Question

我正在尝试使用GCM。我想从服务器（PHP文件）向我的设备（Android手机）发送消息

想法是启动应用程序，在任何导航器（chrome，firefox ...）上加载test.php，然后我的手机上会出现通知。实际上，我的手机上什么也没发生。在Android Studio的日志中，我可以看到GCM注册令牌，所以可以这样做。但之后......我有点失落。如何检查邮件是否已发送到服务器？我怎么知道该服务正在监听应用程序？

这是我的实际文件，当我发送邮件和启动应用程序时没有错误：

test.php的

<?php

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

require_once __DIR__ . '/gcm.php';

$gcm = new GCM();

$data = array();
$data['message'] = "Un message de test";

// the topic you want to send notification
$topic = 'global';

// sending push message to a topic
$gcm->sendToTopic($topic, $data);

?>

gcm.php（我已从此处删除了API密钥）

<?php
class GCM {

    // constructor
    function __construct() {

    }

    // sending push message to single user by gcm registration id
    public function send($to, $message) {
        $fields = array(
            'to' => $to,
            'data' => $message,
        );
        return $this->sendPushNotification($fields);
    }

    // Sending message to a topic by topic id
    public function sendToTopic($to, $message) {
        $fields = array(
            'to' => '/topics/' . $to,
            'data' => $message,
        );
        return $this->sendPushNotification($fields);
    }

    // sending push message to multiple users by gcm registration ids
    public function sendMultiple($registration_ids, $message) {
        $fields = array(
            'registration_ids' => $registration_ids,
            'data' => $message,
        );

        return $this->sendPushNotification($fields);
    }

    // function makes curl request to gcm servers
    private function sendPushNotification($fields) {

        // include config

        // Set POST variables
        $url = 'https://gcm-http.googleapis.com/gcm/send';

        $headers = array(
            'Authorization: key=AIz...',
            'Content-Type: application/json'
        );
        // Open connection
        $ch = curl_init();

    // Set the url, number of POST vars, POST data
    curl_setopt($ch, CURLOPT_URL, $url);

    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    // Disabling SSL Certificate support temporarly
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

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

    // Execute post
    $result = curl_exec($ch);
    if ($result === FALSE) {
        die('Curl failed: ' . curl_error($ch));
    }

    // Close connection
    curl_close($ch);

    return $result;
}}?>

对于应用程序：

MainActivity.java

protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Registering BroadcastReceiver
        //registerReceiver();

        if (checkPlayServices()) {
            // Start IntentService to register this application with GCM.
            Intent intent = new Intent(this, RegistrationIntentService.class);
            startService(intent);

        }
...
private boolean checkPlayServices() {
        GoogleApiAvailability apiAvailability = GoogleApiAvailability.getInstance();
        int resultCode = apiAvailability.isGooglePlayServicesAvailable(this);
        if (resultCode != ConnectionResult.SUCCESS) {
            if (apiAvailability.isUserResolvableError(resultCode)) {
                apiAvailability.getErrorDialog(this, resultCode, PLAY_SERVICES_RESOLUTION_REQUEST)
                        .show();
            } else {
                Log.i(TAG, "This device is not supported.");
                finish();
            }
            return false;
        }
        return true;
    }

RegistrationIntentService.java

public class RegistrationIntentService extends IntentService {

    private static final String TAG = "RegIntentService";
    private static final String[] TOPICS = {"global"};

    public RegistrationIntentService() {
        super(TAG);
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);

        try {
            InstanceID instanceID = InstanceID.getInstance(this);
            String token = instanceID.getToken(getString(R.string.gcm_defaultSenderId),
                    GoogleCloudMessaging.INSTANCE_ID_SCOPE, null);
            Log.i(TAG, "GCM Registration Token: " + token);


            sendRegistrationToServer(token);

            subscribeTopics(token);
      sharedPreferences.edit().putBoolean(QuickstartPreferences.SENT_TOKEN_TO_SERVER, true).apply();

        } catch (Exception e) {
            Log.d(TAG, "Failed to complete token refresh", e);

            sharedPreferences.edit().putBoolean(QuickstartPreferences.SENT_TOKEN_TO_SERVER, false).apply();
        }
    }

    /**
     * Persist registration to third-party servers.
     *
     * Modify this method to associate the user's GCM registration token with any server-side account
     * maintained by your application.
     *
     * @param token The new token.
     */
    private void sendRegistrationToServer(String token) {
        // Add custom implementation, as needed.
    }

    /**
     * Subscribe to any GCM topics of interest, as defined by the TOPICS constant.
     *
     * @param token GCM token
     * @throws IOException if unable to reach the GCM PubSub service
     */
    // [START subscribe_topics]
    private void subscribeTopics(String token) throws IOException {
        GcmPubSub pubSub = GcmPubSub.getInstance(this);
        for (String topic : TOPICS) {
            pubSub.subscribe(token, "/topics/" + topic, null);
        }
    }
    // [END subscribe_topics]

}

MyGcmListenerService.java

import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.NotificationCompat;
import android.util.Log;

import com.google.android.gms.gcm.GcmListenerService;

public class MyGcmListenerService extends GcmListenerService {

    private static final String TAG = "MyGcmListenerService";

    /**
     * Called when message is received.
     *
     * @param from SenderID of the sender.
     * @param data Data bundle containing message data as key/value pairs.
     *             For Set of keys use data.keySet().
     */
    // [START receive_message]
    @Override
    public void onMessageReceived(String from, Bundle data) {
        String message = data.getString("message");
        Log.d(TAG, "From: " + from);
        Log.d(TAG, "Message: " + message);

        if (from.startsWith("/topics/")) {
            // message received from some topic.
        } else {
            // normal downstream message.
        }

        // [START_EXCLUDE]
        /**
         * Production applications would usually process the message here.
         * Eg: - Syncing with server.
         *     - Store message in local database.
         *     - Update UI.
         */

        /**
         * In some cases it may be useful to show a notification indicating to the user
         * that a message was received.
         */
        sendNotification(message);
        // [END_EXCLUDE]
    }
    // [END receive_message]

    /**
     * Create and show a simple notification containing the received GCM message.
     *
     * @param message GCM message received.
     */
    private void sendNotification(String message) {
        Intent intent = new Intent(this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
                PendingIntent.FLAG_ONE_SHOT);

        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.notification_icon)
                .setContentTitle("GCM Message")
                .setContentText(message)
                .setAutoCancel(true)
                .setSound(defaultSoundUri)
                .setContentIntent(pendingIntent);

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

        notificationManager.notify(1 /* ID of notification */, notificationBuilder.build());
    }
}

build.gradle（生成google-services.json并位于“app”文件夹中）

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.android.support:design:23.1.1'
    compile 'com.google.android.gms:play-services-appindexing:8.4.0'
    compile 'com.google.android.gms:play-services:8.4.0'
}

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        // Google Play Services
        classpath 'com.google.gms:google-services:1.3.0-beta1'
    }
}
apply plugin: 'com.google.gms.google-services'

最后是清单

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <!-- [START gcm_permission] -->
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
 <service
            android:name=".MyGcmListenerService"
            android:exported="false">
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE"/>
            </intent-filter>
        </service>
        <service
            android:name=".MyInstanceIDListenerService"
            android:exported="false">
            <intent-filter>
                <action android:name="com.google.android.gms.iid.InstanceID"/>
            </intent-filter>
        </service>
        <service
            android:name=".RegistrationIntentService"
            android:exported="false">
        </service>

Answer 1

现在可以使用GCM statistics查看通过GCM发送的消息的状态，以用于已发布的Google Play应用。要在您的Google Play开发者控制台上查看GCM统计信息，请按以下步骤将GCM简单API密钥或C2DM令牌与您的应用程序相关联：

登录您的Google Play开发者控制台。

选择一个应用。

在左侧菜单中，点击服务＆amp;的API 即可。

点击关联发件人ID 按钮。

输入您的GCM API密钥或C2DM客户端登录令牌。

点击链接。

发布应用后，您可以在应用的统计信息页面上查看GCM统计信息。

登录您的Google Play开发者控制台。

选择一个应用。

在左侧菜单中，点击统计。

点击“统计信息”旁边的下拉菜单，然后选择 GCM统计信息。

对于您的编码问题，此SO帖子 - GCM couldnt receive message可以提供帮助。

使用GCM，没有错误但没有收到消息

1 个答案: