Android:后台传递数据中的FCM推送通知

Question

我在将背景数据传递到屏幕时遇到困难。在后台，应用程序正在正确调用屏幕，但未获取通知中“数据”(来自数据对象的 ID)中此屏幕所需的数据。在前台我正确地得到了“数据”。

通知json

{
    "to" : "akshih890uhnkjh389jfkn3...",
    "priority" : "normal",
    "time_to_live" : 0,
    "data" : {
        "type" : "my_type",
        "id" : "my_id"
    },
    "notification" : {
        "body" : "Test body",
        "title" : "Test title",
        "click_action" : ".MyActivity"
    }
}


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

            String title = remoteMessage.getNotification().getTitle();
            String body = remoteMessage.getNotification().getBody();
            String clickAction = remoteMessage.getNotification().getClickAction();

                Map<String, String> data = remoteMessage.getData();
                Gson gson = new Gson();
                MyObject myObject = new MyObject(data.get("id"), data.get("type"), remoteMessage.getNotification().getTitle(),
                    remoteMessage.getNotification().getBody());

                Intent intent = new Intent(myObject.getClickAction());
                intent.putExtra("id", myObject.getId());

                PendingIntent contentIntent = PendingIntent.getActivity(
                        this, 0, intent,
                        PendingIntent.FLAG_UPDATE_CURRENT);

                sendFCMNotification(title, body, contentIntent);

        }

我的 Activity

 if(getIntent() != null) {

            Bundle extras = getIntent().getExtras();
            code = extras.getString("id");

        }

Answer 1

int id = Integer.valueOf(remoteMessage.getData().get("id"));

因为你使用了 remoteMessage.getData()，你得到了整个 data 对象，而不是一个里面有 data json 的对象，你得到包含您的字段的实际 data json。

String data = remoteMessage.getData();
Gson gson = new Gson();
MyObject myObject = gson.fromJson(data, MyObject.class);