Adding place details to cursor
mCursor.addRow(new String[] { Integer.toString(i), hMap.get("description"), hMap.get("reference") });
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
c = mCursor;
break;
case DETAILS :
// Defining a cursor object with columns description, lat and lng
mCursor = new MatrixCursor(new String[] { "description","lat","lng" });
detailsParser = new PlaceDetailsJSONParser();
jsonPlaceDetails = getPlaceDetails(selectionArgs[0]);
try {
detailsList = detailsParser.parse(new JSONObject(jsonPlaceDetails));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
for(int j=0;j<detailsList.size();j++){
HashMap<String, String> hMapDetails = detailsList.get(j);
mCursor.addRow(new String[]{ hMapDetails.get("formatted_address") , hMapDetails.get("lat") , hMapDetails.get("lng") });
}
c = mCursor;
break;
}
return c;
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
// TODO Auto-generated method stub
return 0;
}
@Override
public String getType(Uri uri) {
// TODO Auto-generated method stub
return null;
}
@Override
public Uri insert(Uri uri, ContentValues values) {
// TODO Auto-generated method stub
return null;
}
@Override
public boolean onCreate() {
// TODO Auto-generated method stub
return false;
}
@Override
public int update(Uri uri, ContentValues values, String selection,
String[] selectionArgs) {
// TODO Auto-generated method stub
return 0;
}
/** A method to download json data from url */
private String downloadUrl(String strUrl) throws IOException{
String data = "";
InputStream iStream = null;
HttpURLConnection urlConnection = null;
try{
URL url = new URL(strUrl);
// Creating an http connection to communicate with url
urlConnection = (HttpURLConnection) url.openConnection();
// Connecting to url
urlConnection.connect();
// Reading data from url
iStream = urlConnection.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(iStream));
StringBuffer sb = new StringBuffer();
String line = "";
while( ( line = br.readLine()) != null){
sb.append(line);
}
data = sb.toString();
br.close();
}catch(Exception e){
Log.d("Exception while downloading url", e.toString());
}finally{
iStream.close();
urlConnection.disconnect();
}
return data;
}
private String getPlaceDetailsUrl(String ref){
// reference of place
String reference = "reference="+ref;
// Sensor enabled
String sensor = "sensor=false";
// Building the parameters to the web service
String parameters = reference+"&"+sensor+"&"+mKey;
// Output format
String output = "json";
// Building the url to the web service
return url;
}
private String getPlacesUrl(String qry){
try {
qry = "input=" + URLEncoder.encode(qry, "utf-8");
} catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
// Sensor enabled
String sensor = "sensor=false";
// place type to be searched
String types = "types=geocode";
// Building the parameters to the web service
String parameters = qry+"&"+types+"&"+sensor+"&"+mKey;
// Output format
String output = "json";
// Building the url to the web service
return url;
}
private String getPlaces(String[] params){
// For storing data from web service
String data = "";
String url = getPlacesUrl(params[0]);
try{
// Fetching the data from web service in background
data = downloadUrl(url);
}catch(Exception e){
Log.d("Background Task",e.toString());
}
return data;
}
private String getPlaceDetails(String reference){
String data = "";
String url = getPlaceDetailsUrl(reference);
try {
data = downloadUrl(url);
} catch (IOException e) {
e.printStackTrace();
}
return data;
}
}
BlackmoonT92 