Question

我正在努力做一个非常小的应用程序。我的应用会获取一个网址：

example.com/response.json

当这个回复＆＃34; true＆＃34;我的应用会发送一条通知消息：

Your thing is ready! Let's see.

但我不知道如何制作它？我需要定时器还是什么？

我找到了这个方法：

private static void generateNotification(Context context, String message) {
    NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    Notification notification = new Notification(R.drawable.ic_launcher, "Message received", System.currentTimeMillis());
    // Hide the notification after its selected
    notification.flags |= Notification.FLAG_AUTO_CANCEL;

    //adding LED lights to notification
    notification.defaults |= Notification.DEFAULT_LIGHTS;

    Intent intent = new Intent(context, MessageReceivedActivity.class);
    intent.putExtra("payload", payload);

    PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, Intent.FLAG_ACTIVITY_NEW_TASK);
    notification.setLatestEventInfo(context, "Message", "New message received", pendingIntent);
    notificationManager.notify(0, notification);
}

但如何每5分钟检查一次响应并发送通知？

Answer 1

使用HttpURLConnection或HttpClient AsyncTask doInBackground方法下载此文件。获取数据的示例：

HttpGet reqest = new HttpGet(yourURL);
HttpClient client = new DefaultHttpClient();
HttpResponse response = client.execute(reqest);

String result = EntityUtils.toString(response.getEntity());

用于解析JSON使用JSONObject(String json)传递result（和/或根据需要可选JSONArray）

如果结果符合您的预期，请使用Toast.makeText(...)或通知（example here）

在获取数据时发送PUSH通知Android

1 个答案: