经度和Android的Latiude空 [英] Longitude and Latiude null in android
本文介绍了经度和Android的Latiude空的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个GPSTracker文件，但在版本的Android M IAM歌厅上的位置，零...我找你帮忙解决这个问题...请参阅下面的
在code片段的位置和网页视图在Google地图
公共类ComoChegar扩展片段{
EM presaID项目; 公共ComoChegar（）{
//必需的空公共构造
}
@覆盖
公共查看onCreateView（LayoutInflater充气器，容器的ViewGroup，
捆绑savedInstanceState）{
//充气的布局该片段
查看屏幕截图= inflater.inflate（R.layout.fragment_como_chegar，集装箱，FALSE）;
。包ID = getActivity（）getIntent（）getExtras（）。
字符串孝= id.getString（孝）;
如果（isOnline（））{
项目=新的EM presaID（孝）;
Autenticado（项目）;
}
其他
{
android.app.AlertDialog.Builder ALERTA =新android.app.AlertDialog.Builder（getActivity（））;
alerta.setMessage（VOCE ESTA SEM Acesso一个互联网POR青睐verifique SUASconfigurações，ativeØ的Wi-Fi欧修斯dadosmóveis）;
alerta.setPositiveButton（OK，NULL）;
alerta.show（）;
}
返回影视处;
} 公共无效Autenticado（EM presaID ID）
{
ServerRequests服务器=新ServerRequests（getActivity（））;
server.getEm preSA（ID，新GetEm presaID（）{
@覆盖
公共无效完成（EM presaID EM preSA）{
如果（EM preSA == NULL）{
ERRO（）;
}
其他{
GPSTracker GPS =新GPSTracker（getActivity（））;
清单＆LT;地址＆gt;地址;
双纬度= gps.getLatitude（）;
双经度= gps.getLongitude（）;
地理codeR地理codeR;
地理codeR =新的地缘codeR（getActivity（），Locale.getDefault（））; 尝试{
如果（纬度== 0安培;＆安培;经度== 0）
{
gps.showSettingsAlert（）;
}
其他{
地址=地理coder.getFromLocation（纬度，经度，1）;
串地址= addresses.get（0）.getAddressLine（0）;
串城市= addresses.get（0）.getLocality（）;
字符串状态= addresses.get（0）.getAdminArea（）;
字符串国家= addresses.get（0）.getCountryName（）;
字符串邮政code = addresses.get（0）.getPostal code（）;
串knownName = addresses.get（0）.getFeatureName（）;
字符串赛达=+地址+，+城市+ - +邮政code;
字符串chegada =+ EM presa.endereco ++ EM presa.numero +，+ EM presa.bairro + - + EM presa.cidade;
。的WebView地图=（的WebView）getActivity（）findViewById（R.id.mapa）;
mapa.setWebViewClient（新WebViewClient（））;
mapa.getSettings（）setJavaScriptEnabled（真）。
串IDA = saida.replace（，+）;
串TREM = chegada.replace（，+）;
字符串URL =https://www.google.com/maps/dir/+纬度+，+经度+/+ TREM +;
mapa.loadUrl（URL）; }
}赶上（IOException异常五）{
e.printStackTrace（）;
} } }
}）; } 私人无效ERRO（）{
android.support.v7.app.AlertDialog.Builder ALERTA =新android.support.v7.app.AlertDialog.Builder（getActivity（））;
alerta.setMessage（埃罗AO Carregar dados做servidor）;
alerta.setPositiveButton（OK，NULL）;
alerta.show（）;
} 私人布尔isOnline（）{
ConnectivityManager厘米=
（ConnectivityManager）getActivity（）getSystemService（Context.CONNECTIVITY_SERVICE）。
NetInfo的的NetworkInfo = cm.getActiveNetworkInfo（）;
返回的NetInfo = NULL＆放大器;！＆安培; netInfo.isConnectedOrConnecting（）;
}
}
在GPSTracker类
公共类GPSTracker扩展服务实现LocationListener的{ 私人最终上下文mContext; //标志GPS状态
布尔isGPSEnabled = FALSE; //标志网络状态
布尔isNetworkEnabled = FALSE; //标志GPS状态
布尔canGetLocation = FALSE; 地点位置; // 位置
双纬度; //纬度
双经度; //经度 //最小距离改变米的更新
私有静态最后长MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; //10米 //毫秒更新之间的最短时间
私有静态最后长MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1分钟 //声明一个位置管理
受保护的LocationManager的LocationManager; 公共GPSTracker（上下文的背景下）{
this.mContext =背景;
的getLocation（）;
} 公共场所的getLocation（）{
尝试{
的LocationManager =（的LocationManager）mContext
.getSystemService（LOCATION_SERVICE）; //获取GPS状态
isGPSEnabled =的LocationManager
.isProviderEnabled（LocationManager.GPS_PROVIDER）; //获取网络状态
isNetworkEnabled =的LocationManager
.isProviderEnabled（LocationManager.NETWORK_PROVIDER）; 如果（isGPSEnabled＆安培;！＆安培;！isNetworkEnabled）{
//没有启用网络供应商
}其他{
this.canGetLocation = TRUE;
//首先从网络提供商处获取位置
如果（isNetworkEnabled）{
locationManager.requestLocationUpdates（
LocationManager.NETWORK_PROVIDER，
MIN_TIME_BW_UPDATES，
MIN_DISTANCE_CHANGE_FOR_UPDATES，这一点）;
Log.d（网络，网络）;
如果（的LocationManager！= NULL）{
位置=的LocationManager
.getLastKnownLocation（LocationManager.NETWORK_PROVIDER）;
如果（位置！= NULL）{
纬度= location.getLatitude（）;
经度= location.getLongitude（）;
}
}
}
//如果GPS功能的获得纬度/长期使用GPS服务
如果（isGPSEnabled）{
如果（位置== NULL）{
locationManager.requestLocationUpdates（
LocationManager.GPS_PROVIDER，
MIN_TIME_BW_UPDATES，
MIN_DISTANCE_CHANGE_FOR_UPDATES，这一点）;
Log.d（GPS已启用，GPS功能的）;
如果（的LocationManager！= NULL）{
位置=的LocationManager
.getLastKnownLocation（LocationManager.GPS_PROVIDER）;
如果（位置！= NULL）{
纬度= location.getLatitude（）;
经度= location.getLongitude（）;
}
}
}
}
} }赶上（例外五）{
e.printStackTrace（）;
} 返回的位置;
} / **
*停止使用GPS监听器
*调用此函数将停止在你的应用程序中使用GPS
* * /
公共无效stopUsingGPS（）{
如果（的LocationManager！= NULL）{
locationManager.removeUpdates（GPSTracker.this）;
}
} / **
*函数来获取纬度
* * /
公共双getLatitude（）{
如果（位置！= NULL）{
纬度= location.getLatitude（）;
} //返回纬度
返回纬度;
} / **
*函数来获取经度
* * /
公共双getLongitude（）{
如果（位置！= NULL）{
经度= location.getLongitude（）;
} //返回经度
返回经度;
} / **
*功能检查启用GPS / WIFI
* @返回布尔
* * /
公共布尔canGetLocation（）{
返回this.canGetLocation;
} / **
*功能，以显示设置警告对话框
*在pressing设置按钮将劳克设置选项
* * /
公共无效showSettingsAlert（）{
AlertDialog.Builder alertDialog =新AlertDialog.Builder（mContext）; //设置对话框标题
alertDialog.setTitle（ERRO）; //设置对话框留言
alertDialog.setMessage（GPS NAO ESTA ligado Gostaria德Checar NASConfigurações？）; //在pressing设置按钮
alertDialog.setPositiveButton（Configurações，新DialogInterface.OnClickListener（）{
公共无效的onClick（DialogInterface对话，诠释它）{
意向意图=新意图（Settings.ACTION_LOCATION_SOURCE_SETTINGS）;
mContext.startActivity（意向）;
}
}）; //在pressing取消按钮
alertDialog.setNegativeButton（Cancelar，新DialogInterface.OnClickListener（）{
公共无效的onClick（DialogInterface对话，诠释它）{
dialog.cancel（）;
}
}）; //显示警报信息
alertDialog.show（）;
} @覆盖
公共无效onLocationChanged（地点）{
} @覆盖
公共无效onProviderDisabled（字符串提供商）{
} @覆盖
公共无效onProviderEnabled（字符串提供商）{
} @覆盖
公共无效onStatusChanged（字符串提供商，INT地位，捆绑演员）{
} @覆盖
公众的IBinder onBind（意向为arg0）{
返回null;
}
}
解决方案
由于您的LocationListener的尝试使用唯一的网络没有GPS得到的位置，与此code片断： locationManager.getLastKnownLocation（的LocationManager。 NETWORK_PROVIDER）
可能你得到纬度和经度值但有延迟。我有同样的问题，然后我开始使用新的/最新位置服务API及用途：
GoogleApiClient。
首先，你需要执行
GoogleApiClient.ConnectionCallbacks，
GoogleApiClient.OnConnectionFailedListener，
LocationListener的
这是你的活动，想要获取位置数据。
定义
私人GoogleApiClient mGoogleApiClient;mGoogleApiClient =新GoogleApiClient.Builder（本）
.addApi（LocationServices.API）
.addConnectionCallbacks（本）
.addOnConnectionFailedListener（本）
。建立（）;
如果您还没有添加
＆LT;使用许可权`机器人：名字=android.permission.ACCESS_FINE_LOCATION/＆GT;`
到清单文件中，添加。
有关进一步的文档：<一href=\"https://developers.google.com/android/reference/com/google/android/gms/common/api/GoogleApiClient\" rel=\"nofollow\">https://developers.google.com/android/reference/com/google/android/gms/common/api/GoogleApiClient
I have a GPSTracker file but in the android M iam geting a zero on the locations... i ask for your help to solve this problem...see the code below
Fragment with the location and a webview to google maps
public class ComoChegar extends Fragment {
EmpresaID item;
public ComoChegar() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View tela = inflater.inflate(R.layout.fragment_como_chegar, container, false);
Bundle id = getActivity().getIntent().getExtras();
String Filial = id.getString("filial");
if (isOnline()) {
item = new EmpresaID(Filial);
Autenticado(item);
}
else
{
android.app.AlertDialog.Builder alerta = new android.app.AlertDialog.Builder(getActivity());
alerta.setMessage("Você está sem Acesso a Internet por favor verifique suas configurações, ative o wi-fi ou seus dados móveis");
alerta.setPositiveButton("OK", null);
alerta.show();
}
return tela;
}
public void Autenticado(EmpresaID id)
{
ServerRequests server = new ServerRequests(getActivity());
server.getEmpresa(id, new GetEmpresaID() {
@Override
public void done(EmpresaID empresa) {
if(empresa == null) {
Erro();
}
else {
GPSTracker gps = new GPSTracker(getActivity());
List<Address> addresses;
double latitude = gps.getLatitude();
double longitude = gps.getLongitude();
Geocoder geocoder;
geocoder = new Geocoder(getActivity(), Locale.getDefault());
try {
if(latitude == 0 && longitude == 0)
{
gps.showSettingsAlert();
}
else {
addresses = geocoder.getFromLocation(latitude, longitude, 1);
String address = addresses.get(0).getAddressLine(0);
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();
String saida = "" + address + "," + city + "-" + postalCode;
String chegada = "" + empresa.endereco + " " + empresa.numero + "," + empresa.bairro + "-" + empresa.cidade;
WebView mapa = (WebView) getActivity().findViewById(R.id.mapa);
mapa.setWebViewClient(new WebViewClient());
mapa.getSettings().setJavaScriptEnabled(true);
String ida = saida.replace(" ", "+");
String trem = chegada.replace(" ", "+");
String Url = "https://www.google.com/maps/dir/" + latitude + "," + longitude + "/" + trem + "";
mapa.loadUrl(Url);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
});
}
private void Erro() {
android.support.v7.app.AlertDialog.Builder alerta = new android.support.v7.app.AlertDialog.Builder(getActivity());
alerta.setMessage("Erro ao Carregar dados do servidor");
alerta.setPositiveButton("OK", null);
alerta.show();
}
private boolean isOnline() {
ConnectivityManager cm =
(ConnectivityManager) getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
return netInfo != null && netInfo.isConnectedOrConnecting();
}
}
the GPSTracker class
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 {
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(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("Erro");
// Setting Dialog Message
alertDialog.setMessage("GPS não está ligado. Gostaria de Checar nas Configurações?");
// On pressing Settings button
alertDialog.setPositiveButton("Configurações", 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("Cancelar", 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;
}
}
解决方案
Since your LocationListener tries to get location using only Network not GPS, with this code snippet: locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER)
probably you are getting latitude and longitude values but with a delay. I had the same problem then I begin to use new/latest Location service API and use:
GoogleApiClient.
First you need to implement
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener
from you activity that want to fetch the location data.
Define
private GoogleApiClient mGoogleApiClient;
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
If you haven't add
<uses-permission `android:name="android.permission.ACCESS_FINE_LOCATION"/>`
to the manifest file, add that.
For further documentation : https://developers.google.com/android/reference/com/google/android/gms/common/api/GoogleApiClient
这篇关于经度和Android的Latiude空的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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