Android的 - 定期轮询服务器，并作为通知显示响应 [英] android - Periodically polling a server and displaying response as a notification

问题描述

我建立一个Android应用程序，我需要从一个服务器每隔三小时取一些通知数据（文本），并显示为使用NotificationManager通知。我看了<一个href=\"http://simpleandroidtutorials.blogspot.in/2012/06/periodically-update-data-from-server-in.html\"相对=nofollow>这里和这里但他们似乎pretty混乱给我。

I'm building an android app where I need to fetch some notification data (text) from a server every three hours and display it as a notification using NotificationManager. I've looked here and here but they seem pretty confusing to me.

我怎样才能得到这个工作？

How can I get this done?

推荐答案

使用AlarmManager与挂起的意图启动一个服务，使API调用服务器从服务中，创建通知，则停止该服务。

Use AlarmManager with a pending intent to start a service, make the API call to the server from within your service, create the notification, then stop the service.

/**
 * Set up recurring location updates using AlarmManager
 */
public void setUpAlarm(Application context) {
    Intent intent = new Intent(context, MyService.class);
    PendingIntent pending_intent = PendingIntent.getService(context, 0, intent, 0);

    AlarmManager alarm_mgr = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    alarm_mgr.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
            SystemClock.elapsedRealtime(), YOUR_INTERVAL, pending_intent);
}

以上code将设置一个悬而未决的意图，开始您的服务，为任何时间间隔来与YOUR_INTERVAL变量设置。从这里，您只需建立则将MyService级，让您的API调用，建立自己的通知，一旦你从服务器的响应。

The above code will set a pending intent to start your service for whatever interval you set with the YOUR_INTERVAL variable. From here, just create your "MyService" class to make your API call and build your notification once you get a response from the server.

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