使用 PHP 发送器和 Swift 在后台未收到 IOS GCM 推送通知 [英] IOS GCM push notifications not received in background using PHP sender and Swift

问题描述

我正在使用 GCM 获取后台通知以在 IOS 上工作 - 非后台通知已经在工作.以下是我集成后台通知的步骤:

I'm working on getting background notifications to work on IOS with GCM - non-background notifications are already working. Here are my steps to integrate background notifications:

1. 在 UIBackgroundmodes 中启用远程通知标签
2. 将 content-available 密钥添加到我的通知负载中.
3. 在我的委托中编写应用程序:didRecieveRemoteNotification:fetchCompletionHandler:.

这是委托函数的代码:

func application( application: UIApplication,
    didReceiveRemoteNotification userInfo: [NSObject : AnyObject],
    fetchCompletionHandler handler: (UIBackgroundFetchResult) -> Void) {
        println("Notification received2: \(userInfo)")

        GCMService.sharedInstance().appDidReceiveMessage(userInfo);

        NSNotificationCenter.defaultCenter().postNotificationName(messageKey, object: nil,
            userInfo: userInfo)
        handler(UIBackgroundFetchResult.NoData);    
}

这是服务器上 php 脚本的代码:

This is the code for the on-server php script:

<?php
$regId = $_GET["regId"];
$message = $_GET["message"];

$data = array( 'price' => $message, 'sound' => 'default', 'body' => 'helloworld', 'title' => 'default', 'badge' => 12, 'content-available' => 1);

$ids = array( $regId);

sendGoogleCloudMessage(  $data, $ids );

function sendGoogleCloudMessage( $data, $ids )
{

    $apiKey = THE-API-KEY-THAT-I-AM-USING;

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

    $post = array(
                'registration_ids'  => $ids,
                'data'              => $data,
                'content-available' => 1,
    );

    $headers = array(
                    'Authorization: key=' . $apiKey,
                    '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( $post ) );

    $result = curl_exec( $ch );

    if ( curl_errno( $ch ) )
    {
        echo 'GCM error: ' . curl_error( $ch );
    }

    curl_close( $ch );

    echo $result;
}
?>

我已尝试通过内部data"数组和外部post"数组发送 content-available 标志，我已通过将其添加到两者中来表示.

I have tried sending the content-available flag through both the inner "data" array and the outer "post" array, which I have indicated by adding it to both.

消息不是由 fetchCompletionHandler 函数接收的，而是等待应用程序再次激活并由普通应用程序接收:didRecieveRemoteNotification 函数.没有通过后台功能收到我的通知的原因可能是什么?

The message is not received by the fetchCompletionHandler function, but rather waits until the app is active again and is received by the normal application:didRecieveRemoteNotification function. What could be the reason that my notification is not received via the background functionality?

推荐答案

您应该向 GCM 提供 content_available，而不是 content-available(如在 APNs 中)，您将能够在后台接收推送通知.

You should provide content_available to GCM, not content-available (like in APNs) and you will be able to receive push notifications in background.

https://developers.google.com/cloud-messaging/server-ref#send-downstream

P.S.- 不到五分钟前，我遇到了完全相同的问题.我们应该更仔细地阅读文档...

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