Service服务进程间通讯&Parcelable传递复杂数据

又是固定的模式，熟能生巧

service服务器端

Person.java 实现 Parcelable接口

package com.example.remoteparceservive;import android.os.Parcel;import android.os.Parcelable;public class Person implements Parcelable {private int age;private String name;//标配的实现接口    public static final Parcelable.Creator<Person> CREATOR = new Parcelable.Creator<Person>() {        public Person createFromParcel(Parcel in) {            return new Person(in);        }        public Person[] newArray(int size) {            return new Person[size];        }    };    public Person(){        }    private Person(Parcel in){    readFromParcel(in);    }@Overridepublic int describeContents() {// TODO Auto-generated method stubreturn 0;}@Overridepublic void writeToParcel(Parcel arg0, int arg1) {//写的顺序必须跟读的顺序一致// TODO Auto-generated method stubarg0.writeInt(age);arg0.writeString(name);}public void readFromParcel(Parcel in){age = in.readInt();name = in.readString();}    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }}

对应的Persion.aidl，因为我们定义了Person.java,所以gen目录下不会再生成

package com.example.remoteparceservive;parcelable Person;

IStockQuoteService.aidl 要使用Person类型，实现传递复杂数据

//in 表示值由客户端设置，out表示值由服务设置，inout表示客户端服务端都设置了该值

package com.example.remoteparceservive;import com.example.remoteparceservive.Person;interface IStockQuoteService{String getQuote(in String ticker,in Person requester);}

实现服务器端StockQuoteService2.java

package com.example.remoteparceservive;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.app.Service;import android.content.Intent;import android.os.IBinder;import android.os.RemoteException;public class StockQuoteService2 extends Service {private NotificationManager notificationMgr;private int mNotificationId;//实现 aidl中方法public class StockQuoteServiceImpl extends IStockQuoteService.Stub{@Overridepublic String getQuote(String ticker, Person requester)throws RemoteException {// TODO Auto-generated method stubreturn requester.getName()+ticker;}}    @Override    public void onCreate() {        super.onCreate();        notificationMgr =                (NotificationManager)getSystemService(NOTIFICATION_SERVICE);        displayNotificationMessage("onCreate() called in StockQuoteService2");    }    @Override    public void onDestroy()    {        displayNotificationMessage("onDestroy() called in StockQuoteService2");        // Clear all notifications from this service        notificationMgr.cancelAll();        super.onDestroy();    }    public int onStartCommand(Intent intent, int flags, int startId) {        return super.onStartCommand(intent, flags, startId);    }    @Override    public IBinder onBind(Intent intent)    {        displayNotificationMessage("onBind() called in StockQuoteService2");        return new StockQuoteServiceImpl(); //返回AIDL对象    }    private void displayNotificationMessage(String message)    {        Notification notification = new Notification(R.drawable.ic_launcher, message,System.currentTimeMillis());        PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, MainActivity.class), 0);        notification.setLatestEventInfo(this, "StockQuoteService2",message, contentIntent);        notification.flags = Notification.FLAG_NO_CLEAR;        notificationMgr.notify(mNotificationId, notification);    }}

最后就是在AndroidManifest.xml中声明服务，注意与本地service声明不同。

        <service android:name="StockQuoteService2">            <intent-filter >                <action android:name="com.example.remoteparceservive.IStockQuoteService"/>            </intent-filter>        </service>

客户端,从新建个应用

连同包路径拷贝Person.java,Person.aidl,IStockQuoteService.aidl到客户端应用的目录下，以便客户端可以找到调用里面的函数

MainActivity.java

package com.example.remoteparceclient;import android.app.Activity;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.os.RemoteException;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;import com.example.remoteparceservive.*;public class MainActivity extends Activity {private IStockQuoteService stockService = null;private Button bindBtn;private Button callBtn;private Button unbindBtn;/** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        bindBtn = (Button)findViewById(R.id.bindBtn);        bindBtn.setOnClickListener(new OnClickListener(){            @Override            public void onClick(View view) {                 bindService(new Intent(IStockQuoteService.class                         .getName()),                            serConn, Context.BIND_AUTO_CREATE);                 bindBtn.setEnabled(false);                 callBtn.setEnabled(true);                 unbindBtn.setEnabled(true);            }});        callBtn = (Button)findViewById(R.id.callBtn);        callBtn.setOnClickListener(new OnClickListener(){            @Override            public void onClick(View view) {                callService();            }});        callBtn.setEnabled(false);                unbindBtn = (Button)findViewById(R.id.unbindBtn);        unbindBtn.setOnClickListener(new OnClickListener(){            @Override            public void onClick(View view) {                unbindService(serConn);                bindBtn.setEnabled(true);                callBtn.setEnabled(false);                unbindBtn.setEnabled(false);            }});        unbindBtn.setEnabled(false);    }    private void callService() {        try {        Person person = new Person();        person.setAge(47);        person.setName("Dave");            String response = stockService.getQuote("SYH", person);            Toast.makeText(MainActivity.this, "Value from service is "+response, Toast.LENGTH_SHORT).show();        } catch (RemoteException ee) {        }    }    private ServiceConnection serConn = new ServiceConnection() {        @Override        public void onServiceConnected(ComponentName name, IBinder service)        {            stockService = IStockQuoteService.Stub.asInterface(service);            callService();        }        @Override        public void onServiceDisconnected(ComponentName name) {        stockService = null;        }    };}

XML布局文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    ><Button  android:id="@+id/bindBtn"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="Bind"    />    <Button android:id="@+id/callBtn"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="Call Again"    />    <Button android:id="@+id/unbindBtn"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="UnBind"    /></LinearLayout>