Android check permission for LocationManager

Question

I m trying to get the GPS coordinates to display when I click a button in my activity layout  The following is the method that gets called when I click the button   public void getLocation View view        TextView tv    TextView  findViewById R id gps coord view       LocationManager lm    LocationManager  getSystemService LOCATION SERVICE       Location loc   lm getLastKnownLocation LocationManager GPS PROVIDER       tv setText  Latitude      loc getLatitude       nLongitude      loc getLongitude         I m getting an error that says      Call requires permission which may be rejected by user  Code should explicitly check to see if permission is available    I have already granted these permissions in my AndroidManifest  The error is taken care of and the app compiles when I add the following before calling lm getLastKnownLocation   if  checkSelfPermission Manifest permission ACCESS FINE LOCATION     PackageManager PERMISSION GRANTED          amp  amp  checkSelfPermission Manifest permission ACCESS COARSE LOCATION     PackageManager PERMISSION GRANTED        return      However  the app crashes when I press the button that calls getLocation when it s clicked  What is going on  Is there  better simpler way to grab the GPS coordinates of the device

User · Answer

Use my custome class to check or request permisson

public class Permissons {

        //Request Permisson
        public static void Request_STORAGE(Activity act,int code)
        {

            ActivityCompat.requestPermissions(act, new
                    String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE},code);
        }
        public static void Request_CAMERA(Activity act,int code)
        {
            ActivityCompat.requestPermissions(act, new
                    String[]{Manifest.permission.CAMERA},code);
        }
        public static void Request_FINE_LOCATION(Activity act,int code)
        {
            ActivityCompat.requestPermissions(act, new
                    String[]{Manifest.permission.ACCESS_FINE_LOCATION},code);
        }
        public static void Request_READ_SMS(Activity act,int code)
        {
            ActivityCompat.requestPermissions(act, new
                    String[]{Manifest.permission.READ_SMS},code);
        }
        public static void Request_READ_CONTACTS(Activity act,int code)
        {
            ActivityCompat.requestPermissions(act, new
                    String[]{Manifest.permission.READ_CONTACTS},code);
        }
        public static void Request_READ_CALENDAR(Activity act,int code)
        {
            ActivityCompat.requestPermissions(act, new
                    String[]{Manifest.permission.READ_CALENDAR},code);
        }
        public static void Request_RECORD_AUDIO(Activity act,int code)
        {
            ActivityCompat.requestPermissions(act, new
                    String[]{Manifest.permission.RECORD_AUDIO},code);
        }

        //Check Permisson
        public static boolean Check_STORAGE(Activity act)
        {
            int result = ContextCompat.checkSelfPermission(act,android.Manifest.permission.WRITE_EXTERNAL_STORAGE);
            return result == PackageManager.PERMISSION_GRANTED;
        }
        public static boolean Check_CAMERA(Activity act)
        {
            int result = ContextCompat.checkSelfPermission(act, Manifest.permission.CAMERA);
            return result == PackageManager.PERMISSION_GRANTED;
        }
        public static boolean Check_FINE_LOCATION(Activity act)
        {
            int result = ContextCompat.checkSelfPermission(act, Manifest.permission.ACCESS_FINE_LOCATION);
            return result == PackageManager.PERMISSION_GRANTED;
        }
        public static boolean Check_READ_SMS(Activity act)
        {
            int result = ContextCompat.checkSelfPermission(act, Manifest.permission.READ_SMS);
            return result == PackageManager.PERMISSION_GRANTED;
        }
        public static boolean Check_READ_CONTACTS(Activity act)
        {
            int result = ContextCompat.checkSelfPermission(act, Manifest.permission.READ_CONTACTS);
            return result == PackageManager.PERMISSION_GRANTED;
        }
        public static boolean Check_READ_CALENDAR(Activity act)
        {
            int result = ContextCompat.checkSelfPermission(act, Manifest.permission.READ_CALENDAR);
            return result == PackageManager.PERMISSION_GRANTED;
        }
        public static boolean Check_RECORD_AUDIO(Activity act)
        {
            int result = ContextCompat.checkSelfPermission(act, Manifest.permission.RECORD_AUDIO);
            return result == PackageManager.PERMISSION_GRANTED;
        }
    }

Example

if(!Permissons.Check_STORAGE(MainActivity.this))
{
   //if not permisson granted so request permisson with request code
   Permissons.Request_STORAGE(MainActivity.this,22);
}

User · Answer

The last part of the error message you quoted states     with   checkPermission   or explicitly handle a potential  SecurityException   A much quicker simpler way of checking if you have permissions is to surround your code with try         catch  SecurityException e     insert error handling code here     If you have permissions  the  try  part will execute  if you don t  the  catch  part will

User · Answer

If you simply want to check for permissions  rather than request for permissions   I wrote a simple extension like so  fun BaseActivity checkPermission permissionName  String   Boolean           return if  Build VERSION SDK INT  gt   23                val granted                   ContextCompat checkSelfPermission this  permissionName              granted    PackageManager PERMISSION GRANTED           else               val granted                   PermissionChecker checkSelfPermission this  permissionName              granted    PermissionChecker PERMISSION GRANTED                  Now  if I want to check for a permission I can simply pass in a permission like so  checkPermission Manifest permission READ CONTACTS

User · Answer

SIMPLE SOLUTION I wanted to support apps pre api 23 and instead of using checkSelfPermission I used a try   catch try      location   locationManager getLastKnownLocation LocationManager GPS PROVIDER     catch  SecurityException e       dialogGPS this getContext        lets the user know there is a problem with the gps

User · Answer

With Android API level  23   we are required to check for permissions   https   developer android com training permissions requesting html  I had your same problem  but the following worked for me and I am able to retrieve Location data successfully     1  Ensure you have your permissions listed in the Manifest     lt uses-permission android name  android permission ACCESS FINE LOCATION    gt   lt uses-permission android name  android permission ACCESS COARSE LOCATION   gt     2  Ensure you request permissions from the user    if   ContextCompat checkSelfPermission  this  android Manifest permission ACCESS COARSE LOCATION      PackageManager PERMISSION GRANTED                  ActivityCompat requestPermissions  this  new String      android Manifest permission ACCESS COARSE LOCATION                                                     LocationService MY PERMISSION ACCESS COURSE LOCATION                 3  Ensure you use ContextCompat as this has compatibility with older API levels     4  In your location service  or class that initializes your LocationManager and gets the last known location  we need to check the permissions    if   Build VERSION SDK INT  gt   23  amp  amp               ContextCompat checkSelfPermission  context  android Manifest permission ACCESS FINE LOCATION      PackageManager PERMISSION GRANTED  amp  amp               ContextCompat checkSelfPermission  context  android Manifest permission ACCESS COARSE LOCATION     PackageManager PERMISSION GRANTED                return                 5  This approach only worked for me after I included  TargetApi 23  at the top of my initLocationService method     6  I also added this to my gradle build    compile  com android support support-v4 23 0 1    Here is my LocationService for reference    public class LocationService implements LocationListener           The minimum distance to change updates in meters     private static final long MIN DISTANCE CHANGE FOR UPDATES   0     10 meters        The minimum time between updates in milliseconds     private static final long MIN TIME BW UPDATES   0   1000   60   1     1 minute      private final static boolean forceNetwork   false       private static LocationService instance   null       private LocationManager locationManager      public Location location      public double longitude      public double latitude                    Singleton implementation         return             public static LocationService getLocationManager Context context                if  instance    null                instance   new LocationService context                     return instance                        Local constructor             private LocationService  Context context                  initLocationService context            LogService log  LocationService created                            Sets up location service after permissions is granted              TargetApi 23      private void initLocationService Context context              if   Build VERSION SDK INT  gt   23  amp  amp               ContextCompat checkSelfPermission  context  android Manifest permission ACCESS FINE LOCATION      PackageManager PERMISSION GRANTED  amp  amp               ContextCompat checkSelfPermission  context  android Manifest permission ACCESS COARSE LOCATION     PackageManager PERMISSION GRANTED                return                       try                 this longitude   0 0              this latitude   0 0              this locationManager    LocationManager  context getSystemService Context LOCATION SERVICE                   Get GPS and network status             this isGPSEnabled   locationManager isProviderEnabled LocationManager GPS PROVIDER               this isNetworkEnabled   locationManager isProviderEnabled LocationManager NETWORK PROVIDER                if  forceNetwork  isGPSEnabled   false               if   isNetworkEnabled  amp  amp   isGPSEnabled                          cannot get location                 this locationServiceAvailable   false                              else                               this locationServiceAvailable   true                   if  isNetworkEnabled                        locationManager requestLocationUpdates LocationManager NETWORK PROVIDER                              MIN TIME BW UPDATES                              MIN DISTANCE CHANGE FOR UPDATES  this                       if  locationManager    null                              location   locationManager getLastKnownLocation LocationManager NETWORK PROVIDER                           updateCoordinates                                             end if                  if  isGPSEnabled                         locationManager requestLocationUpdates LocationManager GPS PROVIDER                              MIN TIME BW UPDATES                              MIN DISTANCE CHANGE FOR UPDATES  this                        if  locationManager    null                             location   locationManager getLastKnownLocation LocationManager GPS PROVIDER                           updateCoordinates                                                                    catch  Exception ex                 LogService log   Error creating location service      ex getMessage                                     Override     public void onLocationChanged Location location                   do stuff here with location object            I tested with an Android Lollipop device so far only   Hope this works for you

User · Answer

if you are working on dynamic permissions and any permission like ACCESS FINE LOCATION ACCESS COARSE LOCATION giving error  cannot resolve method PERMISSION NAME  in this case write you code with permission name and then rebuild your project this will regenerate the manifest Manifest permission  file

[android] Android check permission for LocationManager

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