使用 GCM 向多个 Android 设备发送推送通知

本文介绍了使用 GCM 向多个 Android 设备发送推送通知的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在关注 http://javapapers.com/android/google-cloud-messaging-gcm-for-android-and-push-notifications/?通过 GCM 发送推送通知.一切正常，但是，我只能向一台设备发送推送通知.注册另一个设备会替换之前设备的注册 ID.我在 http://javapapers 中尝试了 Shardool 提供的解决方案.com/android/android-multicast-notification-using-google-cloud-messaging-gcm/?但它不工作.

任何建议都会有很大帮助.

这是我的 gcm.php 代码，用于注册设备并发送推送通知，但仅限于最近注册的单个设备.

gcm.php

$registatoin_ids,'数据' =>$消息，);//Google Cloud Messaging GCM API 密钥定义(GOOGLE_API_KEY"，MY_KEY")；$headers = 数组('授权:密钥='.GOOGLE_API_KEY，'内容类型:应用程序/json');$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_POST, true);curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));$result = curl_exec($ch);如果($result === FALSE){死('卷曲失败:'.卷曲错误($ ch))；}curl_close($ch);返回 $result;}?><?php//这个块是在点击时将消息发布到GCM$pushStatus = "";如果(！空($_GET[推"])){$gcmRegID = file_get_contents("GCMRegId.txt");$pushMessage = $_POST["message"];if (isset($gcmRegID) && isset($pushMessage)) {$gcmRegIds = 数组($gcmRegID)；$message = array("m" => $pushMessage);$pushStatus = sendPushNotificationToGCM($gcmRegIds, $message);}}//这个块是从外部(移动应用程序)接收GCM regId如果(！空($_GET[shareRegId"])){$gcmRegID = $_POST["regId"];file_put_contents("GCMRegId.txt",$gcmRegID);echo "好的！";出口;}?><头><title>PHP 中的 Google Cloud Messaging (GCM) 服务器</title><身体><h1>PHP 中的 Google Cloud Messaging (GCM) 服务器</h1><form method="post" action="gcm.php/?push=1"><div><textarea rows="2" name="message" cols="23" placeholder="通过 GCM 传输的消息"></textarea><div><input type="submit" value="Send Push Notification via GCM"/></div></表单><p><h3><?php echo $pushStatus;?></h3></p>

请告诉我如何在 GCMRegid.txt 中存储多个设备注册 ID 并向每个注册设备发送通知

解决方案

这里我使用 mysql 重写了 php，而不是从文件中检索密钥.在这种情况下，我从表中检索所有 regIds 并将它们放入一个数组中，然后将其传递给 sendPushNotification 函数以将消息推送给所有人.这里有 2 个文件，一个用于连接数据库，一个用于 GCM:

connect.php:

gcm.php

$registration_ids,'数据' =>$消息，);定义('GOOGLE_API_KEY'，'AIzaSyCjctNK2valabAWL7rWUTcoRA-UAXI_3ro')；$headers = 数组('授权:密钥='.GOOGLE_API_KEY，'内容类型:应用程序/json');回声 json_encode($fields);$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_POST, true);curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));$result = curl_exec($ch);if($result === false)die('卷曲失败'.curl_error());curl_close($ch);返回 $result;}$pushStatus = '';if(!empty($_GET['push'])) {$query = "从用户中选择 regId";if($query_run = mysql_query($query)) {$gcmRegIds = array();while($query_row = mysql_fetch_assoc($query_run)) {array_push($gcmRegIds, $query_row['regId']);}}$pushMessage = $_POST['message'];if(isset($gcmRegIds) && isset($pushMessage)) {$message = array('message' => $pushMessage);$pushStatus = sendPushNotification($gcmRegIds, $message);}}if(!empty($_GET['shareRegId'])) {$gcmRegId = $_POST['regId'];$query = "插入用户值 ('', '$gcmRegId')";if($query_run = mysql_query($query)) {回声'好';出口;}}?><头><title>PHP 中的 Google Cloud Messaging (GCM) 服务器</title><身体><h1>PHP 中的 Google Cloud Messaging (GCM) 服务器</h1><form method = 'POST' action = 'gcm.php/?push=1'><div><textarea rows = 2 name = "message" cols = 23 placeholder = 'Messages to Transmit via GCM'></textarea>

<div><input type = 'submit' value = '通过 GCM 发送推送通知'>

<p><h3><?php echo $pushStatus ?></h3></p></表单>

您所要做的就是创建一个数据库，其中包含一个以 id、regId 和 name 作为列的用户表.

希望这就是你要找的

I am following http://javapapers.com/android/google-cloud-messaging-gcm-for-android-and-push-notifications/? to send push notifications via GCM. Everything works fine but, i am able to send push notification to just one device. Registering another device replaces registration id of previous device. I tried solution provided by Shardool in http://javapapers.com/android/android-multicast-notification-using-google-cloud-messaging-gcm/? but its not working.

Any suggestion would be of great help.

Here are my gcm.php codes that registers device and sends push notifications but, only to a single device registered recently.

gcm.php

<?php
//generic php function to send GCM push notification
function sendPushNotificationToGCM($registatoin_ids, $message) {
    //Google cloud messaging GCM-API url
    $url = 'https://android.googleapis.com/gcm/send';
    $fields = array(
        'registration_ids' => $registatoin_ids,
        'data' => $message,
    );
    // Google Cloud Messaging GCM API Key
    define("GOOGLE_API_KEY", "MY_KEY");       
    $headers = array(
        'Authorization: key=' . GOOGLE_API_KEY,
        'Content-Type: application/json'
    );
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));
    $result = curl_exec($ch);             
    if ($result === FALSE) {
        die('Curl failed: ' . curl_error($ch));
    }
    curl_close($ch);
    return $result;
}
?>
<?php
//this block is to post message to GCM on-click
$pushStatus = "";   
if ( ! empty($_GET["push"])) { 
    $gcmRegID  = file_get_contents("GCMRegId.txt");
    $pushMessage = $_POST["message"];   
    if (isset($gcmRegID) && isset($pushMessage)) {      
        $gcmRegIds = array($gcmRegID);
        $message = array("m" => $pushMessage);  
        $pushStatus = sendPushNotificationToGCM($gcmRegIds, $message);
    }       
}
//this block is to receive the GCM regId from external (mobile apps)
if ( ! empty($_GET["shareRegId"])) {
    $gcmRegID  = $_POST["regId"]; 
    file_put_contents("GCMRegId.txt",$gcmRegID);
    echo "Ok!";
    exit;
}   
?>
<html>
    <head>
        <title>Google Cloud Messaging (GCM) Server in PHP</title>
    </head>
    <body>
        <h1>Google Cloud Messaging (GCM) Server in PHP</h1> 
        <form method="post"   action="gcm.php/?push=1">                                              
            <div>                                
                <textarea rows="2" name="message" cols="23" placeholder="Message to transmit via   GCM"></textarea>
            </div>
            <div><input type="submit"  value="Send Push Notification via GCM" /></div>
        </form>
        <p><h3><?php echo $pushStatus; ?></h3></p>        
    </body>
</html>

Please tell me how do I store multiple device registration ids in GCMRegid.txt and send notifications to each of the registered device

解决方案

Here I rewrote the php using mysql rather than retrieving the keys from file. In this case, I retrieve all the regIds from the table and put them in an array and pass it to sendPushNotification function to push the message to all. here you have 2 files, one for connect to database and one for GCM:

connect.php:

<?php

    $db_host = "localhost";
    $db_user = "root"; //change to your database username, it is root by default
    $db_pass = '';     //change to your database password, for XAMPP it is nothing for WAMPP it is root
    $db_db = 'gcmFirst'; //change to your database name

    if(!@mysql_connect($db_host, $db_user, $db_pass) || !@mysql_select_db($db_db)) {
        die('couldnt connect to database ' .mysql_error());
    }

?>

gcm.php

<?php
require 'connect.php';

function sendPushNotification($registration_ids, $message) {

    $url = 'https://android.googleapis.com/gcm/send';
    $fields = array(
        'registration_ids' => $registration_ids,
        'data' => $message,
    );

    define('GOOGLE_API_KEY', 'AIzaSyCjctNK2valabAWL7rWUTcoRA-UAXI_3ro');

    $headers = array(
        'Authorization:key=' . GOOGLE_API_KEY,
        'Content-Type: application/json'
    );
    echo json_encode($fields);
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));

    $result = curl_exec($ch);
    if($result === false)
        die('Curl failed ' . curl_error());

    curl_close($ch);
    return $result;

}

$pushStatus = '';

if(!empty($_GET['push'])) {

    $query = "SELECT regId FROM users";
    if($query_run = mysql_query($query)) {

        $gcmRegIds = array();
        while($query_row = mysql_fetch_assoc($query_run)) {

            array_push($gcmRegIds, $query_row['regId']);

        }

    }
    $pushMessage = $_POST['message'];
    if(isset($gcmRegIds) && isset($pushMessage)) {

        $message = array('message' => $pushMessage);
        $pushStatus = sendPushNotification($gcmRegIds, $message);

    }   
}

if(!empty($_GET['shareRegId'])) {

    $gcmRegId = $_POST['regId'];
    $query = "INSERT INTO users VALUES ('', '$gcmRegId')";
    if($query_run = mysql_query($query)) {
        echo 'OK';
        exit;
    }   
}
?>

<html>
    <head>
        <title>Google Cloud Messaging (GCM) Server in PHP</title>
    </head>
    <body>
    <h1>Google Cloud Messaging (GCM) Server in PHP</h1>
    <form method = 'POST' action = 'gcm.php/?push=1'>
        <div>
            <textarea rows = 2 name = "message" cols = 23 placeholder = 'Messages to Transmit via GCM'></textarea>
        </div>
        <div>
            <input type = 'submit' value = 'Send Push Notification via GCM'>
        </div>
        <p><h3><?php echo $pushStatus ?></h3></p>
    </form>
    </body>
</html>

all you have to do is create a database that has a users table with id, regId and name as columns.

Hope this is what you are looking for

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使用 GCM 向多个 Android 设备发送推送通知

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