java - Android - Service does not start -


i making app me , class mates, checks new homeworks , exams. has service may not killed beacuse of checking school server (like every 5 minutes) changed size of file list of exams , stuff this. tried following code:

mayinactivity.java

package com.test.simpleservice;  import android.app.activitymanager; import android.support.v7.app.appcompatactivity; import android.os.bundle; import android.view.view; import android.widget.button;  import java.util.list;  public class mainactivity extends appcompatactivity { @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);   //checking runings services - remove later     activitymanager = (activitymanager)this.getsystemservice(activity_service);     list<activitymanager.runningserviceinfo> rs = am.getrunningservices(50);     string message = null;      (int i=0; i<rs.size(); i++) {         activitymanager.runningserviceinfo                 rsi = rs.get(i);         system.out.println("!!!!!!!!!!service" + "process " + rsi.process + " component " + rsi.service.getclassname());         message = message + rsi.process;     }       button btnstart = (button) findviewbyid(r.id.startbtn);     btnstart.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view v) {                  servicemanager.startservice(getapplicationcontext());              }         });      }  } 

myservices.java

package com.test.simpleservice;  import android.app.service; import android.content.intent; import android.os.ibinder; import android.support.annotation.nullable; import android.widget.toast;  public class myservices extends service {      private static final string logtag = "myservices";      @override     public void onstart(intent intent, int startid) {         system.out.println("start...");         //some code of service starting,such establish connection,create timertask or else         toast.maketext(this, "service start", toast.length_long).show();     }      @nullable     @override     public ibinder onbind(intent arg0) {         // todo auto-generated method stub         return null;     }      @override     public int onstartcommand(intent intent, int flags, int startid) {         //this start service         system.out.println("startcommand...");         toast.maketext(this, "service startcomand", toast.length_long).show();         return start_sticky;     }      @override     public void ondestroy() {         //this not kill service         //super.ondestroy();         toast.maketext(this, "task destroyed", toast.length_long).show();         intent in = new intent();         in.setaction("preventkilling");         sendbroadcast(in);     }      @override     public void ontaskremoved(intent intent){         toast.maketext(this, "task removed", toast.length_long).show();         intent = new intent(this, this.getclass());         startservice(intent);     }   } 

reciever.java

package com.test.simpleservice;  import android.content.broadcastreceiver; import android.content.context; import android.content.intent; import android.util.log;   public class receiver extends broadcastreceiver {     private static final string logtag = "receiver";     public void onreceive(context context, intent intent) {         if (intent.action_boot_completed.equals(intent.getaction())) {             intent serviceintent = new intent(context, myservices.class);             context.startservice(serviceintent);         }          log.d(logtag, "servicedestroy onreceive...");         log.d(logtag, "action:" + intent.getaction());         log.d(logtag, "servicedestroy auto start service...");         servicemanager.startservice(context);     }  } 

servicemanager

package com.test.simpleservice;  import android.content.context; import android.content.intent; import android.util.log;  public class servicemanager {     private static final string logtag = "servicemanager";      public static void startservice(context context) {         log.i(logtag, "servicemanager.startserivce()...");         intent intent = new intent(myservices.class.getname());         intent.setpackage("com.test.simpleservice");         context.startservice(intent);     }  } 

androidmanifest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.test.simpleservice">      <uses-permission android:name="android.permission.receive_boot_completed" />      <application         android:allowbackup="true"         android:icon="@mipmap/ic_launcher"         android:label="@string/app_name"         android:supportsrtl="true"         android:theme="@style/apptheme">         <activity android:name=".mainactivity">             <intent-filter>                 <action android:name="android.intent.action.main" />                  <category android:name="android.intent.category.launcher" />             </intent-filter>         </activity>         <service android:name=".myservices" />          <receiver android:name=".receiver" >             <intent-filter>                 <action android:name="preventkilling" />                 </intent-filter>              <intent-filter>                 <action android:name="android.intent.action.recieve_boot_completed" />                 <action android:name="android.intent.action.quickboot_poweron" />                 <category android:name="android.intent.category.default" />             </intent-filter>         </receiver>      </application>  </manifest> 

activity_main.xml

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:paddingbottom="@dimen/activity_vertical_margin"     android:paddingleft="@dimen/activity_horizontal_margin"     android:paddingright="@dimen/activity_horizontal_margin"     android:paddingtop="@dimen/activity_vertical_margin"     tools:context="com.test.simpleservice.mainactivity">      <button         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="@string/start_btn"         android:id="@+id/startbtn"         android:layout_alignparenttop="true"         android:layout_centerhorizontal="true" />  </relativelayout> 

when run app , click button "start", service wont start - no toasts, no logs, nothing in setting->apps->services. why? better way make unkillable process without anoying notification?

logcat last few lines becouse before listed services:

01-16 14:10:15.567 13753-13772/com.test.simpleservice i/openglrenderer: initialized egl, version 1.4 01-16 14:10:15.567 13753-13772/com.test.simpleservice w/openglrenderer: failed choose config egl_swap_behavior_preserved, retrying without... 01-16 14:10:15.587 13753-13772/com.test.simpleservice d/openglrenderer: enabling debug mode 0 01-16 14:10:17.597 13753-13753/com.test.simpleservice i/servicemanager: servicemanager.startserivce()... 

and 1 more question: app start after boot? if not, did wrong?

im sorry poor english

intent intent = new intent(context, myservices.class);         intent.setpackage("com.test.simpleservice");         context.startservice(intent); 

because context is:

 public static void startservice(context context) 

and here :

 public void onreceive(context context, intent intent) 

for above intent name -> intent


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