棒棒糖和棉花糖 gps 问题无法获取经度和纬度值，但在 21 以下的 api 上工作的代码相同
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【中文标题】棒棒糖和棉花糖 gps 问题无法获取经度和纬度值，但在 21 以下的 api 上工作的代码相同【英文标题】：lollipop and marshmallow gps issue not able to fetch longitude and latitude values but same code working on api below 21 【发布时间】：2017-02-09 07:39:11 【问题描述】：我在堆栈溢出中遇到了很多问题 **但无法解决我的问题，这不是任何垃圾邮件问题**
大家好，我遇到了与纬度和经度值相关的问题
我能够在 android 5.0 之前的所有 api 中获取值，但从 5.1 开始，我遇到了无法获取值的问题
这就是我正在使用的代码
我只添加了用于获取权限的代码
if (ContextCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
ActivityCompat.requestPermissions(MainActivity.this, new String[]Manifest.permission.ACCESS_FINE_LOCATION, 1);
else
Toast.makeText(mContext, "You need have granted permission", Toast.LENGTH_SHORT).show();
gps = new GPSTracker(mContext, MainActivity.this);
// Check if GPS enabled
if (gps.canGetLocation())
getlatitude = gps.getLatitude();
getlongitude = gps.getLongitude();
// \n is for new line
Toast.makeText(getApplicationContext(), "Your Location is - \nLat: " + getlatitude + "\nLong: " + getlongitude, Toast.LENGTH_LONG).show();
else
// Can't get location.
// GPS or network is not enabled.
// Ask user to enable GPS/network in settings.
gps.showSettingsAlert();
然后
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults)
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode)
case 1:
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED)
gps = new GPSTracker(mContext, MainActivity.this);
// Check if GPS enabled
if (gps.canGetLocation())
getlatitude = gps.getLatitude();
getlongitude = gps.getLongitude();
// \n is for new line
Toast.makeText(getApplicationContext(), "Your Location is - \nLat: " + getlatitude + "\nLong: " + getlongitude, Toast.LENGTH_LONG).show();
else
// Can't get location.
// GPS or network is not enabled.
// Ask user to enable GPS/network in settings.
gps.showSettingsAlert();
else
// permission denied, boo! Disable the
// functionality that depends on this permission.
Toast.makeText(mContext, "You need to grant permission", Toast.LENGTH_SHORT).show();
return;
但我还是得到了
Toast as Lat 0 Long 0
关于 gradle 的信息
我是面向 sdk 23 版本
在搜索了几个问题后，我知道我们需要获得这些值的许可才能在这方面明确地帮助我
清单文件
我已经添加了
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION/>
还有 网络提供商权限
**
现在我已经根据下面的更改添加了新代码
**
public class MainActivity extends Activity
Context context;
double latitude_user,longitude_user;
public static final int REQUEST_ID_MULTIPLE_PERMISSIONS = 1;
String[] permissions= new String[]
Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.ACCESS_FINE_LOCATION;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (checkPermissions())
GPSTracker gps;
gps = new GPSTracker(context);
latitude_user= gps.getLatitude();
longitude_user = gps.getLongitude();
Toast.makeText(MainActivity.this, "Permission has been granted"+latitude_user+" "+longitude_user, Toast.LENGTH_SHORT).show();
else
Toast.makeText(MainActivity.this, "Not granted", Toast.LENGTH_SHORT).show();
private boolean checkPermissions()
int result;
List<String> listPermissionsNeeded = new ArrayList<>();
for (String p:permissions)
result = ContextCompat.checkSelfPermission(getApplicationContext(),p);
if (result != PackageManager.PERMISSION_GRANTED)
listPermissionsNeeded.add(p);
if (!listPermissionsNeeded.isEmpty())
ActivityCompat.requestPermissions(this, listPermissionsNeeded.toArray(new String[listPermissionsNeeded.size()]),REQUEST_ID_MULTIPLE_PERMISSIONS);
return false;
return true;
还有 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;
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()
/**
* 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)
this.location = location;
getLatitude();
getLongitude();
@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;
【问题讨论】：
【参考方案1】：首先您需要检查设备的操作系统版本然后获得许可，这意味着如果设备操作系统版本为 6.0 或更高版本，则需要动态获得许可，但低于此则不需要。请您还注意 GPS 位置是开/关，所以我建议您在获得许可后，您还可以动态检查 GPS 位置是否处于开/关状态。请使用它在我的应用程序中运行的这个，希望您也能得到答案
public class GettingPermission extends AppCompatActivity
Activity activity;
public static final int REQUEST_ID_MULTIPLE_PERMISSIONS = 1;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
activity = GettingPermission.this;
if (Build.VERSION.SDK_INT >=23)
getPermission();
else
startApp();
private void startApp()
Intent i = new Intent(activity, GetLatLog.class)
activity.startActivity(i)
private void getPermission()
if (ContextCompat.checkSelfPermission(activity, Manifest.permission.ACCESS_COARSE_LOCATION)
+ ContextCompat.checkSelfPermission(activity, Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED)
Log.i("Permission is require first time", "...OK...getPermission() method!..if");
ActivityCompat.requestPermissions(activity,
new String[]Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.ACCESS_FINE_LOCATION,
REQUEST_ID_MULTIPLE_PERMISSIONS);
else
Log.i("Permission is already granted ", "...Ok...getPermission() method!..else");
startApp();
@Override
public void onRequestPermissionsResult(final int requestCode, @NonNull final String[] permissions, @NonNull final int[] grantResults)
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == REQUEST_PERMISSIONS)
if ((grantResults.length > 0) && (grantResults[0]+grantResults[1])
== PackageManager.PERMISSION_GRANTED)
// Permission granted.
Log.i("onRequestPermissionsResult()...","Permission granted");
startApp();
else
// User refused to grant permission.
Toast.makeText(StartActivity.this, "All Permission is required to use the Screen Recorder", Toast.LENGTH_LONG).show();
getPermission();
GetLatLog.java 文件是
public class GetLatLog extends AppCompatActivity
Activity activity;
private int ENABLE_LOCATION = 100;
double latitude = 0.0, longitude = 0.0;
private GPSTracker gps;
ProgressDialog pd;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.temp);
try
activity = GetLatLog.this;
locationManager = (LocationManager) activity.getSystemService(Context.LOCATION_SERVICE);
if (isLocationEnabled())
getLocation();
else
showSettingsAlert();
catch (Exception e)
e.printStackTrace();
protected LocationManager locationManager;
private boolean isLocationEnabled()
return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) ||
locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
private void getLocation()
try
if (isLocationEnabled())
gps = new GPSTracker(activity);
// check if GPS enabled
if(gps.canGetLocation())
latitude = gps.getLatitude();
longitude = gps.getLongitude();
Log.i("Location", ""+latitude + " : " + longitude);
if(latitude == 0.0 || longitude == 0.0)
retryGettingLocationDialog();
else
//startYour code here, You come here after getting lat and log.
else
Toast.makeText(activity , "Location Not Enabled", Toast.LENGTH_LONG).show();
else
Toast.makeText(activity , "GPS disabled. Cannot get location. Please enable it and try again!", Toast.LENGTH_LONG).show();
catch (Exception e)
e.printStackTrace();
public void showSettingsAlert()
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
activity.startActivityForResult(intent, ENABLE_LOCATION);
public void retryGettingLocationDialog()
retryGettingLocation();
private void retryGettingLocation()
try
new AsyncTask<Void, Void , Void>()
@Override
protected void onPreExecute()
try
pd = new ProgressDialog(activity);
pd.setCancelable(false);
pd.setMessage("Please while we retry getting your location...");
pd.show();
catch (Exception e)
e.printStackTrace();
super.onPreExecute();
@Override
protected Void doInBackground(Void... params)
try
Thread.sleep(1500);
catch (InterruptedException e)
e.printStackTrace();
return null;
@Override
protected void onPostExecute(Void aVoid)
super.onPostExecute(aVoid);
if(pd != null)
pd.cancel();
pd.dismiss();
pd = null;
getLocation();
.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void)null);
catch (Exception e)
e.printStackTrace();
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
super.onActivityResult(requestCode, resultCode, data);
try
//if (resultCode == Activity.RESULT_OK)
if(requestCode == ENABLE_LOCATION)
if (isLocationEnabled())
getLocation();
else
showSettingsAlert();
catch (Exception e)
e.printStackTrace();
【讨论】：
您可以在哪个设备上运行您的应用程序 我想在从 api 15 到 api 23 的所有 api 中运行 如果 API 级别 23，那么我们需要获得动态权限，否则不需要，正如我在回答中解释的那样，如果您的 API 级别低于 23，那么它也可以正常工作。请检查我的最新答案。它适用于所有 API 级别 嗨，我会检查更新的代码，你的旧代码对我有用在 api 5.0 中，您将在一天内通知您有关新代码的信息。.. 我也使用 genymotion 所有 api 直到 kitkat 工作，但棒棒糖和棉花糖模拟器根本没有开始无法启动虚拟设备错误，而其他设备工作正常以上是关于棒棒糖和棉花糖 gps 问题无法获取经度和纬度值，但在 21 以下的 api 上工作的代码相同的主要内容，如果未能解决你的问题，请参考以下文章
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