java - 从 GCM 迁移到 FCM

Question

最近我已从 GCM 迁移到 FCM，过去几天我一直在努力让它发挥作用。

Android 应用程序正在从 google firebase 控制台接收通知，但不会从 php 服务器接收通知。

这是我的 PHP 服务器端代码:

<?php



define("GOOGLE_API_KEY", Setting::get('browser_key') ? Setting::get('browser_key') : "");


class GCM {

function __construct() {

}


public function send_notification($registatoin_ids, $message) {

    Log::info("GOOGLE_API_KEY".GOOGLE_API_KEY);

    include_once 'const.php';
    $url = 'https://fcm.googleapis.com/fcm/send';

    $fields = array(
        'registration_ids' => $registatoin_ids,
        'data' => $message,
    );

    $headers = array(
        'Authorization: key=' . GOOGLE_API_KEY,
        'Content-Type: application/json'
    );

    Log::info('***** PUSH MESSAGE ******'.print_r(json_encode($fields),true));

    $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($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));

    $result = curl_exec($ch);

    Log::info(print_r($result,true));

    if ($result === FALSE) {
        //die('Curl failed: ' . curl_error($ch));
        Log::error('Curl failed: ' . curl_error($ch));
    }
    else{
        //echo $result;
        Log::error($result);
    }

    // Close connection
    /*curl_close($ch);
     echo $result/*."\n\n".json_encode($fields); */

}

}
?>

这是我的 const.php

<?php

    define('TEAM','team');

    define('MESSAGE' , 'message');

?>

这是我的 firebase 消息传递代码:

public class MessagingService extends FirebaseMessagingService {

private static final String TAG = "FCM Message";

public MessagingService() {
    super();
}

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    super.onMessageReceived(remoteMessage);

    sendNotification(remoteMessage.getNotification().getBody());

    Log.d(TAG, "From: " + remoteMessage.getFrom());
    Log.d(TAG, "Notification Message Body: " + remoteMessage.getNotification());
}

private void sendNotification(String body) {


    Intent intent = new Intent(this, MainActivity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendingIntent= PendingIntent.getActivity(this, 0,intent,PendingIntent.FLAG_ONE_SHOT);

    Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);


    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this);
    notificationBuilder.setContentTitle("Codegama");
    notificationBuilder.setContentText(body);
    notificationBuilder.setAutoCancel(true);
    notificationBuilder.setSound(defaultSoundUri);
    notificationBuilder.setContentIntent(pendingIntent);

    NotificationManager notificationManager =  (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(0,notificationBuilder.build());




}
}

这是我在 logcat android studio 中不断遇到的错误:

 java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.google.firebase.messaging.RemoteMessage$Notification.getBody()' on a null object reference
    at hr.trazim.client.services.MessagingService.onMessageReceived(MessagingService.java:32)
    at com.google.firebase.messaging.FirebaseMessagingService.zzd(Unknown Source:60)
    at com.google.firebase.iid.zzg.run(Unknown Source:4)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
    at com.google.android.gms.common.util.concurrent.zza.run(Unknown Source:6)
    at java.lang.Thread.run(Thread.java:919)

2020-01-07 12:08:11.092 1732-29214/? E/ResolverController:没有有效的 NAT64 前缀(101，/0)

我在 stackoverflow 上读了很多这样的主题，但找不到合适的修复/解决方案。我希望这个修复能够帮助像我这样的其他开发者找到合适的答案，而不会像我一样浪费太多时间。

附注如果您需要我的 token ，我还没有迁移它，但它在这里工作的是代码:

public class InstanceIDService extends FirebaseInstanceIdService {

@Override
public void onTokenRefresh() {
    super.onTokenRefresh();
    String refreshedToken = FirebaseInstanceId.getInstance().getToken();
    Log.e("FCMToken", refreshedToken);
    saveDeviceToken(refreshedToken);
}

private void saveDeviceToken(String token) {
    UserDataSource.getDataInstance().putDeviceToken(token);
}

}

提前致谢。

Answer 1

尝试使用这个:

@TargetApi(Build.VERSION_CODES.O)
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)

public void show_Notification(){

Intent intent=new Intent(getApplicationContext(),MainActivity.class);
String CHANNEL_ID="MYCHANNEL";
NotificationChannel notificationChannel=new NotificationChannel(CHANNEL_ID,"name",NotificationManager.IMPORTANCE_LOW);
PendingIntent pendingIntent=PendingIntent.getActivity(getApplicationContext(),1,intent,0);
Notification notification=new Notification.Builder(getApplicationContext(),CHANNEL_ID)
        .setContentText("Heading")
        .setContentTitle("subheading")
        .setContentIntent(pendingIntent)
        .addAction(android.R.drawable.sym_action_chat,"Title",pendingIntent)
        .setChannelId(CHANNEL_ID)
        .setSmallIcon(android.R.drawable.sym_action_chat)
        .build();

NotificationManager notificationManager=(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.createNotificationChannel(notificationChannel);
notificationManager.notify(1,notification);


 }