我正在开发一个使用推送通知功能的Android应用程序.我需要从服务器推送.我使用Firebase.坦率地说,这是我第一次使用Firebase.我是Firebase的新手.但是当我使用PHP和CURL从服务器推送时,它给了我无效的注册错误.

我在Android中获得了这样的Firebase令牌

String token = FirebaseInstanceId.getInstance().getToken();

然后我将该令牌保存到服务器并保存在数据库中.

在服务器上,我这样推

class Pusher extends REST_Controller {

    function __construct()
    {
        parent::__construct();
    }

    public function notification_get()
    {
        $rows = $this->db->get('device_registration')->result();
        $tokens= array();
        if(count($rows)>0)
        {
            foreach($rows as $row)
            {
                $tokens[] = $row->token;
            }
        }
        $message = array("message"=>"FCM PUSH NOTIFICATION TESTING");
        if(count($tokens)>0)
        {
            $result = $this->send_notification($tokens,$message);
            if(!$result)
            {
                die("Unable to send");
            }
            else{
                $this->response($result,REST_Controller::HTTP_OK);
            }
        }

    }

    function send_notification($tokens,$message)
    {
        $url = 'https://fcm.googleapis.com/fcm/send';
        $fields = array(
                'registration_ids'=>$tokens,'data'=>$message
            );

        $headers = array(
                'Authorization:key = AIzaSyApyfgXsNQ3dFTGWR6ns_9pttr694VDe5M',//Server key from firebase
                '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($ch,CURLOPT_RETURNTRANSFER,CURLOPT_SSL_VERIFYHOST,0);
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
        curl_setopt($ch,CURLOPT_POSTFIELDS,json_encode($fields));
        $result = curl_exec($ch);
        if($result==FALSE)
        {
            return FALSE;
        }
        curl_close($ch);
        return $result;
    }
}

我正在使用CodeIgniter 3框架来构建Rest API.当我从浏览器推送访问URL时,它返回带有错误的JSON数据,如下面的屏幕截图所示.

正如您所看到的,它提供了InvalidRegistration错误,并且消息未被推送到设备.我的代码出了什么问题？

额外

这是我的FirebaseMessagingService类,它在android中显示通知

public class FirebaseMessagingService extends com.google.firebase.messaging.FirebaseMessagingService {

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);
        showNotification(remoteMessage.getData().get("message"));
    }

    private void showNotification(String message)
    {
        Intent i = new Intent(this,MainActivity.class);
        i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

        PendingIntent pendingIntent = PendingIntent.getActivity(this,i,PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(this).setAutoCancel(true)
                .setContentTitle("FCM Test")
                .setContentText(message)
                .setSmallIcon(R.drawable.info)
                .setContentIntent(pendingIntent);

        NotificationManager manager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
        manager.notify(0,builder.build());
    }
}