Android Self-study road--service and Intentservice

A) mainactivity part of the code
1  PackageCom.example.cms.intentservice;2 3 Importandroid.content.Intent;4 Importandroid.support.v7.app.AppCompatActivity;5 ImportAndroid.os.Bundle;6 ImportAndroid.view.View;7 ImportAndroid.widget.Button;8 9  Public classMainactivityextendsappcompatactivity {Ten     PrivateButton StartService; One     PrivateButton Startintentservice; A  - @Override -     protected voidonCreate (Bundle savedinstancestate) { the         Super. OnCreate (savedinstancestate); - Setcontentview (r.layout.activity_main); -Startservice=(Button) Findviewbyid (r.id.service); -Startintentservice=(Button) Findviewbyid (r.id.intentservice); +Startservice.setonclicklistener (NewView.onclicklistener () { - @Override +              Public voidOnClick (View v) { A StartService (); at             } -         }); -Startintentservice.setonclicklistener (NewView.onclicklistener () { - @Override -              Public voidOnClick (View v) { - Startintentservice (); in             } -         }); to     } +      Public voidStartService () { -Intent Intent =NewIntent ( This, MyService.class); the StartService (intent); *     } $      Public voidStartintentservice () {Panax NotoginsengIntent intent=NewIntent ( This, Myintentservice.class); - StartService (intent); the     } +}

B) MyService part of the code

1  PackageCom.example.cms.intentservice;2 3 ImportAndroid.app.Service;4 Importandroid.content.Intent;5 ImportAndroid.os.IBinder;6 Importandroid.support.annotation.Nullable;7 8 /**9 * Created by CMS on 2016/3/28.Ten  */ One  Public classMyServiceextendsService { A @Nullable - @Override -      Publicibinder onbind (Intent Intent) { the         return NULL; -     } -  - @Override +      Public intOnstartcommand (Intent Intent,intFlagsintStartid) { -         //use thread pauses to simulate time-consuming tasks pausing for 20 seconds +         //Normal service execution will block the main thread so executing this method will cause a ANR exception A         LongEndtime=system.currenttimemillis () +20*1000; atSystem.out.println ("OnStart"); -          while(System.currenttimemillis () <endTime) { -             synchronized( This){ -                 Try { -Wait (endtime-System.currenttimemillis ()); -}Catch(interruptedexception e) { in e.printstacktrace (); -                 } to             } +         } -SYSTEM.OUT.PRINTLN ("---time-consuming task execution complete----"); the         returnStart_sticky; *     } $}

C) Myintentservice part of the code

 PackageCom.example.cms.intentservice;ImportAndroid.app.IntentService;Importandroid.content.Intent;ImportAndroid.content.IntentSender;/*** Created by CMS on 2016/3/28.*/ Public classMyintentserviceextendsIntentservice { PublicMyintentservice () {Super("Myintentservice"); } @Overrideprotected voidonhandleintent (Intent Intent) {//Intentservice will use a separate thread to execute the code for this method//Does not block the main thread so there is no ABR exception        LongEndtime=system.currenttimemillis () +20*1000; System.out.println ("Onhandleintent");  while(System.currenttimemillis () <endTime) {            synchronized( This){                Try{Wait (endTime-System.currenttimemillis ()); } Catch(interruptedexception e) {e.printstacktrace (); }}} System.out.println ("Time-consuming task execution complete"); }}

Android Self-study road--service and Intentservice