On pressing the logout button ,the app is checking whether location service is running or not .

On pressing the Check in button it disappears and reappears when the check out button is pressed .

On pressing the back button on the login activity the app exits .

Service starting only when the Check in button is pressed .

Check out button cannot be pressed outside range .

examples/example_bestshot/example/app/src/main/java/ru/Service/MyLocationService.java

@@ -65,11 +65,13 @@ public class MyLocationService extends Service {
                             /*Intent intent = new Intent(MainActivity.this,MyLocationService.class);
                             startService(intent);*/
 
-                if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
+                /*if (!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
                     OnGPS();
                 } else {
                     getLocation();
-                }
+                }*/
+
+                Toast.makeText(getApplicationContext(),"You are currently near location",Toast.LENGTH_LONG).show();
 
             }
         }, delay);
@@ -220,11 +222,11 @@ public class MyLocationService extends Service {
         {
             double lat=LocationGps.getLatitude();
             double longi=LocationGps.getLongitude();
-            /*double newLat = 22.5747;
-            double newLong = 88.4338;*/
+            double newLat = 22.5747;
+            double newLong = 88.4338;
 
-            double newLat = 22.5796;
-            double newLong = 88.4383;
+            /*double newLat = 22.5796;
+            double newLong = 88.4383;*/
 
             float[] results = new float[1];
             Location.distanceBetween(lat,longi,newLat,newLong,results);
@@ -261,6 +263,8 @@ public class MyLocationService extends Service {
 
             double newLat = 22.5747;
             double newLong = 88.4338;
+            /*double newLat = 22.5135;
+            double newLong = 88.4029;*/
 
             float[] results = new float[1];
             Location.distanceBetween(lat,longi,newLat,newLong,results);

examples/example_bestshot/example/app/src/main/java/ru/visionlab/femdemo/CheckInActivity.java

@@ -3,6 +3,7 @@ package ru.visionlab.femdemo;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.core.app.ActivityCompat;
 
+import android.app.ActivityManager;
 import android.app.AlertDialog;
 import android.app.ProgressDialog;
 import android.content.Context;
@@ -52,6 +53,8 @@ public class CheckInActivity extends AppCompatActivity {
     Handler handler = new Handler();
     Runnable runnable;
     int delay = 10000;
+
+    float distance;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -66,26 +69,33 @@ public class CheckInActivity extends AppCompatActivity {
                 /*Intent intent = new Intent(CheckInActivity.this, EmployeeActivity.class);
                 startActivity(intent);*/
 
-                //location();
+                location();
 
-                progressDialog = new ProgressDialog(CheckInActivity.this);
+                /*progressDialog = new ProgressDialog(CheckInActivity.this);
                 progressDialog.setTitle("");
                 progressDialog.setMessage("Loading this Content, please wait!");
                 progressDialog.show();
 
+                location();
+
                 startService(new Intent(CheckInActivity.this, MyLocationService.class));
-                progressDialog.dismiss();
+                progressDialog.dismiss();*/
+
+                btnCheckIn.setVisibility(View.INVISIBLE);
 
 
             }
         });
 
         btncheckOut = findViewById(R.id.btncheckOut);
+
+
         btncheckOut.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
                 Toast.makeText(CheckInActivity.this,"Stopping service",Toast.LENGTH_LONG).show();
                 stopService(new Intent(CheckInActivity.this, MyLocationService.class));
+                btnCheckIn.setVisibility(View.VISIBLE);
             }
         });
 
@@ -93,8 +103,26 @@ public class CheckInActivity extends AppCompatActivity {
         logout.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                Intent intent = new Intent(CheckInActivity.this, LoginActivity.class);
-                startActivity(intent);
+
+
+                if (isMyServiceRunning(MyLocationService.class)){
+                    new SweetAlertDialog(CheckInActivity.this, SweetAlertDialog.WARNING_TYPE)
+                            .setTitleText("Location service is running in the background")
+                            .setContentText("Please stop the service to logout")
+                            .setConfirmText("OK").setConfirmText("OK").setConfirmClickListener(new SweetAlertDialog.OnSweetClickListener() {
+                                @Override
+                                public void onClick(SweetAlertDialog sDialog) {
+                                    sDialog.dismissWithAnimation();
+                                }
+                            })
+                            .show();
+                }
+                else {
+                    Toast.makeText(CheckInActivity.this,"Logging out",Toast.LENGTH_LONG).show();
+                    Intent intent = new Intent(CheckInActivity.this, LoginActivity.class);
+                    startActivity(intent);
+                }
+
             }
         });
 
@@ -141,6 +169,16 @@ public class CheckInActivity extends AppCompatActivity {
 
     }
 
+    private boolean isMyServiceRunning(Class<?> serviceClass) {
+        ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
+        for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
+            if (serviceClass.getName().equals(service.service.getClassName())) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     public void location(){
         locationManager=(LocationManager) getSystemService(Context.LOCATION_SERVICE);
         //Check gps is enable or not
@@ -198,6 +236,20 @@ public class CheckInActivity extends AppCompatActivity {
                 double lat=LocationGps.getLatitude();
                 double longi=LocationGps.getLongitude();
 
+                double newLat = 22.5150;
+                double newLong = 88.3930;
+
+                float[] results = new float[1];
+                Location.distanceBetween(lat,longi,newLat,newLong,results);
+                distance = results[0];
+                Toast.makeText(this,String.valueOf(distance)+" metres from location",Toast.LENGTH_SHORT).show();
+                if(distance > 400){
+                    moreThanFour();
+                }
+                else{
+                    lessThanFour();
+                }
+
                 latitude=String.valueOf(lat);
                 longitude=String.valueOf(longi);
                 System.out.println("Position 1");
@@ -222,6 +274,7 @@ public class CheckInActivity extends AppCompatActivity {
                     moreThanFour();
                 }
                 else{
+
                     lessThanFour();
                 }
                 latitude=String.valueOf(lat);
@@ -252,6 +305,7 @@ public class CheckInActivity extends AppCompatActivity {
     }
 
     public void moreThanFour(){
+        btncheckOut.setClickable(false);
         new SweetAlertDialog(this, SweetAlertDialog.WARNING_TYPE)
                 .setTitleText("Are you sure you are near location?")
                 .setContentText("Please be in your precise location")
@@ -265,6 +319,16 @@ public class CheckInActivity extends AppCompatActivity {
     }
 
     public void lessThanFour(){
+        progressDialog = new ProgressDialog(CheckInActivity.this);
+        progressDialog.setTitle("");
+        progressDialog.setMessage("Loading this Content, please wait!");
+        progressDialog.show();
+
+
+
+        startService(new Intent(CheckInActivity.this, MyLocationService.class));
+        progressDialog.dismiss();
+
         new SweetAlertDialog(this, SweetAlertDialog.SUCCESS_TYPE)
                 .setTitleText("You are currently near location")
                 .setContentText("Attendance can be captured now")

examples/example_bestshot/example/app/src/main/java/ru/visionlab/femdemo/login/LoginActivity.java

@@ -79,6 +79,8 @@ public class LoginActivity extends BaseActivity {
 
     LinearLayoutCompat lay_licence_verify;
 
+    private long pressedTime;
+
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -465,6 +467,12 @@ public class LoginActivity extends BaseActivity {
 
     @Override
     public void onBackPressed () {
-
+        if (pressedTime + 2000 > System.currentTimeMillis()) {
+            super.onBackPressed();
+            finish();
+        } else {
+            Toast.makeText(getBaseContext(), "Press back again to exit", Toast.LENGTH_SHORT).show();
+        }
+        pressedTime = System.currentTimeMillis();
     }
 }