"how to ask for location permission in android studio?" Code Answer

from api level 23 (android 6.0 marshmallow) we need to ask run-time permission from the user-end. you can do this in two steps.

1) add these two permissions in androidmanifest.xml file.

<uses-permission android:name="android.permission.access_fine_location"/>

<uses-permission android:name="android.permission.access_coarse_location"/>

example:

<manifest xlmns:android...>
 ...
 <uses-permission android:name="android.permission.access_fine_location" />
 <uses-permission android:name="android.permission.access_coarse_location" /> 
 <application ...
</manifest>

2) put this code block inside class where you need to get current location

    if ( build.version.sdk_int >= 23){
              if (activitycompat.checkselfpermission(this, android.manifest.permission.access_fine_location) !=
                          packagemanager.permission_granted  ){
                   requestpermissions(new string[]{
                                      android.manifest.permission.access_fine_location},
                              request_code_ask_permissions);
                      return ;
                  }
              }

              getlocation();

  }
  //get access to location permission
  final private int request_code_ask_permissions = 123;



  @override
  public void onrequestpermissionsresult(int requestcode, string[] permissions, int[] grantresults) {
      switch (requestcode) {
          case request_code_ask_permissions:
              if (grantresults[0] == packagemanager.permission_granted) {
                  getlocation();
              } else {
                  // permission denied
                  toast.maketext( this,"your message" , toast.length_short)
                          .show();
              }
              break;
          default:
              super.onrequestpermissionsresult(requestcode, permissions, grantresults);
      }
  }

//get location
public  void getlocation(){
      locationmanager locationmanager = (locationmanager) getsystemservice(location_service);
          location mylocation=locationmanager.getlastknownlocation(locationmanager.gps_provider);
              if (mylocation == null) 
              {
                  mylocation = locationmanager.getlastknownlocation(locationmanager.passive_provider);

              }
  }