如何在按钮单击时发送推送通知

Question

我已经为我的 android 应用程序创建了推送通知，当我尝试从 firebase 控制台发送它时它就可以工作了。现在我想要的是当用户点击注册时发出推送通知，然后向其他用户显示通知。

我在 google 中搜索过，但没有找到示例之一。目标是通知其他用户我的应用中有新用户注册。

感谢您的帮助

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    private static final String TAG = "MyFirebaseMessagingService";
    public static final int ID_SMALL_NOTIFICATION = 235;
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        // ...

        // TODO(developer): Handle FCM messages here.

        Log.d(TAG, "From: " + remoteMessage.getFrom());

        // Check if message contains a data payload.
        if (remoteMessage.getData().size() > 0) {
            Log.d(TAG, "Message data payload: " + remoteMessage.getData());
            sendNotification("Hi ini isinya");
        }

        // Check if message contains a notification payload.
        if (remoteMessage.getNotification() != null) {
            Log.d(TAG,"Message Notification Title" + remoteMessage.getNotification().getTitle());
            Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
        }

        // Also if you intend on generating your own notifications as a result of a received FCM
        // message, here is where that should be initiated. See sendNotification method below.
    }

    private void sendNotification(String messageBody) {
        Intent intent = new Intent(this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, ID_SMALL_NOTIFICATION, intent,
                PendingIntent.FLAG_ONE_SHOT);

        String channelId = "fcm_default_channel";
        Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder =
                new NotificationCompat.Builder(this, channelId)
                        .setSmallIcon(R.drawable.icon)
                        .setContentTitle("FCM Message")
                        .setContentText(messageBody)
                        .setAutoCancel(true)
                        .setSound(defaultSoundUri)
                        .setContentIntent(pendingIntent);

        NotificationManager notificationManager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        notificationManager.notify(ID_SMALL_NOTIFICATION, notificationBuilder.build());
    }

}

Answer 1

我没明白你的意思，但你可以使用 Volly Json 对象请求

首先您需要从 Firebase 控制台复制您的 服务器密钥，打开 Firebase Console 并选择您的项目

第二次在你的项目中添加 Volley 依赖

编译'com.mcxiaoke.volley:library:1.0.19'

那么你可以添加这个代码来推送

private void sendFCMPush() {

            String SERVER_KEY = YOUR_SERVER_KEY;
            String msg = "this is test message";
            String title = "my title";
            String token = FCM_TOKEN;

            JSONObject obj = null;
        JSONObject objData = null;
        JSONObject dataobjData = null;

        try {
            obj = new JSONObject();
            objData = new JSONObject();

            objData.put("body", msg);
            objData.put("title", title);
            objData.put("sound", "default");
            objData.put("icon", "icon_name"); //   icon_name
            objData.put("tag", token);
            objData.put("priority", "high");

            dataobjData = new JSONObject();
            dataobjData.put("text", msg);
            dataobjData.put("title", title);

            obj.put("to", token);
            //obj.put("priority", "high");

            obj.put("notification", objData);
            obj.put("data", dataobjData);
            Log.e("return here>>", obj.toString());
        } catch (JSONException e) {
            e.printStackTrace();
        }

            JsonObjectRequest jsObjRequest = new JsonObjectRequest(Request.Method.POST, Constants.FCM_PUSH_URL, obj,
                    new Response.Listener<JSONObject>() {
                        @Override
                        public void onResponse(JSONObject response) {
                            Log.e("True", response + "");
                        }
                    },
                    new Response.ErrorListener() {
                        @Override
                        public void onErrorResponse(VolleyError error) {
                            Log.e("False", error + "");
                        }
                    }) {
                @Override
                public Map<String, String> getHeaders() throws AuthFailureError {
                    Map<String, String> params = new HashMap<String, String>();
                    params.put("Authorization", "key=" + SERVER_KEY);
                    params.put("Content-Type", "application/json");
                    return params;
                }
            };
            RequestQueue requestQueue = Volley.newRequestQueue(this);
            int socketTimeout = 1000 * 60;// 60 seconds
            RetryPolicy policy = new DefaultRetryPolicy(socketTimeout, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);
            jsObjRequest.setRetryPolicy(policy);
            requestQueue.add(jsObjRequest);
}

希望有帮助

Answer 2

当一个用户点击注册时，您想向所有已经注册的其他人发送推送，对吧？ 您需要向该地址发出 HTTP POST 请求：

https://fcm.googleapis.com/fcm/send

带有一个名为“Authorization”的标头，其值类似于“key=AIza...”。

因此，在请求正文中，您可以像这样发送 JSON。

{
  "to": "/topics/foo-bar",
  "data": {
    "message": "This is a Firebase Cloud Messaging Topic Message!",
   }
}

然后您需要创建一个主题并将设备订阅到相同的主题。

FirebaseMessaging.getInstance().subscribeToTopic("foo-bar");

应该没问题。