【发布时间】：2016-08-08 06:16:01
【问题描述】：
我在 android 应用程序中有一项服务，我想在后台连续运行，即使应用程序从任务管理器中被杀死。我当前的代码适用于棒棒糖之前的版本。但在棒棒糖中它不起作用（在棒棒糖中它停止来自任务管理器）。如何解决这个问题。
服务类
public class MyService extends Service {
int total_time = 1000 * 60 * 60 * 24; // total one day you can change
int peroid_time = 10000; // one hour time is assumed to make request
@Override
public void onCreate() {
}
/** The service is starting, due to a call to startService() */
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
new CountDownTimer(total_time, peroid_time) {
public void onTick(long millisUntilFinished) {
// make request to web and get reponse and show notification.
MakingWebRequest();
Toast.makeText(MyService.this, " Tesitng the data", Toast.LENGTH_LONG).show();
}
public void onFinish() {
Toast.makeText(MyService.this, " ending............", Toast.LENGTH_LONG).show();
//
}
}.start();
// Let it continue running until it is stopped.
Toast.makeText(this, "Service Started", Toast.LENGTH_LONG).show();
return START_STICKY;
}
public void MakingWebRequest() {
NotificationManager notif = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
NotificationCompat.Builder builder = new NotificationCompat.Builder(MyService.this);
Notification notify ;
PendingIntent pending = PendingIntent.getActivity(getApplicationContext(), 0, new Intent(), 0);
notify = builder.setContentIntent(pending)
.setStyle(new NotificationCompat.BigTextStyle().bigText(message1))
.setSmallIcon(R.drawable.push).setTicker(excep).setWhen(System.currentTimeMillis())
.setAutoCancel(true).setContentTitle(message1)
.setContentText(message1).build();
// notif.notify(NOTIFICATION, notify);
// notif.notify(0, notify);
startForeground(1, notify);
}
}
/** A client is binding to the service with bindService() */
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
/** Called when all clients have unbound with unbindService() */
@Override
public boolean onUnbind(Intent intent) {
return mAllowRebind;
}
/** Called when a client is binding to the service with bindService()*/
@Override
public void onRebind(Intent intent) {
}
主要活动
Intent serviceIntent = new Intent(this, MyService.class);
serviceIntent.setPackage(this.getPackageName());
startService(serviceIntent);
【问题讨论】：
-
所以你想每小时做一次？您不需要为此提供持续的服务。你每小时启动一个服务。 Google GcmNetworkManager 和 PeriodicTask。
-
我不希望 gcm 之类的东西..请留在我的代码和逻辑上，只是如何防止停止应用程序
-
你无法阻止它。我为您提供了一个替代方案，这也恰好是最佳实践。 GCM != GcmNetworkManager。 GcmNetworkManager = JobScheduler，这正是你所需要的。当网络可用时，它会定期运行任务（如果您设置了它）。是的，有时我们必须重写代码。
标签： android android-service android-5.0-lollipop android-background android-task