我试图使用foursquare api到达附近的地方，但是在启动我的应用程序时我崩溃了！
我制作了我的GPSTracker，Googlemap部分并使用了foursquare api，但我没有工作！ 任何的想法 ？ ！
package com.company.nearbyplaces_2;
import java.io.BufferedInputStream;
import java.io.InputStream;
import java.util.ArrayList;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.ByteArrayBuffer;
import org.json.JSONArray;
import org.json.JSONObject;
import android.app.Activity;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
import com.google.android.gms.maps.*;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
public class MainActivity extends Activity {
ArrayList<FoursquareModel> venuesList;
final String CLIENT_ID = "**********************************************";
final String CLIENT_SECRET = "*******************************************************";
// we will need to take the latitude and the logntitude from a certain point
protected LocationManager locationManager;
protected LocationListener locationListener;
protected double latitude, longitude;
ArrayAdapter<String> myAdapter;
// GPSTracker class
GPSTracker gps;
// Near BY ListView
ListView lv;
// Google Map
private GoogleMap googleMap;
// ArrayList & array list adapter to set listview
ArrayList<FoursquareModel> _commentList = new ArrayList<FoursquareModel>();
NearbyListAdapter _nearByListAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lv = (ListView) findViewById(R.id.listview);
gps = new GPSTracker(this);
// check if GPS enabled
if (gps.canGetLocation()) {
latitude = gps.getLatitude();
longitude = gps.getLongitude();
} else {
gps.showSettingsAlert();
}
try {
// Loading map
initilizeMap();
googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(
new LatLng(latitude, longitude), 13));
CameraPosition cameraPosition = new CameraPosition.Builder()
.target(new LatLng(latitude, longitude)) // Sets the center
// of the map to
// location user
.zoom(17) // Sets the zoom
.build(); // Creates a CameraPosition from the builder
googleMap.animateCamera(CameraUpdateFactory
.newCameraPosition(cameraPosition));
// googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
googleMap.setMyLocationEnabled(true);
googleMap.getUiSettings().setCompassEnabled(true);
} catch (Exception e) {
e.printStackTrace();
}
// start the AsyncTask that makes the call for the venus search.
new fourquare().execute();
}
private void initilizeMap() {
if (googleMap == null) {
googleMap = ((MapFragment) getFragmentManager().findFragmentById(
R.id.map)).getMap();
// check if map is created successfully or not
if (googleMap == null) {
Toast.makeText(getApplicationContext(),
"Sorry! unable to create maps", Toast.LENGTH_SHORT)
.show();
}
}
}
private class fourquare extends AsyncTask<View, Void, String> {
String temp;
@Override
protected String doInBackground(View... urls) {
// make Call to the url
temp = makeCall("https://api.foursquare.com/v2/venues/search?client_id="
+ CLIENT_ID
+ "&client_secret="
+ CLIENT_SECRET
+ "&v=20130815&ll="
+ String.valueOf(latitude)
+ ","
+ String.valueOf(longitude));
Log.e("Link ---- > ", temp);
return "";
}
@Override
protected void onPreExecute() {
// we can start a progress bar here
}
@Override
protected void onPostExecute(String result) {
if (temp == null) {
// we have an error to the call
// we can also stop the progress bar
} else {
// all things went right
// parseFoursquare venues search result
venuesList = (ArrayList<FoursquareModel>) parseFoursquare(temp);
// set the results to the list
// and show them in the xml
_nearByListAdapter = new NearbyListAdapter(getBaseContext(), 0,
venuesList);
lv.setAdapter(_nearByListAdapter);
for (FoursquareModel model : venuesList) {
// create marker
MarkerOptions marker = new MarkerOptions().position(
new LatLng(model.getLatitude(), model
.getLongtitude())).title(model.getName());
// Changing marker icon
marker.icon(BitmapDescriptorFactory
.defaultMarker(BitmapDescriptorFactory.HUE_GREEN));
// adding marker
googleMap.addMarker(marker);
}
}
}
}
public static String makeCall(String url) {
// string buffers the url
StringBuffer buffer_string = new StringBuffer(url);
String replyString = "";
// instanciate an HttpClient
HttpClient httpclient = new DefaultHttpClient();
// instanciate an HttpGet
HttpGet httpget = new HttpGet(buffer_string.toString());
try {
// get the responce of the httpclient execution of the url
HttpResponse response = httpclient.execute(httpget);
InputStream is = response.getEntity().getContent();
// buffer input stream the result
BufferedInputStream bis = new BufferedInputStream(is);
ByteArrayBuffer baf = new ByteArrayBuffer(20);
int current = 0;
while ((current = bis.read()) != -1) {
baf.append((byte) current);
}
// the result as a string is ready for parsing
replyString = new String(baf.toByteArray());
} catch (Exception e) {
e.printStackTrace();
}
// trim the whitespaces
return replyString.trim();
}
private static ArrayList<FoursquareModel> parseFoursquare(
final String response) {
ArrayList<FoursquareModel> temp = new ArrayList<FoursquareModel>();
try {
// make an jsonObject in order to parse the response
JSONObject jsonObject = new JSONObject(response);
// make an jsonObject in order to parse the response
if (jsonObject.has("response")) {
if (jsonObject.getJSONObject("response").has("venues")) {
JSONArray jsonArray = jsonObject.getJSONObject("response")
.getJSONArray("venues");
for (int i = 0; i < jsonArray.length(); i++) {
FoursquareModel poi = new FoursquareModel();
try {
if (jsonArray.getJSONObject(i).has("name")) {
poi.setName(jsonArray.getJSONObject(i)
.getString("name"));
// We will get only those locations which has
// address
if (jsonArray.getJSONObject(i).has("location")) {
if (jsonArray.getJSONObject(i)
.getJSONObject("location")
.has("address")) {
poi.setAddress(jsonArray
.getJSONObject(i)
.getJSONObject("location")
.getString("address"));
if (jsonArray.getJSONObject(i)
.getJSONObject("location")
.has("lat")) {
poi.setLatitude(jsonArray
.getJSONObject(i)
.getJSONObject("location")
.getString("lat"));
}
if (jsonArray.getJSONObject(i)
.getJSONObject("location")
.has("lng")) {
poi.setLongtitude(jsonArray
.getJSONObject(i)
.getJSONObject("location")
.getString("lng"));
}
if (jsonArray.getJSONObject(i)
.getJSONObject("location")
.has("city")) {
poi.setCity(jsonArray
.getJSONObject(i)
.getJSONObject("location")
.getString("city"));
}
if (jsonArray.getJSONObject(i)
.getJSONObject("location")
.has("country")) {
poi.setCountry(jsonArray
.getJSONObject(i)
.getJSONObject("location")
.getString("country"));
}
if (jsonArray.getJSONObject(i).has(
"categories")) {
if (jsonArray.getJSONObject(i)
.getJSONArray("categories")
.length() > 0) {
if (jsonArray
.getJSONObject(i)
.getJSONArray(
"categories")
.getJSONObject(0)
.has("name")) {
poi.setCategory(jsonArray
.getJSONObject(i)
.getJSONArray(
"categories")
.getJSONObject(0)
.getString("name"));
}
if (jsonArray
.getJSONObject(i)
.getJSONArray(
"categories")
.getJSONObject(0)
.has("id")) {
poi.setCategoryID(jsonArray
.getJSONObject(i)
.getJSONArray(
"categories")
.getJSONObject(0)
.getString("id"));
}
if (jsonArray
.getJSONObject(i)
.getJSONArray(
"categories")
.getJSONObject(0)
.has("icon")) {
poi.setCategoryIcon(jsonArray
.getJSONObject(i)
.getJSONArray(
"categories")
.getJSONObject(0)
.getJSONObject(
"icon")
.getString("prefix")
+ "bg_32.png");
}
}
}
temp.add(poi);
}
}
}
} catch (Exception e) {
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return temp;
}
}
package com.company.nearbyplaces_2;
import android.app.AlertDialog;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.os.Bundle;
import android.os.IBinder;
import android.provider.Settings;
import android.support.v4.content.ContextCompat;
import android.util.Log;
public class GPSTracker extends Service implements LocationListener {
private final Context mContext;
// flag for GPS status
boolean isGPSEnabled = false;
// flag for network status
boolean isNetworkEnabled = false;
// flag for GPS status
boolean canGetLocation = false;
Location location; // location
double latitude; // latitude
double longitude; // longitude
// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
// Declaring a Location Manager
protected LocationManager locationManager;
public GPSTracker(Context context) {
this.mContext = context;
getLocation();
}
public Location getLocation() {
try {
if ( Build.VERSION.SDK_INT >= 23 &&
ContextCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission( this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
{ }
locationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
// getting GPS status
isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
// no network provider is enabled
} else {
this.canGetLocation = true;
// First get location from Network Provider
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("Network", "Network");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
// if GPS Enabled get lat/long using GPS Services
if (isGPSEnabled) {
if (location == null) {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS Enabled", "GPS Enabled");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
return location;
}
/**
* Stop using GPS listener Calling this function will stop using GPS in your
* app
* */
public void stopUsingGPS() {
if ( Build.VERSION.SDK_INT >= 23 &&
ContextCompat.checkSelfPermission( this, android.Manifest.permission.ACCESS_FINE_LOCATION ) != PackageManager.PERMISSION_GRANTED &&
ContextCompat.checkSelfPermission( this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
{ }
if (locationManager != null) {
locationManager.removeUpdates(GPSTracker.this);
}
}
/**
* Function to get latitude
* */
public double getLatitude() {
if (location != null) {
latitude = location.getLatitude();
}
// return latitude
return latitude;
}
/**
* Function to get longitude
* */
public double getLongitude() {
if (location != null) {
longitude = location.getLongitude();
}
// return longitude
return longitude;
}
/**
* Function to check GPS/wifi enabled
*
* @return boolean
* */
public boolean canGetLocation() {
return this.canGetLocation;
}
/**
* Function to show settings alert dialog On pressing Settings button will
* lauch Settings Options
* */
public void showSettingsAlert() {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
// Setting Dialog Title
alertDialog.setTitle("GPS is settings");
// Setting Dialog Message
alertDialog
.setMessage("GPS is not enabled. Do you want to go to settings menu?");
// On pressing Settings button
alertDialog.setPositiveButton("Settings",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(
Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(intent);
}
});
// on pressing cancel button
alertDialog.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
}
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
}
package com.company.nearbyplaces_2;
public class FoursquareModel {
private String name;
private String city;
private String longtitude,latitude,address,country;
private String icon;
private String category,category_id;
public FoursquareModel(String name,String city,String longtitude,String latitude,String address,String country,String category) {
this.name = name;
this.city = city;
this.longtitude = longtitude;
this.latitude = latitude;
this.address= address;
this.country = country;
this.setCategory(category);
}
public FoursquareModel() {
this.name = "";
this.city = "";
this.longtitude = "";
this.latitude = "";
this.address= "";
this.country = "";
this.setCategory("");
}
public String getCity() {
if (city.length() > 0) {
return city;
}
return city;
}
public void setCity(String city) {
if (city != null) {
this.city = city.replaceAll("\\(", "").replaceAll("\\)", "");
;
}
}
public void setCategoryIcon(String icon)
{
this.icon = icon;
}
public String getCategoryIcon()
{
return this.icon;
}
public void setCategoryID(String category_id)
{
this.category_id = category_id;
}
public String getCategoryID()
{
return this.category_id;
}
public void setAddress(String address)
{
this.address = address;
}
public String getAddress()
{
return this.address;
}
public void setCountry(String country)
{
this.country = country;
}
public String getCountry()
{
return this.country;
}
public void setLongtitude(String longtitude)
{
this.longtitude = longtitude;
}
public double getLongtitude( )
{
return Double.parseDouble(this.longtitude) ;
}
public void setLatitude(String latitude)
{
this.latitude = latitude;
}
public double getLatitude( )
{
return Double.parseDouble(this.latitude) ;
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
}
package com.company.nearbyplaces_2;
import java.util.ArrayList;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
// List Adapter for NearBy ListView
public class NearbyListAdapter extends ArrayAdapter<FoursquareModel> {
ArrayList<FoursquareModel> mNearByList ;
public NearbyListAdapter(Context context, int textViewResourceId,
ArrayList<FoursquareModel> objects) {
super(context, textViewResourceId, objects);
this.mNearByList = objects;
// TODO Auto-generated constructor stub
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View single_row = inflater.inflate(R.layout.row_layout, null,true);
TextView tv_name = (TextView) single_row.findViewById(R.id.tv_name);
TextView tv_address = (TextView) single_row.findViewById(R.id.tv_address);
tv_name.setText(mNearByList.get(position).getName());
tv_address.setText(mNearByList.get(position).getAddress());
return single_row;
}
}
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.company.nearbyplaces_2" >
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="**********************" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme" >
<activity android:name=".MainActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.1"
defaultConfig {
applicationId "com.company.nearbyplaces_2"
minSdkVersion 15
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
android {
useLibrary 'org.apache.http.legacy'
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
compile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.0.1'
compile 'com.foursquare:foursquare-android-oauth:1.0.3'
compile 'com.google.android.gms:play-services:8.1.0'
compile 'com.android.support:design:23.0.1'
}
<LinearLayout 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:background="#ffffff"
android:orientation="vertical" >
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="168dp" />
</FrameLayout>
<TextView
android:id="@+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="OR SELECT FROM NEARBY PLACES"
android:textColor="#29a3c7"
android:paddingTop="5dp"
android:textSize="18dp"
android:paddingBottom="5dp"/>
<View android:layout_width="match_parent"
android:layout_height="2dp"
android:background="#29a3c7"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"/>
<ListView
android:id="@+id/listview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:headerDividersEnabled="true" >"
</ListView>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#cccccc"
>
<LinearLayout android:layout_width="match_parent"
android:layout_height="60dp"
android:orientation="horizontal"
android:background="#ffffff">
<ImageView
android:layout_marginLeft="10dp"
android:layout_width="32dp"
android:layout_height="32dp"
android:layout_gravity="center"
android:src="@android:drawable/alert_dark_frame" />
<LinearLayout android:layout_width="match_parent"
android:layout_marginLeft="10dp"
android:layout_height="60dp"
android:gravity="center_vertical"
android:orientation="vertical"
android:background="#ffffff">
<TextView
android:id="@+id/tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:paddingLeft="2dp"
android:textSize="18dp"
android:maxLines="1"
android:ellipsize="end"/>
<TextView
android:id="@+id/tv_address"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:paddingLeft="4dp"
android:textColor="#676666"
android:maxLines="1"
android:ellipsize="end"/>
答案 0 :(得分：0)
java.lang.RuntimeException: API key not found. Check that <meta-data android:name="com.google.android.geo.API_KEY" android:value="your API key"/> is in the <application> element of AndroidManifest.xml
移动
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="..."/>
<manifest>元素内的根<application>元素的元素。