intentservice

Does calling stopService() stops all awaiting service intent

由 て烟熏妆下的殇ゞ 提交于 2020-01-17 06:51:43
问题 In my application, I'm starting a Service multiple times even when it's running. Its a service that is perpetually running. My question here is, when I call stopService() , will it stop the current running Service and ALSO clear the stack of the waiting intent? Because I want to be sure it is not running anymore. 回答1: I dont stop my Service , it is STICKY Service . When starting app i am controlling the service is running or not like : public static boolean isMyServiceRunning(Class<?>

Android中的线程池

由 寵の児 提交于 2020-01-15 00:20:53
线程池的好处： 重用线程池中的线程，避免因为线程的创建和销毁所带来的性能开销 能有效控制线程池的最大并发数，避免大量线程之间因互相抢占系统资源而导致的阻塞现象 能够对线程进行简单的管理，并能提供定时执行以及指定间隔循环执行等功能 Android中的线程池概念来源于Java中Executor.Exeuctor是一个接口，它的真正实现是ThreadPoolExecutor,它提供了一系列参数来配置线程池，通过不同的参数可以创建不同的线程池 ThreadPoolExecutor的构造函数： public ThreadPoolExecutor ( int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue ThreadFactory threadFactory) { } 参数说明： corePoolSize：线程池中的核心线程数，默认情况下，核心线程会在线程池中一直存活，即时它们处于闲置状态。如果将ThreadPoolExecutor的allowCoreThreadTimeOut属性设置为true，那么他将执行超时策略，由我们指定超时时间，超过这个时间，该线程就会被终止 maximumPoolSize：线程池中所能容纳的最大线程数

IntentService stops working when app is removed from recent apps

由 南楼画角 提交于 2020-01-14 06:49:29
问题 I am using geofence in my app and based on geofence events (Enter or Exit) I want to perform some action. Geofence documentation says that once you set geofence it will trigger events automatically and you can catch this events with IntentService. For that I have made intentservice as below: GeofenceTransitionsIntentService.java public class GeofenceTransitionsIntentService extends IntentService { Handler mHandler; public GeofenceTransitionsIntentService() { super(

Android Oreo JobIntentService Keep running in background for Android 7 &below and crashing often in Android 8 & above

由 五迷三道 提交于 2020-01-12 03:53:08
问题 I have recently replaced all my service to foreground services and JobIntentService since there are some background execution limits (https://developer.android.com/about/versions/oreo/background) in oreo and above. As per documentation, JobIntentService acts like Intent Service for Android 7 & below and acts like JobScheduler for Android 8 & above. I have noticed there is an issue in new JobIntentService provided by Google. Android 8 & above: There is a crash happening continuously in android

IntentService : How to enqueue correctly?

由 ε祈祈猫儿з 提交于 2020-01-11 03:14:06
问题 In my code i'm using an IntentService to listen to location updates (either GPS or network updates) and this IntentService is triggered when an event is received, so it is started with startService() from any activity. public class AddLocationService extends IntentService implements LocationListener { /*My code here*/ } @Override protected void onHandleIntent(Intent intent) { if(getOldLoc() == null) { //Get a new location this.locationManager.requestLocationUpdates(LocationManager.NETWORK

Background Process to scan the location of the user at regular intervals and update the local database even when the app is not open

由 杀马特。学长 韩版系。学妹 提交于 2020-01-11 02:23:37
问题 I am creating an app that checks for user locations every half an hour and updates the location of the user in the local database and then runs CRUD queries based on the user's location even when the app is not running. How do i do it ? I have referred to this http://techtej.blogspot.com.es/2011/03/android-thread-constructspart-4.html article and i am still confused about which is the correct approach for my result ? There are 4 options according to the article for what i intend to achieve

Background Process to scan the location of the user at regular intervals and update the local database even when the app is not open

由 删除回忆录丶 提交于 2020-01-11 02:23:05
问题 I am creating an app that checks for user locations every half an hour and updates the location of the user in the local database and then runs CRUD queries based on the user's location even when the app is not running. How do i do it ? I have referred to this http://techtej.blogspot.com.es/2011/03/android-thread-constructspart-4.html article and i am still confused about which is the correct approach for my result ? There are 4 options according to the article for what i intend to achieve

service相关总结

由 南楼画角 提交于 2020-01-11 00:19:48
1.service概念： Service是四大基础组件之一，它和Activity一样都是Context的子类，只不过它没有UI界面，是在后台运行的组件。 2.生命周期： Service对象不能自己启动，需要通过某个Activity、Service或者其他Context对象来启动。启动的方法有两种，Context.startService和Context.bindService()。两种方式的生命周期是不同的，具体如下所示。 Context.startService方式的生命周期： 启动时，startService –> onCreate() –> onStart() 停止时，stopService –> onDestroy() Context.bindService方式的生命周期： 绑定时,bindService -> onCreate() –> onBind() 解绑定时,unbindService –>onUnbind() –> onDestory() 3.service与intentService区别 Android中的Service是用于后台服务的，它是依赖于应用程序的主线程的，也就是说，在更多时候不建议在Service中编写耗时的逻辑和操作，否则会引起ANR。 那么我们当我们编写的耗时逻辑，不得不被service来管理的时候，就需要引入IntentService

Android Alert dialog from inside an intent service

由 蓝咒 提交于 2020-01-09 05:08:05
问题 I want to display an alert dialog from inside an intent service. AlertDialog alertDialog = new AlertDialog.Builder(this).create(); This throws the following exception Unable to add window — token null is not for an application I have tried IntentService.this and getApplicationContext() as well. Between i dont want to do it using an activity. I just want to show a simple alert dialog with a little text. 回答1: Need Activity for display AlertDialog , because we can't display Dialog from any

onHandleIntent() - Wallpaper change not working correctly

由 风格不统一 提交于 2020-01-06 10:18:14
问题 I am using the IntentService to change wallpaper in the background. Using the code below inside the main Activity class the wallpaper changes to an image correctly, but when the code is added to the onHandleItent() the background changes to a different solid color each time. Is this a memory issue or what? Code inside Activity class - works correctly: public void ChangeWallpaper(String imagepath) { DisplayMetrics displayMetrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay()
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