1 生命周期图

2 第一种 非绑定方式 startService

2.1 自定义 Service

package com.demoservice;

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

public class FirstService extends Service {
    MediaPlayer mplayer;
    Binder binder = new Binder();

    @Override
    public IBinder onBind(Intent intent) {
        // TODO 自动生成的方法存根
        return binder;
    }

    @Override
    public void onCreate() {
        // TODO 自动生成的方法存根
        super.onCreate();
        mplayer = MediaPlayer.create(this, R.raw.music12);
        Log.i("demo", "onCreate");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        // TODO 自动生成的方法存根
        Log.i("demo", "onStartCommand");
        mplayer.start();
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        // TODO 自动生成的方法存根
        Log.i("demo", "onDestroy");
        mplayer.stop();
        super.onDestroy();
    }
}

2.2 注册 Service

<service android:name="com.demoservice.FirstService">
    <intent-filter>
        <action android:name="michael.FIRSTSERVICE" />
    </intent-filter>
</service>

2.3 开启/关闭 Service

package com.demoservice;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {
    Button btn_start, btn_stop;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn_start = (Button) findViewById(R.id.btn_start);
        btn_stop = (Button) findViewById(R.id.btn_stop);

        final Intent intent = new Intent();
        intent.setAction("michael.FIRSTSERVICE");

        OnClickListener listener = new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO 自动生成的方法存根
                if (v == btn_start) {
                    startService(intent);
                } else if (v == btn_stop) {
                    stopService(intent);
                }
            }
        };
        btn_start.setOnClickListener(listener);
        btn_stop.setOnClickListener(listener);
    }
}

3 第二种 绑定方式 bindService

3.1 自定义 Service

package com.SecondService;

import com.demoservice.R;
import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;

public class SecondService extends Service {
    int count;
    boolean quit = false;
    MediaPlayer mplayer;
    MyBinder binder = new MyBinder();

    @Override
    public IBinder onBind(Intent intent) {
        // TODO 自动生成的方法存根
        Log.i("demo", "onBind");
        mplayer.start();

        new Thread() {
            @Override
            public void run() {
                while (!quit) {
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    count++;
                    Log.i("demo", String.valueOf(count));
                }
            }
        }.start();
        return binder;
    }

    @Override
    public boolean onUnbind(Intent intent) {
        Log.i("demo", "onUnbind");
        quit = true;
        return super.onUnbind(intent);
    }

    @Override
    public void onRebind(Intent intent) {
        Log.i("demo", "onRebind");
        mplayer.start();
        super.onRebind(intent);
    }

    @Override
    public void onCreate() {
        super.onCreate();
        quit = false;
        mplayer = MediaPlayer.create(this, R.raw.music12);
        Log.i("demo", "onCreate");
    }

    @Override
    public void onDestroy() {
        Log.i("demo", "onDestroy");
        mplayer.stop();
        quit = true;
        super.onDestroy();
    }

    class MyBinder extends Binder {
        public SecondService getService() {
            return SecondService.this;
        }

        public int getCount() {
            return count;
        }
    }
}

3.2 注册 Service

<service android:name="com.SecondService.SecondService">
    <intent-filter>
        <action android:name="michael.SECONDSERVICE" />
    </intent-filter>
</service>

3.3 绑定/解绑 Service

package com.SecondService;

import com.demoservice.R;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {
    SecondService mservice;
    ServiceConnection conn = new ServiceConnection() {

        @Override
        public void onServiceDisconnected(ComponentName name) {
            // TODO 自动生成的方法存根
            Log.i("demo", "onServiceDisconnected");
            mservice = null;
        }

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            // TODO 自动生成的方法存根
            Log.i("demo", "onServiceConnecteds");
            mservice = ((SecondService.MyBinder) service).getService();
        }
    };

    Button btn_start, btn_stop, btn_get;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn_start = (Button) findViewById(R.id.btn_start);
        btn_get = (Button) findViewById(R.id.btn_get);
        btn_stop = (Button) findViewById(R.id.btn_stop);
        final Intent intent = new Intent();
        intent.setAction("michael.SECONDSERVICE");

        OnClickListener listener = new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO 自动生成的方法存根
                if (v == btn_start) {
                    bindService(intent, conn, BIND_AUTO_CREATE);
                } else if (v == btn_stop) {
                    unbindService(conn);
                } else if (v == btn_get) {
                    btn_get.setText(String.valueOf(mservice.binder.getCount()));
                }
            }
        };
        btn_start.setOnClickListener(listener);
        btn_stop.setOnClickListener(listener);
        btn_get.setOnClickListener(listener);
    }
}