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：
3 回答
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，则在设备唤醒设备之前不会传送GCM消息，只要设备选择重新连接到WiFi即可 .
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 . 它会工作 .
对于棉花糖，请看这个：
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 .