从服务器端向Android设备发送FCM消息

Question

随着新的更新,FCM现在将被使用.

我从git尝试了示例应用程序,它工作得很好.我可以从控制台发送通知.

但我想在触发某个事件后从服务器发送通知.我像GCM一样遵循相同的方法,但它不起作用.

05-20 20:40:58.941 30132-30919/com.google.firebase.quickstart.fcm E/AndroidRuntime: FATAL EXCEPTION: pool-1-thread-1
                                                                                    Process: com.google.firebase.quickstart.fcm, PID: 30132
                                                                                    java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.google.firebase.messaging.RemoteMessage$Notification.getBody()' on a null object reference
                                                                                        at com.google.firebase.quickstart.fcm.MyFirebaseMessagingService.onMessageReceived(MyFirebaseMessagingService.java:53)
                                                                                        at com.google.firebase.messaging.FirebaseMessagingService.zzo(Unknown Source)
                                                                                        at com.google.firebase.messaging.FirebaseMessagingService.zzn(Unknown Source)
                                                                                        at com.google.firebase.messaging.FirebaseMessagingService.zzm(Unknown Source)
                                                                                        at com.google.firebase.iid.zzb$2.run(Unknown Source)
                                                                                        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
                                                                                        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
                                                                                        at java.lang.Thread.run(Thread.java:818)
05-20 20:40:59.118 30132-30279/com.google.firebase.quickstart.fcm E/Surface: getSlotFromBufferLocked: unknown buffer: 0xb9e83390

我是按照这个PHP脚本发送通知的.如果我尝试执行脚本,我会得到以下结果.

{"multicast_id":4679427854122301046,"success":1,"failure":0,"canonical_ids":0,"results":[{"message_id":"0:1463757518309261%31bd1c96f9fd7ecd"}]}

注意:我通过他们的文档和修改代码是gist只有身体和标题.即便如此,它也无法正常工作.

Answer 1

您可以使用此完整代码

<?php

function sendFCM($mess,$id) {
$url = 'https://fcm.googleapis.com/fcm/send';
$fields = array (
        'to' => $id,
        'notification' => array (
                "body" => $mess,
                "title" => "Title",
                "icon" => "myicon"
        )
);
$fields = json_encode ( $fields );
$headers = array (
        'Authorization: key=' . "AIzaSyA9vpL9OuX6moOYw-4n3YTSXpoSGQVGnyM",
        'Content-Type: application/json'
);

$ch = curl_init ();
curl_setopt ( $ch, CURLOPT_URL, $url );
curl_setopt ( $ch, CURLOPT_POST, true );
curl_setopt ( $ch, CURLOPT_HTTPHEADER, $headers );
curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, true );
curl_setopt ( $ch, CURLOPT_POSTFIELDS, $fields );

$result = curl_exec ( $ch );
curl_close ( $ch );
}

?>

将消息和令牌ID作为参数传递给sendFCM($mess,$id)调用.

Answer 2

我试过这个并且工作:

<?php
$ch = curl_init("https://fcm.googleapis.com/fcm/send");
$header=array('Content-Type: application/json',
"Authorization: key=GoGdfsflknEFñslknaglksjfnklj");
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
curl_setopt( $ch,CURLOPT_SSL_VERIFYPEER, false );

curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "{ \"notification\": {    \"title\": \"Test desde curl\",    \"text\": \"Otra prueba\"  },    \"to\" : \"SGferg-qWEFWbI:dflñkndfakllvakrgalkgjdgjslfkgjdglksdjflksjglkjlkñerhTHDFSHFZDHzdfakjsdhskjhgkjashfdasjdkf\"}");

curl_exec($ch);
curl_close($ch);
?>

这是结果:

{"multicast_id":4913280949692448120,"success":1,"failure":0,"canonical_ids":0,"results":[{"message_id":"0:1473389987003950%ab9a0bb6ab9a0bb6"}]}

Answer 3

从 php 要点来看，您正在发送一条仅数据消息。您的接收者正在等待通知消息，因此当您从远程消息获取通知时，它将为空，从而在您调用 getBody 时导致 NPE。

发送通知消息，它​​应该按预期工作。请参阅此处的通知消息要求： https ://firebase.google.com/docs/cloud-messaging/http-server-ref#notification-payload-support