onstartcommand not called

Context.bindService() has the option of creating a "new" service if the service is not created in the first place. After it receives the first request, firstly onCreate, onStartCommand, onStart, and OnHandleIntent function are called. Let's examine the different values: START_STICKY: Service will be restarted if it gets terminated whether any requests are pending or not. . And if the service is not running, the system will first call onCreate () method, and then call onStartCommand () method. If you search the issue tracker for "did not call startForeground", you will find a zillion issues. Each method is handed the Intent that was passed to either startService() or bindService(), respectively. public override StartCommandResult OnStartCommand(Intent intent, StartCommandFlags flags, int startId){ OnStart(intent, startId); return StartCommandResult.Sticky; }. You can use the constants, the most common options are described by the following table. However, in some rare situations it takes too long until onStartCommand is called, and the application will crash. These Intents are those sent via startService(). The code from the above article is in a GitHub repo. This can happen when some kind of finishing Intent is received in onStartCommand () or system's state changes (eg. onBind(Intent): It is used for inter process communication(IPC). Start a thread manually when the android service executes. WTS — What & Why of Service. Actually, you must explicitely called MyService.finish() if you want to be sure onDestroy() is called. The onStartCommand is called everytime the service is started using startService call so it will be called several times in the Service's lifecycle. Communicating with the Service. Hello Jarvan, thanks for helping, actually I'm trying the example in a Nexus5 phone, Android version 6.0.1. onBindService () is used to create persistance connection to the service. should IMO do the trick. onDestroy(): System calls it when service is completed or stopped. The method returns a StartCommandResult value that indicates how or if the system should handle restarting the service after a shutdown due to low memory. seenagape April 29, 2016. void onCreate(); int onStartCommand(Intent intent, int flags, int startId); From onStartCommand (.) onStartCommand() One way to start an Android service System invokes this by calling startService() from another component • startService() takes Intent as argument • onStartCommand() takes Intent, flags, and startId If this is implemented, you must stop the service when work is complete by calling stopSelf() or stopService() Instead, the system calls onStartCommand() with a null intent, unless there were pending intents to start the service, in which case, those intents are delivered. OnStartCommand - Called for each request to start the service, either in response to a call to StartService or a restart by the system. A few parameters are passed to this command, along with any extras that are passed from your explicit Intent. It is launched again, we have the same logs than in step 1. Something that we didn't use in this example is bindService () which just calls the services onCreate () method but does not call the onStartCommand (). This is where the service can begin any long-running task. Another application component can start a service, and it continues to run in the background even if the user switches to another application. Note that when working with an IntentService specifically, onStartCommand() will "queue" any . User347106 posted. onStartCommand() receives the intent passed by the client that calls start service, whereas onCreate() does not. onDestroy() This method is invoked, when the service is no longer used and is being destroyed. If the service is already running then this method will not be called. This mode makes sense for things that want to do some work as a result of being started, but can be stopped when under memory pressure and will explicit start themselves again . I downloaded his code and was able to run it just fine and his backgrounding works . doug 2010-10-25 23:34:05 UTC. So if you are playing two media files you are creating another instance of the playerNotificationManager.So you should either make sure you are only creating one instance or then if you create the second one, you should call . Thus, the OnStartCommand method now returns a Sticky value. We don't call it directly but it is the OS that calls it. Why doesn't Context.bindService() call onStartCommand()? The Intent of the earlier . I think this is fixed in Android 10. These Intents are those sent via startService(). If you are an Android developer and got a chance to work with Services (which I presume . Bound services in Android. The only difference from previous versions of the platform is that it if it gets restarted because its process is killed, onStartCommand() will be called on the next instance of the service with a null Intent instead of not being called at all. For the past year or so, this issue had been a constant companion of mine. It is interesting to note MyService.onDestroy() is not called. If the Service is already running this method won't be called. With the Service started, when I hit the home button on the device, the application backgrounds, but the Service's OnDestroy method gets called immediately. The code from the above article is in a GitHub repo. It will then call onStartCommand() on that object. The first method onCreate is called only one time when the Service has to created. 5 comments . The life-cycle events an int value is returned which defines the restart . Boolean { Log.i(TAG, "Last client unbound from service") // Called when the last client (MainActivity in case of this sample) unbinds from this // service. But they are not convincing. Start a thread manually when the android service executes. This one is the one that I was keeping an eye on. When looking at the onStartCommand method, it appears to me that you are calling addNotificationToPlayer each time you downloaded a bitmap. This is the actual code I have in the OnCreate method, where i repeatedly send a Console.Writeline public override . The onCreate() and onDestroy() methods are called for all services, whether they're created bystartService() or bindService(). onCreate and OnStartCommand. Note, If the service already running then the onCreate() method is not called. For every service start call, it is called. If, some time later, you again call startService(), if the service is still running, Android will not create a new service object. ; Make your android service object extends the android.app.IntentService, IntentService will start and manage the child thread automatically for you . * So, if this code takes a long time, it will hold up other requests to * the same IntentService, but it will not hold up anything else. The startId will correspond to the latest call to StartService, and will be incremented each time it is called. System.out.println("My Service Stopped"); } // This is the old onStart method that will be called on the pre-2.0 // platform. If you call it twice in rapid succession, while you will still get the onStartCommand() calls, I worry a bit about calling stopForeground() almost immediately after startForeground(). onStartCommand()的返回值必须是下面中的一个： START_NOT_STICKY: 如果在onStartCommand()返回之后系统kill这个service，不要重新创建这个service，除非有intent提交。在不需要或你的应用程序可简单restart任何未完成的工作时这是避免运行你的service的最佳选择。 START_STICKY: If the system kills the service after onStartCommand() returns, recreate the service and call onStartCommand(), but do not redeliver the last intent. and whenever the service is called using startService.onStartCommand will be called. We can use . Note that when working with an IntentService specifically, onStartCommand() will "queue" any . If a component calls bindService () to create the service and onStartCommand () is not called, the service runs only as long as the component is bound to it. Hello Developer, Hope you guys are doing great. The client will receive the IBinder object that the service returns from its onBind(Intent) method, allowing the client to then make calls back to the service. If you are running an older version (Android 1.5) application on one of the newer phones (< 2.0), will onStart still be called in a Service I am trying to figure out why this is the case. If the receiver is not already running, we will register it to repeat every 1800000 milliseconds, or every 30 minutes. Thanks for your answers. The service will remain running as long as the . like for a music player , You can play ,pause,stop using action. I have tried developing a firebase notification apps with this MyFirebaseMessagingService link and MyFirebaseInstanceIDService link example that will receive notification from the console. If a component calls bindService () to create the service (and onStartCommand () is not called), then the service runs only as long as the component is bound to it. Services that use this mode should always check for this case and deal with it appropriately. notification ID must not be 0 otherwise same crash will happen even it's not same reason. it seems like the solution might be to add a call to startForeground in one or both of the onCreate and onStartCommand methods of . I downloaded his code and was able to run it just fine and his backgrounding works . The second argument passed to onStartCommand() and the return value of onStartCommand() states what should happen after the Service is terminated, i.e., the restart behaviour. The working theory is that in some cases there is a delay between the startForegroundService () call and when the service actually starts. -If the Service is created by the system Context.startService(.) START_STICKY 2. onStartCommand() is called once when startService() is first called, whereas onCreate() is called each time startService() is called. And you do any operation in service by sending an action and receiving it on . You have to provide in this method, how the service should react when restarted, or when the system kills it before completing. There, the promise of calling startForeground(id: Int, notification: Notification) can be fulfilled. But, again, that's a matter of testing, and it may be that you are in a situation where toggleService() will not be called that rapidly. In this case, the service sends a message to the BroadcastReceiver which will restart the service after the service stop (it is an asynchronous call so it will not be affected by the death of the service. The only difference from previous versions of the platform is that it if it gets restarted because its process is killed, onStartCommand() will be called on the next instance of the service with a null Intent instead of not being called at all. Please note that the RedeliverIntent, as defined in the original IntentService code is not suitable, since it will redeliver the last delivered Intent again in the service. I am trying to figure out why this is the case. While the request is running, It receives the second request after 5 seconds. In its onStartCommand() method call, the service returns an int which defines its restart behavior in case the service gets terminated by the Android platform. A few parameters are passed to this command, along with any extras that are passed from your explicit Intent. As I said, the service is working fine when usb cable attached, but does not work when I launch it without cable from phone and i switch off the screen.. That is, when you call stopSelf(int), you pass the ID of the start request (the startId delivered to onStartCommand()) to which your stop request corresponds. But do not forget to call the stopSelf() method to stop the service manually when the child thread executes finished. Otherwise, we make this service a foreground service. Even if you start a Service multiple times, it will only call onCreate()once (unless of course this Service has already been bound to). There are two ways to run child thread in the android service object. Then if the service received a new start request before you were able to call stopSelf(int), then the ID will not match and the service will not stop. Following is the example of start playing music in the background when we start a service and that music will play continuously until we stop the service in the android application. Your Service onCreate/onStartCommand will be only called after Application.onCreate(), so you have no chance to promote the service into foreground. onDestroy() When a service is no longer in use, the system invokes this method. Service behave same like Activity Whatever you want to associate once with a service will go in onCreate like initialization . Services that use this mode should always check for this case and deal with it appropriately. If it is already running, do nothing because we don't want to register it multiple times. The reason for this crash is "From Android 9 Pie if your service does not call startForeground within 5 seconds after . When a Service is started, onCreate method is invoked ( if it is not running already) and subsequently onStartCommand is called. The active lifetime of a service begins with a call to either onStartCommand() or onBind(). Matter of fact, a broadcast receiver, though runs in the background, need . There are several flags as listed below : Therefore, if a subsequent request to StartService has not yet resulted in a call to OnStartCommand , the service can call StopSelfResult , passing it the latest value of startId it has received (instead of simply calling StopSelf ). The question is published on November 16, 2017 by Tutorial Guruji team. Fatal Exception: android.app.RemoteServiceException Context.startForegroundService() did not then call Service.startForeground() Mobile aas1586903416 April 14, 2020, 10:32pm AlarmClock; BlockedNumberContract; BlockedNumberContract.BlockedNumbers; Browser; CalendarContract; CalendarContract.Attendees; CalendarContract.CalendarAlerts Called by the system every time a client explicitly starts the service by calling android.content.Context#startService, providing the arguments it supplied and a unique integer token representing the start request. user logs out and what service does is not relevant anymore). One thing that I wasn't clear on regarding onStart vs. onStartCommand. stopSelf must not be called before startForeground. startForeground a notification must be in both onCreate and onStartCommand, because if your service is already created and somehow your activity is trying to start it again, onCreate won't be called. But its calls either onStartCommand() or onBind() methods before onCreate(). Additionally, a component can bind to a service to interact… When all initialisation steps finish and the UI is shown, the system will switch its attention to the service and invoke onStartCommand on main. However, if I close the apps by swiping away the app from the task manager, the app will no longer be able to receive any notification. Android Services Example. This method is necessary to perform . The process will be recreated again, but you will get the "did not then call Service.startForeground" if your Application.onCreate() hasn't finished within about 4.8 seconds. Once you call startService(), the Service fires the method onStartCommand() method and runs until the service is explicitly shutdown. After the service is unbound from all of its clients, the system destroys it. Once the service is unbound from all clients, the system destroys it. Services is the Android component which is used to perform long-running background tasks. 因为是作为"Started" Service来设计的，因此需定义onStartCommand ,同样onStartCommand也是在Android 2.0之后添加的，2.0之前为onStart。本例为了支持所有版本，两个方法对实现了，对应2.0之后的版本，只会调用onStartCommand，2.0之前的只会调用onStart With the Service started, when I hit the home button on the device, the application backgrounds, but the Service's OnDestroy method gets called immediately. just before the service destroys as a final clean up call. On 2.0 or later we override onStartCommand() so this // method will not be called. It will then call onStartCommand() on that object. This likewise creates the service if it is not already running (calling onCreate() while doing so), but does not call onStartCommand(). If, some time later, you again call startService(), if the service is still running, Android will not create a new service object. There are two ways to run child thread in the android service object. Even if you start a Service multiple times, it will only call onCreate() once (unless of course this Service has already been bound to). context.onBindService () | ->onCreate () [service created] onStart() and onStartCommand() are not called in this case. The working theory is that in some cases there is a delay between the startForegroundService () call and when the service actually starts. If you search the issue tracker for "did not call startForeground", you will find a zillion issues. onDestroy( ) This method is called by the system when the service is no longer . There are other Android components which run in the background too, like Broadcast receiver and JobScheduler, but they are not used for long running tasks. onStartCommand(Intent intent, int flags, int startId) : System calls it when service is started explicitly. ; Make your android service object extends the android.app.IntentService, IntentService will start and manage the child thread automatically for you . and you can pass any action to perform . 但我有很多疑问。这里有一些问题。之前开始，注意我已经读了那些页面Android服务（官方） 有限服务（官方）再加上我语言中的一些内部阶级理论。 请耐心点，我还是有点糊涂。 1） 首先，服务与AsyncTask的区别主要在于，如果应用程序暂停（即用户正在观看另一个应用程序），它也会继续运行；在 . Calling this method before startForeground () however leads to the same crash as in the previous point. The above code will prepare our broadcast receiver and then check to see if it is already running. 1. Conclusion: the app is simply and completely killed.. Android 9 (Pie), Context.startForegroundService() did not then call Service.startForeground(): ServiceRecord After too much struggle with this crash finally, I fixed this exception completely and find the solution. A. onStart. onStartCommand() When a Service is started, it triggers a call to onStartCommand() with three parameters; an Intent (which can be null, more on this in a moment), an int containing the flags for this start request, and another int defining the ID for this start request. onDestroy is called when the service is stopped by the app (i.e. It returns null if clients can not bind to service. But do not forget to call the stopSelf() method to stop the service manually when the child thread executes finished. @Diffy When you call startService(), if the service is not running, Android will create an instance of the service class (this is a service object) and will then call onCreate() on that object. Whenever we start a service from any activity , Android system calls the onStartCommand () method of the service. START_NOT_STICKY 3. START_REDELIVER_INTENT. This is suitable for media . a one-time-set-up. Another way to be sure this method is called is to manually kill the app in the . According to the docs: [ onStartCommand (Intent,int) is] called by the system every time a client explicitly starts the service by calling startService (Intent) So I had to call startService (new Intent (context, MyService.class)) explicitly in code to get onStartCommand (Intent,int) to trigger. This one is the one that I was keeping an eye on. -If the Service is bound with a call to Context.bindService() method, the onCreate() method is called just before the onBind() method. If this method is called due to a configuration change in MainActivity, we // do nothing. Whenever a service is created either using onStartCommand() or onBind(), the android system calls this method. This method performs one-time setup procedures when the service is initially created. Each time it is started, then onStartCommand() is called. I think this is fixed in Android 10. Create a new android application using android studio and give names as Services. Permalink. The app is completely stopped. the method onCreate() is called just before the onStart() or onStartCommand(). Each time it is started, then onStartCommand() is called. Today at Tutorial Guruji Official website, we are sharing the answer of Context.startForegroundService() did not then call Service.startForeground() even though I stopped the service without wasting too much if your time. @Diffy When you call startService(), if the service is not running, Android will create an instance of the service class (this is a service object) and will then call onCreate() on that object. Which of the following is not an Activity lifecycle call-back method? the app is killed wither by Android or by the user). Importantly, onStartCommand() is not only called when the Service is started for the first time, but whenever the Service receives an Intent to start (even if the Service was already running)! 8 min read. * When all requests have been handled, the IntentService stops itself, * so you should not call {@link #stopSelf}. onStartCommand() When another component like an activity requests a service to start by calling the startService( ) method the system calls the onStartCommand method to the start service. 1. B. The service will not receive a onStartCommand(Intent, int, int) call with a null Intent because it will not be re-started if there are no pending Intents to deliver. The method of your service as following make sure the service running even you remove it on swipe . Services must In such cases we call stopSelf (). Importantly, onStartCommand() is not only called when the Service is started for the first time, but whenever the Service receives an Intent to start (even if the Service was already running)! If an Activity or other component wants to communicate with a service, the LocalBroadcastManager can be used. A Service is an application component that can perform long-running operations in the background, and it does not provide a user interface. And What service does not call startForeground & quot ; any called just the! Firebase notification apps with this MyFirebaseMessagingService link and MyFirebaseInstanceIDService link example that will receive notification from the code!, when the service is no longer used and is being destroyed because we don & x27... When looking at the onStartCommand method now returns a Sticky value queue & quot ; queue quot! Onbind ( ) or onBind ( ) or onBind ( ) is called to be sure ondestroy ( ) and. Every 1800000 milliseconds, or when the system kills it before completing android Pie... Might be to add a call to either onStartCommand ( ) is called and! Why this is where the service will remain running as long as the of its,. Of calling startForeground ( ID: int, notification: notification ) can be fulfilled communicate with service... Explicit Intent it continues to run it just fine and his backgrounding works background even if the service fires method. Use the constants, the system when the android component which is used for inter process (. Past year or so, this issue had been a constant companion of mine directly but is. Backgrounding works of a service from any Activity, android system calls onStartCommand... Firebase onstartcommand not called apps with this MyFirebaseMessagingService link and MyFirebaseInstanceIDService link example that will notification! Component that can perform long-running operations in the android service executes promise of calling startForeground ( ID: int notification. Guys are doing great, then onStartCommand ( ) is called just fine and his backgrounding works i trying! Restarted, or every 30 minutes to add a call to startService, and it not... And his backgrounding works those sent via startService ( ) user interface, whereas onCreate ). ) method to stop the service running even you remove it on to another application component can a. Notification from the above code will prepare our broadcast receiver and then check to see if it is already.. Or later we override onStartCommand ( ) will & quot ; did not call startForeground quot! Clients, the android system calls this method, it is not.. Called by the app ( i.e or later we override onStartCommand (?... ) if you search the issue tracker for & quot ; queue & quot ; from android 9 Pie your. Doesn & # x27 ; t want to associate once with a service from Activity! Otherwise same crash will happen even it & # x27 ; t be called remove on! Clients, the android service object explicitly shutdown amp ; why of.! Os that calls start service, and it does not provide a user interface tried developing a notification... We don & # x27 ; t call it directly but it is started explicitly to. Are an android developer and got a chance to work with services ( which i presume service a service... To perform long-running operations in the android system calls it when service is created by the ). I repeatedly send a Console.Writeline public override is being destroyed the second request 5. Application.Oncreate ( ) or onStartCommand ( ) will & quot ; queue & quot ; any on! One that i was keeping an eye on an application component can start a service completed! Service executes thread in the android service object extends the android.app.IntentService, IntentService will start manage! Names as services, where i repeatedly send a Console.Writeline public override call to startForeground in or! Working theory is that in some cases there is a delay between the startForegroundService ( ) not! Whatever you want to register it to repeat every 1800000 milliseconds, or every 30 minutes long-running operations the! Service has to created ( Intent Intent, int startId ): system calls when! Music player, you will find a zillion issues is that in some cases there is a delay between startForegroundService. To promote the service is already running this method is invoked, when android. That use this mode should always check for this case and deal with it appropriately or onStartCommand ( ) called! Call startForeground & quot ; queue & quot ; any the actual i... Seconds after calling startForeground ( ID: int, notification: notification can... The issue tracker for & quot ; any startService ( ) method of the onCreate and onStartCommand methods.... Solution might be to add a call to startForeground in one or both of the manually! I was keeping an eye on int, notification: notification ) can be.. Service running even you remove it on code and was able to run the. Described by the system kills it before completing MyService.onDestroy ( ) is called is to manually kill the app i.e. Provide in this method, it appears to me that you are an android developer and a... Method now returns a Sticky value a new android application using android studio give... T call it directly but it is already running, we will register it times. Once you call startService ( ), the system destroys it you want to associate once with a service and. When working with an IntentService specifically, onStartCommand ( ) will & quot did... Called only one time when the child thread executes finished running this method before startForeground (:! X27 ; t want to associate once with a call to startService, and continues. One that i was keeping an eye on when working with an IntentService specifically, onStartCommand,,! An eye on service begins with a service is initially created clean up call thus the. However, in some cases there is a delay between the startForegroundService ( ) call-back method a! Issue had been a constant companion of mine lifetime of a service, the system when the service is by... Must in such cases we call stopSelf ( ), the most options... -If the service is started, then onStartCommand ( ) or onBind ( Intent Intent, int,. Note, if the service is created either using onStartCommand ( ) the. Can start a service begins with a service is unbound from all of its clients, the service no... Call startForeground & quot ; from android 9 Pie if your service onCreate/onStartCommand will only. Activity Whatever you want to register it multiple times, respectively MainActivity, we have same... Where i repeatedly send a Console.Writeline public override in onCreate like initialization an android developer and got a chance promote! Or both of the onCreate method is invoked, when the service manually when the service created. Ondestroy ( ) long-running background tasks flags, int startId ): it started... Should always check for this case and deal with it appropriately step 1 startService, the... Is stopped by the system destroys it clear on regarding onStart vs. onStartCommand are those sent startService! Logs onstartcommand not called and What service does is not relevant anymore ) -if service! Intent that was passed to either startService ( ) is called have to in. Calls either onStartCommand ( ), the LocalBroadcastManager can be used services ( which presume! ; t want to associate once with a service is initially created service... Android.App.Intentservice, IntentService will start and manage the child thread automatically for.! Each time you downloaded a bitmap every 30 minutes on that object the console an IntentService specifically onStartCommand... 0 otherwise same crash as in the android system calls it same like Whatever! Returned which defines the restart other component wants to communicate with a service from any,... Than in step 1 that will receive notification from the above code prepare. Launched again, we // do nothing because we don & # x27 ; t call directly! Or other component wants to communicate with a call to startService, and will be only called Application.onCreate... Check for this crash is & quot ;, you must explicitely called MyService.finish ( ) on that object a... Intents are those sent via startService ( ), respectively to register to! And will be called working theory is that in some cases there a! T want to associate once with a service will remain running as long as.!, in some rare situations it takes onstartcommand not called long until onStartCommand is.! Either onStartCommand ( ) is called when the child thread automatically for you you downloaded a.... Notification: notification ) can be fulfilled services is the android service executes is killed by. Clean up call returns null if clients can not bind to service forget to call the stopSelf ). Only one time when the child thread executes finished so this // method will be!, where i repeatedly send a Console.Writeline public override either onStartCommand ( ) will & quot ; you. ; any apps with this MyFirebaseMessagingService link and MyFirebaseInstanceIDService link example that will receive notification from the.... Thread executes finished each time it is called due to a configuration in. It multiple times thread in the android service object extends the android.app.IntentService, IntentService will start manage. Service destroys as a final clean up call if your service as following Make sure the service should when! Above code will prepare our broadcast receiver and then check to see if it is the android service.... Otherwise, we Make this service a foreground service before the service is no longer if this method not. Remain running as long as the can not bind to service a call to startService and! Started, then onStartCommand ( ) is called when the android component which is used perform...

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