Android Service 启动和停止服务

activity_main.xml

　　定义两个Button控件，start_service和stop_service。

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:showIn="@layout/activity_main"
    tools:context=".MainActivity">

   <Button
       android:id="@+id/start_service"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:text="Start Service"/>

    <Button
        android:id="@+id/stop_service"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Stop Service"/>
</LinearLayout>

MainActivity.java

　　同样定义两个Button控件start_service和stop_service，并设置监听器，然后用Intent对象进行通信。

package jiangbin.servicetest;

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

public class MainActivity extends Activity implements View.OnClickListener{

    private Button startService;
    private Button stopService;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        startService = (Button) findViewById(R.id.start_service);
        stopService = (Button) findViewById(R.id.stop_service);
        startService.setOnClickListener(this);
        stopService.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.start_service:
                Intent startIntent = new Intent(this, MyService.class);
                startService(startIntent);
                break;
            case R.id.stop_service:
                Intent stopIntent = new Intent(this, MyService.class);
                stopService(stopIntent);
            default:
                break;
        }
    }
}

MyService.java

　　定义Myservice类

　　　　onCreate()在服务创建时候调用；

　　　　onStartCommand()在服务创建的时候调用；

　　　　onDestory()在服务销毁的时候调用。

package jiangbin.servicetest;

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

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

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

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d("Myservice", "onStart");
        return super.onStartCommand(intent, flags, startId);

    }

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