Disable notifications for android oreo and above

This is a regression of updating sdk version to 28, Needs to fixed separately

Author: shobhitagarwal1612

skunkworks_crow/src/main/java/org/odk/share/activities/SendActivity.java

@@ -241,7 +241,9 @@ private void stopHotspotAlertDialog() {
 
     private void stopHotspot() {
         if (isHotspotRunning) {
-            wifiHotspot.disableHotspot();
+            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
+                wifiHotspot.disableHotspot();
+            }
         }
 
         senderService.cancel();

skunkworks_crow/src/main/java/org/odk/share/services/HotspotService.java

@@ -24,13 +24,11 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.os.Build;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.Message;
 
-import androidx.annotation.Nullable;
-import androidx.core.app.NotificationCompat;
-
 import org.odk.share.R;
 import org.odk.share.activities.MainActivity;
 import org.odk.share.application.Share;
@@ -41,6 +39,8 @@
 
 import javax.inject.Inject;
 
+import androidx.annotation.Nullable;
+import androidx.core.app.NotificationCompat;
 import io.reactivex.disposables.CompositeDisposable;
 
 
@@ -91,7 +91,10 @@ public void onReceive(Context context, Intent intent) {
         };
         state = new HotspotState(this);
         registerReceiver(stopReceiver, new IntentFilter(ACTION_STOP));
-        startForeground(HOTSPOT_NOTIFICATION_ID, buildForegroundNotification(getString(R.string.hotspot_start), false));
+
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
+            startForeground(HOTSPOT_NOTIFICATION_ID, buildForegroundNotification(getString(R.string.hotspot_start), false));
+        }
     }
 
     @Override