我正在编写一个从谷歌地图获取完整位置的程序，我设法获得经度和经度，但是当谈到地址时，我做了所有在不同网站中提到的但我得到一个空列表。
以下是代码：
这是将地址保存在列表中的功能
public List<Address> getAddress() {
try {
Geocoder geocoder;
List<Address> addresses;
double latitude, longitude;
latitude = Double.parseDouble(lat);
longitude = Double.parseDouble(lng);
System.out.println(latitude + " / " + longitude);
geocoder = new Geocoder(this);
if (latitude != 0 || longitude != 0) {
addresses = geocoder.getFromLocation(latitude ,
longitude, 2);
return addresses;
} else {
Toast.makeText(this, "latitude and longitude are null",
Toast.LENGTH_LONG).show();
return null;
}
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
这是调用它的函数：
@Override
public void onLocationChanged(Location location) {
lng = location.getLongitude() + "";
lat = location.getLatitude() + "";
try
{
getAddress();
}
catch (Exception e)
{
System.out.println("Can't Call getAddress()");
}
gotoLocation(location);
}
每次调用onLocationChanged（）时，这都是给定的错误
06-16 12：06：23.595：W / System.err（28123）：java.lang.IndexOutOfBoundsException：索引0无效，大小为0 06-16 12：06：23.595：W / System.err（28123）：at java.util.ArrayList.throwIndexOutOfBoundsException（ArrayList.java:255） 06-16 12：06：23.595：W / System.err（28123）：at java.util.ArrayList.get（ArrayList.java:308） 06-16 12：06：23.595：W / System.err（28123）：at com.MOS.fastfood.MapActivity.getAddress（MapActivity.java:559） 06-16 12：06：23.595：W / System.err（28123）：at com.MOS.fastfood.MapActivity.onLocationChanged（MapActivity.java:522） 06-16 12：06：23.595：W / System.err（28123）：at com.google.android.gms.internal.zzpe $ zza.handleMessage（Unknown Source） 06-16 12：06：23.595：W / System.err（28123）：在android.os.Handler.dispatchMessage（Handler.java:99） 06-16 12：06：23.600：W / System.err（28123）：在android.os.Looper.loop（Looper.java:176） 06-16 12：06：23.600：W / System.err（28123）：在android.app.ActivityThread.main（ActivityThread.java:5419） 06-16 12：06：23.600：W / System.err（28123）：at java.lang.reflect.Method.invokeNative（Native Method） 06-16 12：06：23.600：W / System.err（28123）：at java.lang.reflect.Method.invoke（Method.java:525） 06-16 12：06：23.600：W / System.err（28123）：at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:1046） 06-16 12：06：23.600：W / System.err（28123）：at com.android.internal.os.ZygoteInit.main（ZygoteInit.java:862） 06-16 12：06：23.600：W / System.err（28123）：at dalvik.system.NativeStart.main（Native Method）
这是清单
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.MOS.fastfood"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="22" />
<!-- added permission manually to reveice MAP -->
<permission
android:name="com.MOS.fastfood.permission.MAPS_RECEIVE"
android:protectionLevel="signature" >
</permission>
<!-- permissions to access internet -->
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<!-- important permissions to fetch map from google -->
<uses-permission android:name="com.MOS.fastfood.permission.MAPS_RECEIVE" />
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<!-- only devices that support version 2.0 of openGL can download, for graphics -->
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<!-- two permissions used to determine the current location using network towers and gps -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- ADDING THE DEBUGGING KEY -->
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="***" />
<!-- THIS META DATA ALLOWS "ISGOOGLEPLAYSERVICES ENABLED" TO FUNCTION WITHOUT CRASH -->
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<activity
android:name=".AddRestaurantActivity"
android:label="@string/title_activity_add_restaurant" >
</activity>
<activity
android:name=".FacebookLoginActivity"
android:label="@string/title_activity_facebook_login" >
</activity>
<activity
android:name=".ListActivity"
android:label="@string/title_activity_list" >
</activity>
<activity
android:name=".MapActivity"
android:label="@string/title_activity_map" >
</activity>
<activity
android:name=".RestaurantInfoActivity"
android:label="@string/title_activity_rate" >
</activity>
<activity
android:name=".Loader"
android:label="@string/title_activity_loader" >
</activity>
</application>
</manifest>
答案 0 :(得分：1)
试试此代码
Geocoder geocoder;
List<Address> addresses;
geocoder = new Geocoder(this, Locale.getDefault());
addresses = geocoder.getFromLocation(latitude, longitude, 1); // Here 1 represent max location result to returned, by documents it recommended 1 to 5
String address = addresses.get(0).getAddressLine(0); // If any additional address line present than only, check with max available address lines by getMaxAddressLineIndex()
String city = addresses.get(0).getLocality();
String state = addresses.get(0).getAdminArea();
String country = addresses.get(0).getCountryName();
String postalCode = addresses.get(0).getPostalCode();
String knownName = addresses.get(0).getFeatureName();
答案 1 :(得分：0)
这是为我工作的课程。
public class SubscriberDetails extends Activity implements GooglePlayServicesClient.ConnectionCallbacks,
GooglePlayServicesClient.OnConnectionFailedListener,OnEditorActionListener{
private String finalAddress = "";
//GPS
private boolean statusOfGPS = false;
//GPS listener
public static Double _latitudeValue = null;
public static Double _longitudeValue = null;
GPSTracker gps;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.subscriber_detail);
gps = new GPSTracker(this);
_latitudeValue = gps.getLatitude();
_longitudeValue = gps.getLongitude();
(new GetAddressTask(this)).execute();
}
/*
* Following is a subclass of AsyncTask which has been used to get
* address corresponding to the given latitude & longitude.
*/
private class GetAddressTask extends AsyncTask<Location, Void, String>{
Context mContext;
public GetAddressTask(Context context) {
super();
mContext = context;
}
/*
* When the task finishes, onPostExecute() displays the address.
*/
@Override
protected void onPostExecute(String address) {
}
@Override
protected String doInBackground(Location... params) {
try {
//current location
Geocoder geoCoder = new Geocoder(SubscriberDetails.this, Locale.getDefault());
StringBuilder builder = new StringBuilder();
List<Address> address = geoCoder.getFromLocation(_latitudeValue,
_longitudeValue, 1);
int maxLines = address.get(0).getMaxAddressLineIndex();
for (int i=0; i<maxLines; i++) {
String addressStr = address.get(0).getAddressLine(i);
builder.append(addressStr);
builder.append(" ");
}
finalAddress = builder.toString(); //This is the complete address.
System.out.println("Address = " +finalAddress);
} catch (IOException e) {
}
catch (NullPointerException e) {
}
System.out.println("Current Locations = " + finalAddress);
return finalAddress;
}
}// AsyncTask class
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
// Display the error code on failure
System.out.println("Connection Failure : " + connectionResult.getErrorCode());
}
@Override
public void onConnected(Bundle arg0) {
System.out.println("Connected");
}
@Override
public void onDisconnected() {
System.out.println("Disconnected. Please re-connect.");
}
}
和GPSTracker类：
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;
//flag for WIFi
boolean isWifiEnabled = 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 {
locationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
// getting GPS status
isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
isWifiEnabled = locationManager.isProviderEnabled(LocationManager.PASSIVE_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled&&!isWifiEnabled) {
// no network provider is enabled
} else {
this.canGetLocation = true;
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();
SubscriberDetails._latitudeValue = latitude;
SubscriberDetails._longitudeValue = longitude;
}
}
}
// 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();
SubscriberDetails._latitudeValue = latitude;
SubscriberDetails._longitudeValue = longitude;
}
}
}
}
if (isWifiEnabled) {
if (location == null) {
locationManager.requestLocationUpdates(
LocationManager.PASSIVE_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS Enabled", "GPS Enabled");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.PASSIVE_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
SubscriberDetails._latitudeValue = latitude;
SubscriberDetails._longitudeValue = longitude;
}
}
}
}
}
} catch (Exception e) {
}
return location;
}
/**
* Stop using GPS listener Calling this function will stop using GPS in your
* app.
* */
public void stopUsingGPS() {
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 DialogHelp Title
alertDialog.setTitle("GPS is settings");
// Setting DialogHelp 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) {
float bestAccuracy = -1f;
if (location.getAccuracy() != 0.0f
&& (location.getAccuracy() < bestAccuracy) || bestAccuracy == -1f) {
locationManager.removeUpdates(this);
}
bestAccuracy = location.getAccuracy();
}
@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;
}
public float getAccurecy()
{
return location.getAccuracy();
}
}