我有以下代码用于从服务器每隔 X 秒轮询未读通知计数:
我在 App.onCreate() 方法中通过 ScheduledThreadPoolExecutor 启动此进程。
我在 App.onCreate() 方法中通过 ScheduledThreadPoolExecutor 启动此进程。
Log.d("XXX", "Requesting Notification count from server ...");
该方法被调用了一次(我可以在Logcat中看到),但两个Retrofit回调函数都没有被调用(实际上没有任何Retrofit调试日志)。此外,“从服务器请求通知计数...”永远不会再次打印出来(即周期性任务未运行)。
我还在使用Retrofit进行其他Web服务调用(根据用户输入),它们正常工作(我可以在logcat中看到进出请求/响应)。
public class App extends Application {
private ScheduledExecutorService scheduleTaskExecutor;
...
@Override
public void onCreate() {
super.onCreate();
//region Set up the periodic notification count listener task
scheduleTaskExecutor= Executors.newScheduledThreadPool(2);
scheduleTaskExecutor.scheduleAtFixedRate(new PeriodicNotifCountFetchTask(), 0, 5, TimeUnit.SECONDS);
//endregion
}
class PeriodicNotifCountFetchTask implements Runnable {
@Override
public void run() {
Log.d("XXX", "Requesting Notification count from server ...");
EMRestClient.getmEMRestService().getNotificationCount(new Callback<NotificationCount>() {
@Override
public void success(NotificationCount response, Response unused) {
int unreadNotifCount = response.getCount();
Log.d("XXX", "Successfully fetched notification count, unread = " + response.getCount());
if (unreadNotifCount>0){
// call listener to repaint menu
for (NewNotificationListener x :notifListeners){
x.onNewNotificationReceived(response.getCount());
}
}
}
@Override
public void failure(RetrofitError error) {
Log.d("XXX", "Failed to fetch notification count from server");
}
});
}
}
}
这里是 Retrofit 代码的部分:
@POST("/notification/notification_count/")
void getNotificationCount(Callback<NotificationCount> callback);