Question

我的设备空闲时未收到GCM通知。当设备被唤醒时，它们都会立即通过。以下是将消息发送到GCM的代码：

Sender sender = new Sender(API_KEY);
Message message = new Message.Builder().addData("type","newRequest").delayWhileIdle(false).build();
MulticastResult results = sender.send(message, devices, 5);

这是我的GCMIntentService类：

公共类GCMIntentService扩展GCMBaseIntentService {

public static final String SENDER_ID = "XXXXXXXXXXXXX";

public GCMIntentService(){
    super(SENDER_ID);
}

@Override
protected void onError(Context context, String errorId) {
    // TODO Auto-generated method stub
}

@Override
protected void onMessage(Context context, Intent intent) {
    // TODO Auto-generated method stub
    WakeLocker.acquire(context);
    NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    long when = System.currentTimeMillis();
    int icon = R.drawable.ic_dialog_info;

    Intent notificationIntent = new Intent(this, MainActivity.class);
    PendingIntent contentIntent = PendingIntent.getActivity(this,0, notificationIntent, 0);
    Notification noti = new NotificationCompat.Builder(this)
            .setWhen(when).setContentTitle("New Storage Request")
            .setContentText("Touch to open app")
            .setSmallIcon(icon)
            .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
            .setTicker("New Storage Request").setAutoCancel(true)
            .setContentIntent(contentIntent)
            .getNotification();

    mNotificationManager.notify(0, noti);
}

@Override
protected void onRegistered(Context context, String regId) {
    // TODO Auto-generated method stub

    RestClient client = new RestClient(StorageApp.STORAGE_HOST+"StorageWebService/rest/operations/registerForGCM");
    client.AddParam("regId", regId);

    try {
        client.Execute(RequestMethod.GET);
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    System.out.println("done with call");
}

@Override
protected void onUnregistered(Context context, String regId) {
    // TODO Auto-generated method stub
    RestClient client = new RestClient(StorageApp.STORAGE_HOST+"StorageWebService/rest/operations/unregisterForGCM");
    client.AddParam("regId", regId);

    try {
        client.Execute(RequestMethod.GET);
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

}

WakeLocker是这个答案中描述的代码：

android AlarmManager not waking phone up

Answer 1

如果设备具有移动数据连接，GCM只能向处于睡眠模式的设备发送消息，例如电话。对于仅限WiFi的设备，如果设备处于睡眠状态，则只有在设备唤醒设备时才会传送GCM消息，此时设备选择重新连接到WiFi。

Answer 2

在服务器端代码中，请检查您在delayWhileIdle（）方法中传递的值。把它弄错。它会起作用。

Answer 3

对于棉花糖，请看一下：

https://developer.android.com/training/monitoring-device-state/doze-standby.html#using_gcm

GCM经过优化，可通过高优先级GCM消息与Doze和App Standby空闲模式配合使用。

Android GCM：设备空闲时不发送通知。

3 个答案: