MapActivity查询最近的医院/餐厅无法工作
1.取代了MapActivity2＆＃39;类到服务器API密钥 2.让清单中的其他键和＆＃39; maps_activites.xml。是android API密钥
3.在Google Developer APIS上启用以下APIS：
谷歌地图Android API
适用于Android的Google Places API Google Places API网络服务
砰！有效。在任何情况下，这里都是我的github存储库的代码： https://github.com/bholagabbar/AurumHealthApp
我想从我当前的位置找回最近的餐馆。我正在使用我在网上找到的代码here。但是我收到以下错误。我已将整个logcat放置为执行，并以粗体突出显示错误：
11-30 04：53：31.000 25292-25292 /？我/艺术：迟到-Xcheck：jni
11-30 04：53：31.033 25292-25302 /？我/艺术：调试器不再有效
＆lt;＆gt; 11-30 04：53：31.100 25292-25311 /？ I / GMPM：应用程序测量正在启动时11-30 04：53：31.109 25292-25311 /？ E / GMPM：getGoogleAppId失败，状态为：10
11-30 04：53：31.111 25292-25311 /？ E / GMPM：无法上传。应用测量已禁用
11-30 04：53：31.125 25292-25314 /？ D / OpenGLRenderer：使用EGL_SWAP_BEHAVIOR_PRESERVED：true`11-30 04：53：31.135 25292-25292 /？ D / Atlas：验证地图...
11-30 04：53：31.178 25292-25314 /？ I / Adreno-EGL :: EGL 1.4 QUALCOMM build：（Ibddc658e36）
11-30 04：53：31.178 25292-25314 /？ I / Adreno-EGL：OpenGL ES着色器编译器版本：E031.25.03.04
11-30 04：53：31.178 25292-25314 /？ I / Adreno-EGL：建造日期：08/10/15星期一11-30 04：53：31.178 25292-25314 /？ I / Adreno-EGL：Local Branch：workspace
11-30 04:53:31.178 25292-25314 /？ I / Adreno-EGL：Remote Branch：
11-30 04：53：31.178 25292-25314 /？ I / Adreno-EGL：Local Patches：
11-30 04：53：31.178 25292-25314 /？ I / Adreno-EGL：重建分支：
11-30 04：53：31.179 25292-25314 /？ I / OpenGLRenderer：初始化的EGL，版本1.4
11-30 04：53：31.193 25292-25314 /？ D / OpenGLRenderer：启用调试模式0
11-30 04：53：32.663 25292-25292 / com.iotaconcepts.aurum I / Choreographer：跳过37帧！应用程序可能在其主线程上做了太多工作。
11-30 04：53：32.737 25292-25314 / com.iotaconcepts.aurum V / RenderScript：应用程序请求CPU执行
11-30 04 ：53：32.747 25292-25314 / com.iotaconcepts.aurum V / RenderScript：0xb7f96960启动线程，CPU 4
11-30 04：53：36.092 25292-25292 / com.iotaconcepts.aurum D / AndroidRuntime ：关闭VM
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：FATAL EXCEPTION：main
11-30 04：53：36.093 25292-25292 / com .iotaconcepts.aurum E / AndroidRuntime：进程：com.iotaconcepts.aurum，PID：25292
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：java.lang.RuntimeException：无法启动活动ComponentInfo {com.iotaconcepts.aurum / com.iotaconcepts.aurum.MapsActivity2}：java.lang.NullPointerException：尝试调用虚方法＆＃39; void com.google.android.gms.maps.SupportMapFragment.getMapAsync （com.google.android.gms.maps.OnMapReadyCallback）＆＃39;在null对象引用上11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2339)
11 -30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2413)
11-30 04:53:36.093 25292-25292 /com.iotaconcepts.aurum E / AndroidRuntime：在android.app.ActivityThread.access $ 800（ActivityThread.java:155)
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime ：在android.app.ActivityThread $ H.handleMessage（ActivityThread.java:1317)
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：在android.os.Handler。 dispatchMessage（Handler.java:102)
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at android.os.Looper.loop（Looper.java:135）
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at android.app.Activi tyThread.main（ActivityThread.java:5343)
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at java.lang.reflect.Method.invoke（Native Method）< br /> 11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at java.lang.reflect.Method.invoke（Method.java:372)
11-30 04： 53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:907)
11-30 04：53：36.093 25292 -25292 / com.iotaconcepts.aurum E / AndroidRuntime：at com.android.internal.os.ZygoteInit.main（ZygoteInit.java:702)
11-30 04：53：36.093 25292-25292 / com.iotaconcepts .aurum E / AndroidRuntime：引起：java.lang.NullPointerException：尝试调用虚方法＆＃39; void com.google.android.gms.maps.SupportMapFragment.getMapAsync（com.google.android.gms。 maps.OnMapReadyCallback）＆＃39;在null对象引用上11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at com.iotaconcepts.aurum.MapsActivity2.onCreate（MapsActivity2.java:42）
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at android.app.Activity.performCreate（Activity.java:6010)
11-30 04： 53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1129)
11-30 04：53：36.093 25292-25292 / com.iotaconcepts .aurum E / AndroidRuntime：在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2292)
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at android.app .ActivityThread.handleLaunchActivity（ActivityThread.java:2413)
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at android.app.ActivityThread.access $ 800（ActivityThread.java： 155）
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：在android.app.ActivityThread $ H.handleMessage（ActivityThread.java:1317)
11-30 04:53:36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at android.os .Handler.dispatchMessage（Handler.java:102)
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at android.os.Looper.loop（Looper.java:135 ）
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at android.app.ActivityThread.main（ActivityThread.java:5343)
11-30 04： 53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at java.lang.reflect.Method.invoke（Native Method）
11-30 04：53：36.093 25292-25292 / com.iotaconcepts。 aurum E / AndroidRuntime：at java.lang.reflect.Method.invoke（Method.java:372)
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntime：at com。 android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:907)
11-30 04：53：36.093 25292-25292 / com.iotaconcepts.aurum E / AndroidRuntim e：at com.android.internal.os.ZygoteInit.main（ZygoteInit.java:702）
在过去的2个小时里，我一直在试图弄清楚错误但是徒劳无功。以下是活动的代码：
编辑修复后，这是代码
包com.iotaconcepts.aurum;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
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 org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class MapsActivity2 extends AppCompatActivity implements OnMapReadyCallback
{
private GoogleMap mGoogleMap;
SupportMapFragment mapFrag;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mapFrag = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFrag.getMapAsync(this);
}
@Override
public void onMapReady(GoogleMap googleMap)
{
mGoogleMap=googleMap;
mGoogleMap.setMyLocationEnabled(true);
StringBuilder sbValue = new StringBuilder(sbMethod());
PlacesTask placesTask = new PlacesTask();
placesTask.execute(sbValue.toString());
}
public StringBuilder sbMethod()
{
//use your current location here
double mLatitude = 37.77657;
double mLongitude = -122.417506;
StringBuilder sb = new StringBuilder("https://maps.googleapis.com/maps/api/place/nearbysearch/json?");
sb.append("location=" + mLatitude + "," + mLongitude);
sb.append("&radius=5000");
sb.append("&types=" + "restaurant");
sb.append("&sensor=true");
sb.append("&key=AIza************************");
Log.d("Map", "url: " + sb.toString());
return sb;
}
private class PlacesTask extends AsyncTask<String, Integer, String>
{
String data = null;
// Invoked by execute() method of this object
@Override
protected String doInBackground(String... url) {
try {
data = downloadUrl(url[0]);
} catch (Exception e) {
Log.d("Background Task", e.toString());
}
return data;
}
// Executed after the complete execution of doInBackground() method
@Override
protected void onPostExecute(String result) {
ParserTask parserTask = new ParserTask();
// Start parsing the Google places in JSON format
// Invokes the "doInBackground()" method of the class ParserTask
parserTask.execute(result);
}
}
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", e.toString());
} finally {
iStream.close();
urlConnection.disconnect();
}
return data;
}
private class ParserTask extends AsyncTask<String, Integer, List<HashMap<String, String>>> {
JSONObject jObject;
// Invoked by execute() method of this object
@Override
protected List<HashMap<String, String>> doInBackground(String... jsonData) {
List<HashMap<String, String>> places = null;
Place_JSON placeJson = new Place_JSON();
try {
jObject = new JSONObject(jsonData[0]);
places = placeJson.parse(jObject);
} catch (Exception e) {
Log.d("Exception", e.toString());
}
return places;
}
// Executed after the complete execution of doInBackground() method
@Override
protected void onPostExecute(List<HashMap<String, String>> list) {
Log.d("Map", "list size: " + list.size());
// Clears all the existing markers;
mGoogleMap.clear();
for (int i = 0; i < list.size(); i++) {
// Creating a marker
MarkerOptions markerOptions = new MarkerOptions();
// Getting a place from the places list
HashMap<String, String> hmPlace = list.get(i);
// Getting latitude of the place
double lat = Double.parseDouble(hmPlace.get("lat"));
// Getting longitude of the place
double lng = Double.parseDouble(hmPlace.get("lng"));
// Getting name
String name = hmPlace.get("place_name");
Log.d("Map", "place: " + name);
// Getting vicinity
String vicinity = hmPlace.get("vicinity");
LatLng latLng = new LatLng(lat, lng);
// Setting the position for the marker
markerOptions.position(latLng);
markerOptions.title(name + " : " + vicinity);
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
// Placing a marker on the touched position
Marker m = mGoogleMap.addMarker(markerOptions);
}
}
}
public class Place_JSON {
/**
* Receives a JSONObject and returns a list
*/
public List<HashMap<String, String>> parse(JSONObject jObject) {
JSONArray jPlaces = null;
try {
/** Retrieves all the elements in the 'places' array */
jPlaces = jObject.getJSONArray("results");
} catch (JSONException e) {
e.printStackTrace();
}
/** Invoking getPlaces with the array of json object
* where each json object represent a place
*/
return getPlaces(jPlaces);
}
private List<HashMap<String, String>> getPlaces(JSONArray jPlaces) {
int placesCount = jPlaces.length();
List<HashMap<String, String>> placesList = new ArrayList<HashMap<String, String>>();
HashMap<String, String> place = null;
/** Taking each place, parses and adds to list object */
for (int i = 0; i < placesCount; i++) {
try {
/** Call getPlace with place JSON object to parse the place */
place = getPlace((JSONObject) jPlaces.get(i));
placesList.add(place);
} catch (JSONException e) {
e.printStackTrace();
}
}
return placesList;
}
/**
* Parsing the Place JSON object
*/
private HashMap<String, String> getPlace(JSONObject jPlace)
{
HashMap<String, String> place = new HashMap<String, String>();
String placeName = "-NA-";
String vicinity = "-NA-";
String latitude = "";
String longitude = "";
String reference = "";
try {
// Extracting Place name, if available
if (!jPlace.isNull("name")) {
placeName = jPlace.getString("name");
}
// Extracting Place Vicinity, if available
if (!jPlace.isNull("vicinity")) {
vicinity = jPlace.getString("vicinity");
}
latitude = jPlace.getJSONObject("geometry").getJSONObject("location").getString("lat");
longitude = jPlace.getJSONObject("geometry").getJSONObject("location").getString("lng");
reference = jPlace.getString("reference");
place.put("place_name", placeName);
place.put("vicinity", vicinity);
place.put("lat", latitude);
place.put("lng", longitude);
place.put("reference", reference);
} catch (JSONException e) {
e.printStackTrace();
}
return place;
}
}
}
XML文件是：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:map="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/map"
tools:context="com.iotaconcepts.aurum.MapsActivity2"
android:name="com.google.android.gms.maps.SupportMapFragment"/>
</LinearLayout>
清单文件：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.iotaconcepts.aurum" >
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-library android:name="com.google.android.maps" />
<!-- uses-permission android:name="android.permission.INTERNET" / -->
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/MyMaterialTheme" >
<activity
android:name=".MainActivity"
android:label="Aurum" >
<intent-filter>
<action android:name="android.intent.action.MAINACTIVITY" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".LoginActivity"
android:label="Aurum"
android:theme="@style/ColorfulActionBarTheme" >
<intent-filter>
<action android:name="android.intent.action.LOGIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".Splash"
android:label="Aurum"
android:theme="@style/ColorfulActionBarTheme" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".Diagnosis"
android:label="Aurum"
android:theme="@style/Theme.Transparent" >
<intent-filter>
<action android:name="android.intent.action.DIAGNOSIS" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<!--
The API key for Google Maps-based APIs is defined as a string resource.
(See the file "res/values/google_maps_api.xml").
Note that the API key is linked to the encryption key used to sign the APK.
You need a different API key for each encryption key, including the release key that is used to
sign the APK for publishing.
You can define the keys for the debug and release targets in src/debug/ and src/release/.
-->
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="AIza*************************" />
<activity
android:name=".MapsActivity2"
android:label="@string/title_activity_maps2" >
</activity>
<activity android:name=".testactivity" >
</activity>
</application>
</manifest>
1 个答案:
答案 0 :(得分：4)
我只是运行你的代码并让它运行起来。看起来主要问题是查询网址中key与您的api密钥之间存在空格。
您也没有任何调用getMapAsync()的代码，因此您没有获得地图参考，并且不会调用onMapReady()。
此外，请务必在Places Web API中使用Server API密钥。
以下代码对我有用：
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
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 org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class MapsActivity2 extends AppCompatActivity implements OnMapReadyCallback
{
private GoogleMap mGoogleMap;
SupportMapFragment mapFrag;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
//Wrong one:
//setContentView(R.layout.activity_main);
//Use this one:
setContentView(R.layout.activity_maps2);
mapFrag = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFrag.getMapAsync(this);
}
@Override
public void onMapReady(GoogleMap googleMap)
{
mGoogleMap=googleMap;
mGoogleMap.setMyLocationEnabled(true);
StringBuilder sbValue = new StringBuilder(sbMethod());
PlacesTask placesTask = new PlacesTask();
placesTask.execute(sbValue.toString());
}
public StringBuilder sbMethod()
{
//use your current location here
double mLatitude = 37.77657;
double mLongitude = -122.417506;
StringBuilder sb = new StringBuilder("https://maps.googleapis.com/maps/api/place/nearbysearch/json?");
sb.append("location=" + mLatitude + "," + mLongitude);
sb.append("&radius=5000");
sb.append("&types=" + "restaurant");
sb.append("&sensor=true");
sb.append("&key=AIza******************************");
Log.d("Map", "url: " + sb.toString());
return sb;
}
private class PlacesTask extends AsyncTask<String, Integer, String>
{
String data = null;
// Invoked by execute() method of this object
@Override
protected String doInBackground(String... url) {
try {
data = downloadUrl(url[0]);
} catch (Exception e) {
Log.d("Background Task", e.toString());
}
return data;
}
// Executed after the complete execution of doInBackground() method
@Override
protected void onPostExecute(String result) {
ParserTask parserTask = new ParserTask();
// Start parsing the Google places in JSON format
// Invokes the "doInBackground()" method of the class ParserTask
parserTask.execute(result);
}
}
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", e.toString());
} finally {
iStream.close();
urlConnection.disconnect();
}
return data;
}
private class ParserTask extends AsyncTask<String, Integer, List<HashMap<String, String>>> {
JSONObject jObject;
// Invoked by execute() method of this object
@Override
protected List<HashMap<String, String>> doInBackground(String... jsonData) {
List<HashMap<String, String>> places = null;
Place_JSON placeJson = new Place_JSON();
try {
jObject = new JSONObject(jsonData[0]);
places = placeJson.parse(jObject);
} catch (Exception e) {
Log.d("Exception", e.toString());
}
return places;
}
// Executed after the complete execution of doInBackground() method
@Override
protected void onPostExecute(List<HashMap<String, String>> list) {
Log.d("Map", "list size: " + list.size());
// Clears all the existing markers;
mGoogleMap.clear();
for (int i = 0; i < list.size(); i++) {
// Creating a marker
MarkerOptions markerOptions = new MarkerOptions();
// Getting a place from the places list
HashMap<String, String> hmPlace = list.get(i);
// Getting latitude of the place
double lat = Double.parseDouble(hmPlace.get("lat"));
// Getting longitude of the place
double lng = Double.parseDouble(hmPlace.get("lng"));
// Getting name
String name = hmPlace.get("place_name");
Log.d("Map", "place: " + name);
// Getting vicinity
String vicinity = hmPlace.get("vicinity");
LatLng latLng = new LatLng(lat, lng);
// Setting the position for the marker
markerOptions.position(latLng);
markerOptions.title(name + " : " + vicinity);
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
// Placing a marker on the touched position
Marker m = mGoogleMap.addMarker(markerOptions);
}
}
}
public class Place_JSON {
/**
* Receives a JSONObject and returns a list
*/
public List<HashMap<String, String>> parse(JSONObject jObject) {
JSONArray jPlaces = null;
try {
/** Retrieves all the elements in the 'places' array */
jPlaces = jObject.getJSONArray("results");
} catch (JSONException e) {
e.printStackTrace();
}
/** Invoking getPlaces with the array of json object
* where each json object represent a place
*/
return getPlaces(jPlaces);
}
private List<HashMap<String, String>> getPlaces(JSONArray jPlaces) {
int placesCount = jPlaces.length();
List<HashMap<String, String>> placesList = new ArrayList<HashMap<String, String>>();
HashMap<String, String> place = null;
/** Taking each place, parses and adds to list object */
for (int i = 0; i < placesCount; i++) {
try {
/** Call getPlace with place JSON object to parse the place */
place = getPlace((JSONObject) jPlaces.get(i));
placesList.add(place);
} catch (JSONException e) {
e.printStackTrace();
}
}
return placesList;
}
/**
* Parsing the Place JSON object
*/
private HashMap<String, String> getPlace(JSONObject jPlace)
{
HashMap<String, String> place = new HashMap<String, String>();
String placeName = "-NA-";
String vicinity = "-NA-";
String latitude = "";
String longitude = "";
String reference = "";
try {
// Extracting Place name, if available
if (!jPlace.isNull("name")) {
placeName = jPlace.getString("name");
}
// Extracting Place Vicinity, if available
if (!jPlace.isNull("vicinity")) {
vicinity = jPlace.getString("vicinity");
}
latitude = jPlace.getJSONObject("geometry").getJSONObject("location").getString("lat");
longitude = jPlace.getJSONObject("geometry").getJSONObject("location").getString("lng");
reference = jPlace.getString("reference");
place.put("place_name", placeName);
place.put("vicinity", vicinity);
place.put("lat", latitude);
place.put("lng", longitude);
place.put("reference", reference);
} catch (JSONException e) {
e.printStackTrace();
}
return place;
}
}
}
activity_maps2.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:map="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/map"
tools:context="com.iotaconcepts.aurum.MapsActivity2"
android:name="com.google.android.gms.maps.SupportMapFragment"/>
</LinearLayout>
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