Methods of Service are as follows:<\/p>\n
- \n
- onStartCommand(): This method is called whenever another component such as an activity request get the service started.<\/li>\n
- onBind(): It is called when another component wants to bind with service by calling bindService().<\/li>\n
- onUnbind(): It is called when all clients have disconnected from a particular interface.<\/li>\n
- onRebind(): It is called when new clients have connected to the service after it had previously been notified that all had disconnected in its onUnbind() method.<\/li>\n
- onCreate(): It is called when Service is created for the first time.<\/li>\n
- onDestroy(): It is called whenever Service is no longer used and is being destroyed.<\/li>\n<\/ol>\n
The figure of Service Lifecycle is as follows:<\/p>\n
![](\"http:\/\/webartdevelopers.com\/wp-content\/uploads\/2017\/04\/service_lifecycle.png\")
<\/p>\nCode:<\/p>\n
strings.xml<\/p>\n
<?xml version=”1.0″ encoding=”utf-8″?>
\n<resources><\/p>\n<string name=”app_name”>Demo<\/string>
\n<string name=”action_settings”>Settings<\/string>
\n<string name=”h”>Program of Service<\/string>
\n<string name=”mes1″>Start Service<\/string>
\n<string name=”mes2″>Stop Service<\/string><\/p>\n<\/resources><\/p>\n
<\/p>\n
activity_main.xml<\/p>\n
<RelativeLayout xmlns:android=”http:\/\/schemas.android.com\/apk\/res\/android”
\nxmlns:tools=”http:\/\/schemas.android.com\/tools”
\nandroid:layout_width=”match_parent”
\nandroid:layout_height=”match_parent”
\nandroid:paddingBottom=”@dimen\/activity_vertical_margin”
\nandroid:paddingLeft=”@dimen\/activity_horizontal_margin”
\nandroid:paddingRight=”@dimen\/activity_horizontal_margin”
\nandroid:paddingTop=”@dimen\/activity_vertical_margin”
\ntools:context=”.MainActivity” ><\/p>\n<TextView
\nandroid:id=”@ id\/textView1″
\nandroid:layout_width=”wrap_content”
\nandroid:layout_height=”wrap_content”
\nandroid:layout_alignParentTop=”true”
\nandroid:layout_centerHorizontal=”true”
\nandroid:layout_marginTop=”82dp”
\nandroid:text=”@string\/h” \/><\/p>\n<Button
\nandroid:id=”@ id\/button1″
\nandroid:layout_width=”wrap_content”
\nandroid:layout_height=”wrap_content”
\nandroid:layout_below=”@ id\/textView1″
\nandroid:layout_marginTop=”117dp”
\nandroid:layout_toLeftOf=”@ id\/textView1″
\nandroid:onClick=”start”
\nandroid:text=”@string\/mes1″ \/><\/p>\n<Button
\nandroid:id=”@ id\/button2″
\nandroid:layout_width=”wrap_content”
\nandroid:layout_height=”wrap_content”
\nandroid:layout_alignBottom=”@ id\/button1″
\nandroid:layout_toRightOf=”@ id\/textView1″
\nandroid:onClick=”stop”
\nandroid:text=”@string\/mes2″ \/><\/p>\n<\/RelativeLayout><\/p>\n
<\/p>\n
MainActivity.java<\/p>\n
package com.example.demo;<\/p>\n
import android.os.Bundle;
\nimport android.app.Activity;
\nimport android.content.Intent;
\nimport android.util.Log;
\nimport android.view.Menu;
\nimport android.view.View;
\npublic class MainActivity extends Activity {<\/p>\n@Override
\nprotected void onCreate(Bundle savedInstanceState) {
\nsuper.onCreate(savedInstanceState);
\nsetContentView(R.layout.activity_main);
\nLog.d(“Service”,”onCreate() invoked”);
\n}<\/p>\n\/\/method to start service
\npublic void start(View v)
\n{
\nstartService(new Intent(getBaseContext(),Secondjava.class));
\n}<\/p>\n\/\/method to stop service
\npublic void stop(View v)
\n{
\nstopService(new Intent(getBaseContext(),Secondjava.class));
\n}<\/p>\n@Override
\npublic boolean onCreateOptionsMenu(Menu menu) {
\n\/\/ Inflate the menu; this adds items to the action bar if it is present.
\ngetMenuInflater().inflate(R.menu.main, menu);
\nreturn true;
\n}<\/p>\n}<\/p>\n
<\/p>\n
Secondjava.java<\/p>\n
package com.example.demo;<\/p>\n
import android.app.Service;
\nimport android.content.Intent;
\nimport android.os.IBinder;
\nimport android.widget.Toast;<\/p>\npublic class Secondjava extends Service{<\/p>\n
@Override
\npublic IBinder onBind(Intent arg0)
\n{
\nreturn null;
\n}<\/p>\n@Override
\npublic int onStartCommand(Intent intent,int flags,int startID)
\n{
\nToast.makeText(this, “Service Started”, Toast.LENGTH_LONG).show();
\nreturn START_STICKY;
\n}<\/p>\n@Override
\npublic void onDestroy()
\n{
\nsuper.onDestroy();
\nToast.makeText(this, “Service Stopped”, Toast.LENGTH_LONG).show();
\n}
\n}<\/p>\n<\/p>\n
AndroidManifest.xml<\/p>\n
<?xml version=”1.0″ encoding=”utf-8″?>
\n<manifest xmlns:android=”http:\/\/schemas.android.com\/apk\/res\/android”
\npackage=”com.example.demo”
\nandroid:versionCode=”1″
\nandroid:versionName=”1.0″ ><\/p>\n<uses-sdk
\nandroid:minSdkVersion=”8″
\nandroid:targetSdkVersion=”17″ \/><\/p>\n<application
\nandroid:allowBackup=”true”
\nandroid:icon=”@drawable\/ic_launcher”
\nandroid:label=”@string\/app_name”
\nandroid:theme=”@style\/AppTheme” >
\n<activity
\nandroid:name=”com.example.demo.MainActivity”
\nandroid:label=”@string\/app_name” >
\n<intent-filter>
\n<action android:name=”android.intent.action.MAIN” \/><\/p>\n<category android:name=”android.intent.category.LAUNCHER” \/>
\n<\/intent-filter>
\n<\/activity>
\n<service android:name=”.Secondjava”><\/service>
\n<\/application><\/p>\n<\/manifest><\/p>\n