created a project on one signal.
I can send to php notification on my phone.
The problem comes when it arrives more than one notification. The new notification replaces the previous notification (not yet read ).
How do you get instead say that Android has 2 unread notifications?
I have try write the same
$content = array(
"en" => 'text message test'
$fields = array(
'app_id' => "XXxxxxXX-xxxxXX-XXxxX-Xxxx-XxxxXXx",
'included_segments' => array('All'),
'data' => array("foo" => "bar"),
'headings' => array("en" => "Test message!!"),
'android_group' => 'TESTGROUP',
'android_group_message' => array("en" => "message"),
'contents' => $content
$fields = json_encode($fields);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://onesignal.com/api/v1/notifications");
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json',
'Authorization: Basic xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_HEADER, FALSE);
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
$response = curl_exec($ch);
$response = sendMessage();
android_group used to enable notification stacking only works for Android apps.
If you are you're web push with Chrome for Android the replacement behavior your seeing is expected and isn't configurable. Same behavior on Chrome for Desktop and Firefox.
android_group_message should contain $[notif_count] so the number of unread messages is seen. Example
array("en" => "You have $[notif_count] new messages")