android intentservice tutorial

Category: C #, Android, VS2015;Date Created: 2016-03-01 I. INTRODUCTIONTo further simplify the use of the intent filter, the Android system also provides a Intentservice class, so that you do not need to rewrite other methods, directly implement a class that inherits from Intentservice, Then rewrite the Onhandleintent

Android BASICS (II), Service and IntentService, androidintentI. Overview the lifecycle of the activity of the four major components in the previous article. This article will introduce another component service that is most similar to the activity and its subclass intentService, the service component is the most similar to the activity component among the four

In Android development, we may encounter such a business need, a task is divided into several sub-tasks, sub-tasks executed sequentially, after the completion of all subtasks, the task is only successful. Then, it is possible to do this with a few sub-threading sequence execution, but each thread must be manually controlled, and another child thread will be opened after one of the sub-threads has finished executing. Or, put them all in one thread and

OnDestroy () {Super.ondestroy (); }}After launching the application, print as follows:We found that: started two services, performed a oncreate, two times Onstartcommand and thread id=1, stating that the service was executed on the UI thread, performed two onhandleintent and thread id = 234, explaining the abstract method Onh The andleintent is executed in a sub-thread, so the time-consuming task can be executed in this method.And you will find that when the second task is finished, the printou

Android IntentService vs ServiceAndroid IntentService vs Service As we all know, services in Android are used for background services. When an application is mounted to the background, services, such as playing music, are introduced to ensure that some functions in the application can still work. For the service, the o

the corresponding Looper,handler and add a Message object with the customer intent in the MessageQueue, When Looper finds a message, it then gets the Intent object by calling your handler in Onhandleintent ((Intent) msg.obj) and stops its service after processing. This means that the life cycle of intent is consistent with the task you are dealing with, so this class is very good with the download task, and the service itself ends the exit after the download task finishes. The characteristics o

polling messages are sequential, so when there are multiple background tasks, will be executed in the order of the outside.Example: class myintentservice extends intentservice{ PublicMyintentservice (String name) {Super(name); } @Overrideprotected voidOnhandleintent (Intent Intent) {String Name=intent.getstringextra ("Football"); LOG.I (Constants.log,name); } @Override Public voidOnDestroy () {Super. OnDestroy (); LOG.I (Constants.LOG,

What is intentservice?The official explanation is: Intentservice is a base class for services that handle asynchronous requests (expressed as intents) on demand. clients send requests through android. content. context. startservice (intent) CILS; the service is started as needed, handles each intent in turn using a worker thread, and stops itself when it runs out

the corresponding Looper,handler and add a Message object with the customer intent in the MessageQueue, When Looper finds a message, it then gets the Intent object by calling your handler in Onhandleintent ((Intent) msg.obj) and stops its service after processing. This means that the life cycle of intent is consistent with the task you are dealing with, so this class is very good with the download task, and the service itself ends the exit after the download task finishes. The characteristics o

"); I.putextras (bundle); StartService (i); Intent i2 =NewIntent ("Cn.scu.finch"); Bundle Bundle2 =NewBundle (); Bundle2.putstring ("TaskName","Task2"); I2.putextras (Bundle2); StartService (I2); StartService (i);//Multiple start-up}}Operation Result:　Intentservice opens a thread in the OnCreate () function to process all the tasks of the intent request object in turn by Handlerthread.　　 Passed to the service via Ons

MainActivity is as follows: Package CC. testservice3; import android. OS. bundle; import android. app. activity; import android. content. intent; import android. view. view; import android. view. view. onclicklistener; import android