android-service

问题 I developed an app and some people complains that it takes too much battery, it is the second most consuming process after the screen. However, in some devices it does not consumes that much battery. All the work my app do is in a service. The service is sticky and is running all the time (the android system may kill it when has low resources or pause it when device go to sleep), it has listener to the accelerometer as long as the screen is on, it is not foreground service and does not hold

问题 Android 8 has its background execution limits, so when we started targeting Oreo we changed our services to using JobIntentSerivce to be able to get work done. However, we have a widget that updates every few minutes with live score data. The widget's service extends the good old RemoteViewsService. How can we make sure that the widget is updated even when the app is in the background? I've taken a look at the suggestions in another SO question, but they all seem to have some caveats:

问题 Android 8 has its background execution limits, so when we started targeting Oreo we changed our services to using JobIntentSerivce to be able to get work done. However, we have a widget that updates every few minutes with live score data. The widget's service extends the good old RemoteViewsService. How can we make sure that the widget is updated even when the app is in the background? I've taken a look at the suggestions in another SO question, but they all seem to have some caveats:

问题 I have an application that uses a service to create an ArrayList of custom objects (MyObject) every x seconds. I then want my Activity to obtain this ArrayList. I'm currently planning on having the Service send a message to the Activity's handler every time it finishes the query for the data. I want the message to the Handler to contain the ArrayList of MyObjects. When building the method in the Activity to get this ArrayList out of the message, I noticed that I couldn't. If I tried msg

问题 I want to update the UI of a fragment from service .I am using GCM for sending message.I have this class for GCM : public class GcmIntentService extends IntentService { public GcmIntentService() { super("GcmIntentService"); } @Override protected void onHandleIntent(Intent intent) { Bundle extras = intent.getExtras(); GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this); // The getMessageType() intent parameter must be the intent you received // in your BroadcastReceiver. String

问题 I want to update the UI of a fragment from service .I am using GCM for sending message.I have this class for GCM : public class GcmIntentService extends IntentService { public GcmIntentService() { super("GcmIntentService"); } @Override protected void onHandleIntent(Intent intent) { Bundle extras = intent.getExtras(); GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this); // The getMessageType() intent parameter must be the intent you received // in your BroadcastReceiver. String

问题 I have a service that runs in a separate process. The service spawns a new thread in onCreate() method. This thread sends messages back to the service. If I start the app manually everything works fine - messages are received by the Handler in my service. But in my test handleMessage() method is never get called. How can I fix my test to make handleMessage() method work? Thanks! Service: public class MyService extends Service { private ServiceHandler mHandler; private final int MSG_HELLO

问题 I want to create a bound service for my app and would like it to be available for a widget to use in the future should i decide to create one. In order to decide whether to use a Messenger or extend Binder i need to know whether a widget and its corresponding app run in the same process? Thanks David 回答1: Yes. Unless you specify otherwise in the manifest (using android:process="..." ), all components of an application (widget providers, services, activities, broadcast receivers) run in the

问题 Again a question about LocalServices. How do I (re-)bind to an existing Service, after onDestroy()? The Problem: I'm binding to a Service and Starting the service from an Activity. I'm Posting runnable Objects to the Binder, for a callback (updating a progressbar) on the UI. When I close this Activity, the OS could end the lifecycle and Destroy the Activity, calling onDestroy(), right? I simulate this, calling finish() in onPause() method. So once I restart the Activity, how to I bind to the

问题 Hello I am trying to use a service to control a wakelock so I can permanently leave the screen on when my application is running. I create the wakelock and activate it in onCreate() and release it in onDestroy() however I get the error "wl cannot be resolved". Can someone explain how I can get over this? Code below: public class WakeLockService extends Service { @Override public IBinder onBind(Intent arg0) { // TODO Auto-generated method stub return null; } @Override public void onCreate() {