andorid service 本地服务

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.hanqi.testservice">

    <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=".TestService1"

            android:enabled="true"

            android:exported="true"></service>

    </application>

</manifest>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    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="com.hanqi.testservice.MainActivity"

    android:orientation="vertical">

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content">

        <Button

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="一般启动服务"

            android:onClick="bt1_onclick"/>

        <Button

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="一般停止服务"

            android:onClick="bt2_onclick"/>

    </LinearLayout>

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content">

        <Button

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="绑定启动服务"

            android:onClick="bt3_onclick"/>

        <Button

            android:layout_width="0dp"

            android:layout_height="wrap_content"

            android:layout_weight="1"

            android:text="解绑停止服务"

            android:onClick="bt4_onclick"/>

    </LinearLayout>

</LinearLayout>

package com.hanqi.testservice;

import android.app.Service;

import android.content.Intent;

import android.os.Binder;

import android.os.IBinder;

import android.util.Log;

public class TestService1 extends Service {

    public TestService1() {

        Log.e("TAG","构造Service");

    }

    //绑定的回调方法

    //必须要重写

    @Override

    public IBinder onBind(Intent intent) {

        // TODO: Return the communication channel to the service.

        //throw new UnsupportedOperationException("Not yet implemented");

        Log.e("TAG","绑定被调用");

        return new Binder();

    }

    @Override

    public void onCreate() {

        Log.e("TAG","创建Service");

        super.onCreate();

    }

    @Override

    public void onDestroy() {

        Log.e("TAG","销毁Service");

        super.onDestroy();

    }

    @Override

    public int onStartCommand(Intent intent, int flags, int startId) {

        Log.e("TAG","启动命令");

        return super.onStartCommand(intent, flags, startId);

    }

    @Override

    public boolean onUnbind(Intent intent) {

        Log.e("TAG","解除绑定");

        return super.onUnbind(intent);

    }

}

package com.hanqi.testservice;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

import android.content.ServiceConnection;

import android.os.Bundle;

import android.os.IBinder;

import android.support.v7.app.AppCompatActivity;

import android.util.Log;

import android.view.View;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

    }

    //一般方式启动Service

    //参考Activity的启动方式

    public void bt1_onclick(View v)

    {

        //通过意图Intent启动

        //显示意图

        Intent intent = new Intent(this,TestService1.class);

        startService(intent);

        Toast.makeText(MainActivity.this, "启动Service", Toast.LENGTH_SHORT).show();

    }

    //一般方式停止Service

    //参考Activity的启动方式

    public void bt2_onclick(View v)

    {

        //通过意图Intent启动

        //显示意图

        Intent intent = new Intent(this,TestService1.class);

        stopService(intent);

        Toast.makeText(MainActivity.this, "停止Service", Toast.LENGTH_SHORT).show();

    }

    ServiceConnection serviceConnection;

    public void bt3_onclick(View v)

    {

        //通过意图Intent启动

        //显示意图

        Intent intent = new Intent(this,TestService1.class);

        if(serviceConnection == null) {

            serviceConnection = new ServiceConnection() {

                @Override

                public void onServiceConnected(ComponentName name, IBinder service) {

                    Log.e("TAG", "连接服务");

                }

                @Override

                public void onServiceDisconnected(ComponentName name) {

                    Log.e("TAG", "断开链接服务");

                }

            };

        }

        //参数: 意图，连接，绑定方式   BIND_AUTO_CREATE(自动创建)

        bindService(intent,serviceConnection, Context.BIND_AUTO_CREATE);

        Toast.makeText(MainActivity.this, "绑定服务成功", Toast.LENGTH_SHORT).show();

    }

    public void bt4_onclick(View v)

    {

        //判断是否已经绑定，连接是否为空

        if(serviceConnection != null)

        {

            //解除绑定

            unbindService(serviceConnection);

            serviceConnection = null;

            Toast.makeText(MainActivity.this, "解除绑定", Toast.LENGTH_SHORT).show();

        }

        else {

            Toast.makeText(MainActivity.this, "尚未绑定", Toast.LENGTH_SHORT).show();

        }

    }

    //  Acticity销毁的回调方法

    @Override

    protected void onDestroy() {

        if(serviceConnection != null) {

            //解除绑定

            unbindService(serviceConnection);

            serviceConnection = null;

        }

        super.onDestroy();

    }

}