Run 을 통해 APP 에서 출력 확인

 

class MainActivity

package org.androidtown.myservice;

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

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }


    public void onButton1Click(View v){
        Intent intent =new Intent(getApplicationContext(), MyService.class);
        intent.putExtra("command", "start");
        //startActivity(); 가 아니라 서비스
        startService(intent);

    }



}

 

 

R.layout.activity_main

 

<?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:id="@+id/activity_main"
    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="org.androidtown.myservice.MainActivity">


    <Button
        android:text="서비스시작"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="119dp"
        android:layout_marginStart="119dp"
        android:layout_marginTop="104dp"
        android:id="@+id/button"
        android:onClick="onButton1Click"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />


</RelativeLayout>

 

class MyService

package org.androidtown.myservice;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;

public class MyService extends Service {

    private static final String TAG ="MyService";

    public MyService() {

    }

    @Override
    public void onCreate() {
        Log.d(TAG, "onCreate() 호출됨.");
        super.onCreate();
    }


    @Override
    public void onDestroy() {
        Log.d(TAG, "onDestroy() 호출됨.");
        super.onDestroy();
    }


    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d(TAG, "onStartCommand() 호출됨");

        if(intent!=null){
            String command =intent.getStringExtra("command");
            if(command!=null){
                if(command.equals("start")){
                    PrintThread thread =new PrintThread();
                    thread.start();
                }
            }
        }
        return super.onStartCommand(intent, flags, startId);
    }

    class PrintThread extends Thread{

        @Override
        public void run() {
            for(int i=0; i<100; i++){
                Log.d(TAG, "#"+i+"서비스가 반복됨");

                try {
                    Thread.sleep(500);
                }catch(Exception e){
                    e.printStackTrace();
                }
            }
        }
    }



    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        throw new UnsupportedOperationException("Not yet implemented");
    }



}

 

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.androidtown.myservice">

    <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=".MyService"
            android:enabled="true"
            android:exported="true"></service>
    </application>

</manifest>

 

 

 

 

 

 

 

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