android - private void sendRegistrationToServer(String token) 参数 token 从不使用

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Answer 1

如评论部分所述，问题含糊不清，但我有点明白你的问题。

sendRegistrationToServer() 是一个可选方法，可以在 Firebase 的大多数示例中看到。来自 GitHub example :

package com.google.firebase.quickstart.fcm;

import android.util.Log;

import com.google.firebase.iid.FirebaseInstanceId;
import com.google.firebase.iid.FirebaseInstanceIdService;


public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {

    private static final String TAG = "MyFirebaseIIDService";

    /**
     * Called if InstanceID token is updated. This may occur if the security of
     * the previous token had been compromised. Note that this is called when the InstanceID token
     * is initially generated so this is where you would retrieve the token.
     */
    // [START refresh_token]
    @Override
    public void onTokenRefresh() {
        // Get updated InstanceID token.
        String refreshedToken = FirebaseInstanceId.getInstance().getToken();
        Log.d(TAG, "Refreshed token: " + refreshedToken);

        // If you want to send messages to this application instance or
        // manage this apps subscriptions on the server side, send the
        // Instance ID token to your app server.
        sendRegistrationToServer(refreshedToken);
    }
    // [END refresh_token]

    /**
     * Persist token to third-party servers.
     *
     * Modify this method to associate the user's FCM InstanceID token with any server-side account
     * maintained by your application.
     *
     * @param token The new token.
     */
    private void sendRegistrationToServer(String token) {
        // TODO: Implement this method to send token to your app server.
    }
}

从这里，您可以看到在 onTokenRefresh() 中调用了 sendRegistrationToServer()，其中生成了用于 FCM 的注册 token 。代码文档已经说明了 sendRegistrationToServer() 中应该发生的事情:

Persist token to third-party servers. Modify this method to associate the user's FCM InstanceID token with any server-side account maintained by your application.

向您自己的应用服务器发送注册 token 是可选的，但强烈建议这样做(参见 FCM docs )。这样您就可以拥有 token 以备将来使用。