Service Demo Working code

MainActivity.java



import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;

public class MainActivity extends AppCompatActivity {
//String msg="android:";    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //Log.d(msg, "The onCreate() event");    }

    public void startService(View view) {
        startService(new Intent(getBaseContext(), Myservice.class));
    }

    // Method to stop the service    public void stopService(View view) {
        stopService(new Intent(getBaseContext(), Myservice.class));
    }

}

Myservice.java

public class Myservice extends Service {
    @Nullable    @Override    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override    public int onStartCommand(Intent intent, int flags, int startId) {
        // Let it continue running until it is stopped.        Toast.makeText(this, "Service Started", Toast.LENGTH_LONG).show();
        return START_STICKY;
    }

    @Override    public void onDestroy() {
        super.onDestroy();
        Toast.makeText(this, "Service Destroyed", Toast.LENGTH_LONG).show();
    }
}

Manifest.xml code ( adding service tag components )
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.admin.servicedemo">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        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=".Myservice" />

        <activity android:name=".abc"></activity>
    </application>

</manifest>







 Activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignStart="@+id/button2"
        android:layout_centerVertical="true"
        android:onClick="stopService"
        android:text="stop service"
        tools:layout_editor_absoluteX="96dp"
        tools:layout_editor_absoluteY="130dp" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginStart="111dp"
        android:layout_marginTop="104dp"
        android:onClick="startService"
        android:text="start service"
        tools:layout_editor_absoluteX="61dp"
        tools:layout_editor_absoluteY="293dp" />
</RelativeLayout