The document appears to be notes related to using Google Maps API and making HTTP requests in Android. It includes code snippets for making a request to the Google Maps Geocoding API and parsing the JSON response. It discusses different HTTP libraries available in different Android versions like Apache HTTP Client, HttpURLConnection. It also shows how to build a JSON object from the response and extract address data and latitude/longitude coordinates.

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21. • Ecrair/Froyo Apache HTTP Client
• Gingerbread HttpURLConnection API
Android
• HttpURLConnection
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26. oogle Maps API
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35. package jp.co.kayo.android.localplayer.ds.ampache.test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URLEncoder;
import android.test.AndroidTestCase;
import android.util.Log;
public class MapAPITest extends AndroidTestCase {
final String TAG = "MapAPI Test";
public void testCallService() {
try {
URI uri = new URI("http://maps.google.com/maps/api/geocode/json?address=".concat(
URLEncoder.encode(" ")).concat("&sensor=false"));
HttpURLConnection con = (HttpURLConnection) uri.toURL().openConnection();
InputStream is = con.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
String line;
while ((line = reader.readLine()) != null) {
Log.d("", line);
}
is.close();
reader.close();
} catch (URISyntaxException e) {
Log.d(TAG, "URI Syntax error", e);
} catch (MalformedURLException e) {
Log.d(TAG, "URL Malformed Error", e);
} catch (IOException e) {
Log.d(TAG, "IO error", e);
}
}
}
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37. try {
URI uri = new URI("http://maps.google.com/maps/api/geocode/json?address=".concat(
URLEncoder.encode(" ")).concat("&sensor=false"));
HttpURLConnection con = (HttpURLConnection) uri.toURL().openConnection();
InputStream is = con.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder json = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
Log.d("", line);
json.append(line);
}
is.close();
reader.close();
} catch (URISyntaxException e) {
Log.d(TAG, "URI Syntax error", e);
} catch (MalformedURLException e) {
Log.d(TAG, "URL Malformed Error", e);
} catch (IOException e) {
Log.d(TAG, "IO error", e);
}
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38. StringBuilder json = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
Log.d("", line);
json.append(line);
}
{
"results" : [
{
"address_components" : [
{
"long_name" : " ",
"short_name" : " ",
"types" : [ "locality", "political" ]
},
{
"long_name" : " ",
"short_name" : " ",
"types" : [ "administrative_area_level_1", "political" ]
},
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39. {
"long_name" : " ",
"short_name" : " ",
"types" : [ "locality", "political" ]
}
"formatted_address" : " , ",
"geometry" : {
"bounds" : {
"northeast" : {
"lat" : 31.63195899999999,
"lng" : 130.82772330
},
"southwest" : {
"lat" : 31.41453820,
"lng" : 130.68629260
}
},
"location" : {
"lat" : 31.49273440,
"lng" : 130.70091430
},
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40. private void printAddress(String str){
try {
JSONObject json = new JSONObject(str);
JSONArray results = json.getJSONArray("results");
int count = results.length();
for(int i=0; i<count; i++){
JSONObject item = results.getJSONObject(i);
String formatted_address = item.getString("formatted_address");
JSONObject geom = item.getJSONObject("geometry");
JSONObject location = geom.getJSONObject("location");
String lat = location.getString("lat");
String lng = location.getString("lng");
Log.d(TAG, "formatted_address"+ formatted_address);
Log.d(TAG, "(lat, lng)="+lat+","+lng);
}
} catch (JSONException e) {
Log.d(TAG, "Json Error", e);
}
}
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