Invitations: add a confirmation dialog for sent invitations.

app/src/main/java/com/etesync/syncadapter/ui/etebase/CollectionMembersFragment.kt

@@ -139,7 +139,15 @@ class AddMemberFragment(private val accountHolder: AccountHolder, private val ca
                                 doAsync {
                                     try {
                                         invitationManager.invite(cachedCollection.col, username, profile.pubkey, accessLevel)
-                                        uiThread { dismiss() }
+                                        uiThread {
+                                            AlertDialog.Builder(requireContext())
+                                                .setTitle(R.string.collection_members_add)
+                                                .setIcon(R.drawable.ic_account_add_dark)
+                                                .setMessage(R.string.collection_members_add_success)
+                                                .setPositiveButton(android.R.string.yes) { _, _ -> }
+                                                .show()
+                                            dismiss()
+                                        }
                                     } catch (e: EtebaseException) {
                                         uiThread { handleError(e.localizedMessage) }
                                     }

app/src/main/res/values/strings.xml

@@ -159,6 +159,7 @@
     <string name="collection_members_add">Invite user</string>
     <string name="collection_members_add_error">Error adding member</string>
     <string name="collection_members_adding">Inviting user</string>
+    <string name="collection_members_add_success">Invitation sent. User will be added once the invitation has been accepted.</string>
     <string name="trust_fingerprint_title">Verify security fingerprint</string>
     <string name="trust_fingerprint_body">Verify %s\'s security fingerprint to ensure the encryption is secure.</string>
     <string name="collection_members_error_user_not_found">User (%s) not found</string>