GCM 返回空消息类型

我创建了一个使用 GoogleCloudMessaging 的应用程序。应用程序可以注册到 gcm 并将其注册 ID 存储到我服务器上的数据库中。我正在使用 php 来发送推送通知，但是当 google 将其发送到我的设备时，意图服务发现其消息类型为空。我在不同的应用程序中尝试了相同的代码，效果很好。但这次没有。该应用程序可以从谷歌获取消息并通过显示带有空文本的通知来处理它。我在下面提供了意图服务和 php 代码。感谢您的回答。

发送消息.php

<?php
if (isset($_GET["regId"]) && isset($_GET["message"])) {
$regId = $_GET["regId"];
$message = $_GET["message"];

include_once './GCM.php';

$gcm = new GCM();

$registatoin_ids = array($regId);
$message = array("price" => $message);

$result = $gcm->send_notification($registatoin_ids, $message);

echo $result;
}
?>

GCM.php

<?php

class GCM {

//put your code here
// constructor
function __construct() {

}

/**
 * Sending Push Notification
 */
public function send_notification($registatoin_ids, $message) {
    // include config
    include_once './config.php';

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

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

    $headers = array(
        'Authorization: key=' . GOOGLE_API_KEY,
        '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);
    echo $result;
    }

}

?>

MyIntentService.java

public class MyIntentService extends IntentService {

public static final int NOTIFICATION_ID = 1;
private NotificationManager mNotificationManager;
NotificationCompat.Builder builder;

public MyIntentService() {
    super("MyIntentService");
}

@Override
protected void onHandleIntent(Intent intent) {
    Log.v(MainActivity.TAG, "Handling intent.");
    Bundle extras = intent.getExtras();
    GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
    // The getMessageType() intent parameter must be the intent you received
    // in your BroadcastReceiver.
    String messageType = gcm.getMessageType(intent);
    generateNotification(getApplicationContext(), extras.getString("price"));
    Log.v(MainActivity.TAG, "IntentService messagetype= " + messageType);
    if (!extras.isEmpty()) {  // has effect of unparcelling Bundle
        /*
         * Filter messages based on message type. Since it is likely that GCM will be
         * extended in the future with new message types, just ignore any message types   
         * not interested in, or that you don't recognize.
         */
        if (GoogleCloudMessaging.MESSAGE_TYPE_SEND_ERROR.equals(messageType)) {
            sendNotification("Send error: " + extras.toString());
        } else if (GoogleCloudMessaging.MESSAGE_TYPE_DELETED.equals(messageType)) {
            sendNotification("Deleted messages on server: " + extras.toString());
        // If it's a regular GCM message, do some work.
        } else if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE.equals(messageType)) {
            // This loop represents the service doing some work.
//                for (int i = 0; i < 5; i++) {
//                    Log.i(TAG, "Working... " + (i + 1)
//                            + "/5 @ " + SystemClock.elapsedRealtime());
//                    try {
//                        Thread.sleep(5000);
//                    } catch (InterruptedException e) {
//                    }
//                }
            Log.i(MainActivity.TAG, "Completed work @ " +SystemClock.elapsedRealtime());
            // Post notification of received message.
            sendNotification("Received: " + extras.toString());
            generateNotification(getApplicationContext(),
"Received:" + extras.getString("price"));
            Log.i(MainActivity.TAG, "Received: " + extras.toString());
        }
    }
    // Release the wake lock provided by the WakefulBroadcastReceiver.
    WakefulBroadcastReceiver.completeWakefulIntent(intent);
}

简而言之，“Log.v(MainActivity.TAG,“IntentService messagetype=”+ messageType);”显示“IntentService messagetype = null”。我怎么解决这个问题？

public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
    // Explicitly specify that GcmIntentService will handle the intent.
    ComponentName comp = new ComponentName(context.getPackageName(),
            GcmIntentService.class.getName());
    // Start the service, keeping the device awake while it is launching.
    startWakefulService(context, (intent.setComponent(comp)));
    setResultCode(Activity.RESULT_OK);
}
}

检查 AndroidManifest.xml ！ 并修复 GCM 的设置，如下所示。 就我而言，我解决了这个“空”问题。 祝你好运！

<permission
    android:name="[MY PACKAGE NAME].permission.C2D_MESSAGE"
    android:protectionLevel="signature" />
...

<uses-permission android:name="[MY PACKAGE NAME].permission.C2D_MESSAGE" />
...
<service android:name="[MY PACKAGE NAME].GCMIntentService" /> 
...
<receiver
    android:name="[MY PACKAGE NAME].GcmBroadcastReceiver"  android:exported="true"
    android:permission="com.google.android.c2dm.permission.SEND" >
    <intent-filter>
        <action android:name="com.google.android.c2dm.intent.RECEIVE" />
        <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
        <category android:name="[MY PACKAGE NAME]" />
    </intent-filter>
</receiver>