do not show filter contact source dialog if theres no available sources

Author: tibbi

app/src/main/kotlin/com/simplemobiletools/contacts/dialogs/FilterContactSourcesDialog.kt

@@ -15,6 +15,10 @@ class FilterContactSourcesDialog(val activity: SimpleActivity, val callback: ()
 
     init {
         ContactsHelper(activity).getContactSources {
+            if (it.isEmpty()) {
+                return@getContactSources
+            }
+
             val selectedSources = activity.config.displayContactSources
             activity.runOnUiThread {
                 view.filter_contact_sources_list.adapter = FilterContactSourcesAdapter(activity, it, selectedSources)

app/src/main/kotlin/com/simplemobiletools/contacts/helpers/ContactsHelper.kt

@@ -231,7 +231,7 @@ class ContactsHelper(val activity: BaseSimpleActivity) {
                 cursor = activity.contentResolver.query(uri, projection, null, null, null)
                 if (cursor?.moveToFirst() == true) {
                     do {
-                        val name = cursor.getStringValue(ContactsContract.RawContacts.ACCOUNT_NAME)
+                        val name = cursor.getStringValue(ContactsContract.RawContacts.ACCOUNT_NAME) ?: continue
                         accounts.add(name)
                     } while (cursor.moveToNext())
                 }