Unselects last item visited on navigation drawer

Author: rob729

app/src/main/java/io/neurolab/main/NeuroLab.java

@@ -352,6 +352,7 @@ public boolean onNavigationItemSelected(@NonNull MenuItem item) {
         // Handle navigation view item clicks here.
         int id = item.getItemId();
 
+        item.setCheckable(false);
         if (id == R.id.nav_focus) {
             startActivity(new Intent(this, FocusParentActivity.class));
         } else if (id == R.id.nav_relax) {