我正在使用一个应用程序，我正在创建一个在后台工作的服务，当我从最近打开的应用程序清除我的应用程序时，此服务停止。即使我清除了应用程序，我也希望我的服务在后台运行。我正在使用小米Mi4i设备测试我的应用程序。
这是我的服务类
公共类LocalNotificationService扩展了服务{
private int i = 1;
public static final String TAG = LocalNotificationService.class.getSimpleName();
private static long UPDATE_INTERVAL = 1 * 5 * 1000; //default
private static Timer timer = new Timer();
private static final String TIME_FORMAT_LOCAL_NOTIFICATION = "HH:mm";
private boolean isNotificationFired = false;
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
return START_STICKY;
}
@Override
public void onCreate() {
super.onCreate();
_startService();
startForeground(1,new Notification());
Log.v(TAG, "service created....");
}
private void _startService() {
timer.scheduleAtFixedRate(
new TimerTask() {
public void run() {
doServiceWork();
}
}, 1000, UPDATE_INTERVAL);
}
private void doServiceWork() {
Log.v(TAG, "service working....");
try {
new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... params) {
String dateString = null;
try {
String format = "yyyy-MM-dd";
final SimpleDateFormat sdf = new SimpleDateFormat(format);
dateString = sdf.format(new Date()) + "T00:00:00";
Log.v(TAG, dateString);
} catch (Exception e) {
e.printStackTrace();
}
List<AppointmentModel> list = new RushSearch().whereEqual("Date", dateString).find(AppointmentModel.class);
if (list != null & list.size() > 0) {
for (AppointmentModel model : list) {
try {
if (model.Status.equalsIgnoreCase("Confirmed")) {
SimpleDateFormat sdf = new SimpleDateFormat(LocalNotificationService.TIME_FORMAT_LOCAL_NOTIFICATION);
Date currentTime = sdf.parse(sdf.format(Calendar.getInstance().getTime()));
String From = DateAndTimeUtil.getTimeLocale_HHmm(model.FromTime);
Date FromTime = sdf.parse(From);
long difference = currentTime.getTime() - FromTime.getTime();
int days = (int) (difference / (1000 * 60 * 60 * 24));
int hours = (int) ((difference - (1000 * 60 * 60 * 24 * days)) / (1000 * 60 * 60));
int min = (int) (difference - (1000 * 60 * 60 * 24 * days) - (1000 * 60 * 60 * hours)) / (1000 * 60);
hours = (hours < 0 ? -hours : hours);
Log.v("======= days", " :: " + days);
Log.v("======= hours", " :: " + hours);
Log.v("======= min", " :: " + min);
switch (min){
case -15: {
if(!isNotificationFired){
Bundle bundle = new Bundle();
bundle.putString(ArkaaNotificationHandler.NOTIFICATION_KEY_FROM, "Appointment Reminder");
bundle.putString(ArkaaNotificationHandler.NOTIFICATION_KEY_TITLE, "Appointment Reminder");
bundle.putString(ArkaaNotificationHandler.NOTIFICATION_KEY_MESSAGE, "You Have Appointment With " + model.Doctor.Name + "At " + DateAndTimeUtil.getTimeLocale_HHmmaa(From));
bundle.putString(ArkaaNotificationHandler.NOTIFICATION_KEY_COLLAPSE_KEY, "");
ArkaaNotificationHandler.getInstance(LocalNotificationService.this).createSimpleNotification(LocalNotificationService.this, bundle);
isNotificationFired = true;
}
break;
}
case -5: {
if(!isNotificationFired){
Bundle bundle = new Bundle();
bundle.putString(ArkaaNotificationHandler.NOTIFICATION_KEY_FROM, "");
bundle.putString(ArkaaNotificationHandler.NOTIFICATION_KEY_COLLAPSE_KEY, "");
bundle.putString(ArkaaNotificationHandler.NOTIFICATION_KEY_MESSAGE, "You Have Appointment With" + model.Doctor.Name + "At" + DateAndTimeUtil.getTimeLocale_HHmmaa(From));
if(NetworkUtils.getNetworkClass(ArkaaApplicationClass.getInstance().getBaseContext()).equalsIgnoreCase("2G")){
bundle.putString(ArkaaNotificationHandler.NOTIFICATION_KEY_TITLE, "For Better Call Experience Please Switch To High BandWidth Network ");
}else{
bundle.putString(ArkaaNotificationHandler.NOTIFICATION_KEY_TITLE, "Appointment Reminder");
}
ArkaaNotificationHandler.getInstance(LocalNotificationService.this).createSimpleNotification(LocalNotificationService.this, bundle);
isNotificationFired = true;
}
}
case -4:
case -14:
isNotificationFired = false;
break;
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
return null;
}
}.execute();
} catch (Exception e) {
Log.v(TAG, e.toString());
}
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onTaskRemoved(Intent rootIntent) {
stopSelf();
}
private void _shutdownService() {
if (timer != null) timer.cancel();
Log.i(getClass().getSimpleName(), "Timer stopped...");
}
@Override
public void onDestroy() {
super.onDestroy();
_shutdownService();
Log.v(TAG, "service destroyed.....");
// if (MAIN_ACTIVITY != null) Log.d(getClass().getSimpleName(), "FileScannerService stopped");
}
}
答案 0 :(得分：0)
在您的活动中，执行以下操作以启动您的服务。例如在onCreate（）中：
Intent intent = new Intent(this, MyService.class);
startService(intent);
在您的服务中，在onCreate（）中执行以下操作：
int NOTIFICATION_ID = 2707;
NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
Uri sound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
builder.setSmallIcon(android.R.drawable.ic_menu_info_details)
.setContentTitle("MyAppName")
.setContentText("the service is running!")
.setTicker("the service is running!")
.setOnlyAlertOnce(true)
.setOngoing(true)
.setSound(alarmSound);
Notification notification = builder.build();
startForeground(NOTIFICATION_ID, notification);
答案 1 :(得分：0)
只需隐藏stopSelf（）;和_shutdownService（）;或尝试WakefulBroadcastReceiver方法
https://developer.android.com/reference/android/support/v4/content/WakefulBroadcastReceiver.html