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android Service Activity交互之传递复杂数据类型的远程服务

时间:2015-09-02 18:37:33      阅读:216      评论:0      收藏:0      [点我收藏+]

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远程服务往往不只是传递java基本数据类型。这时需要注意android的一些限制和规定:

  1. android支持String和CharSequence 
  2. 如果需要在aidl中使用其他aidl接口类型,需要import,即使是在相同包结构下; 
  3. android允许传递实现Parcelable接口的类,需要import; 
  4. android支持集合接口类型List和Map,但是有一些限制,元素必须是基本型或者上述三种情况,不需要import集合接口类,但是需要对元素涉及到的类型import; 
  5. 非基本数据类型,也不是String和CharSequence类型的,需要有方向指示,包括in、out和inout,in表示由客户端设置,out表示由服务端设置,inout是两者均可设置。

举例

 1 package com.mooger.message;
 2 
 3 import android.os.Parcel;
 4 import android.os.Parcelable;
 5 
 6 public class SkyMessage implements Parcelable  { 
 7     public String floder;
 8     public int aid;
 9     public long delay;
10     public String head;
11     public String body;
12     public String foot;
13     
14     public SkyMessage(String floder ,int aid ,long delay ,String head ,String body ,String foot)
15     {
16         this.floder = floder;
17         this.aid = aid;
18         this.delay = delay;
19         this.head = head;
20         this.body = body;
21         this.foot = foot;
22     }
23     
24     @Override  
25     public int describeContents() {  
26         return 0;  
27     }  
28     
29     @Override  
30     public void writeToParcel(Parcel dest, int flags) {  
31         dest.writeString(floder);
32         dest.writeInt(aid);
33         dest.writeLong(delay);
34         dest.writeString(head);
35         dest.writeString(body);
36         dest.writeString(foot);
37     }  
38 
39     public static final Parcelable.Creator<SkyMessage> CREATOR = new Parcelable.Creator<SkyMessage>(){  
40         @Override  
41         public SkyMessage createFromParcel(Parcel source) {
42             return new SkyMessage(source.readString() ,source.readInt() ,source.readInt() ,source.readString() ,source.readString() ,source.readString());  
43         }  
44         
45         @Override  
46         public SkyMessage[] newArray(int size) {  
47             return new SkyMessage[size];  
48         }  
49     };
50 
51 }

然后,需要在相同包下建一个同名的aidl文件,用于android生成相应的辅助文件:

1 package com.mooger.message;
2 
3 parcelable SkyMessage;

下面是两个aidl文件

SkyActivity.aidl

1 package com.mooger.aidl;
2 
3 interface SkyActivity{
4     void downloadstate(String TAG ,int AID);
5 }

SkyService.aidl

 1 package com.mooger.aidl;
 2 
 3 import com.mooger.aidl.SkyActivity;
 4 import com.mooger.message.SkyMessage;
 5 
 6 interface SkyService{
 7     void download(String download_url ,String Appname ,int download_size ,int AID ,String floder);
 8     void request(int time);
 9     void registerSkyCall(SkyActivity at);
10     void creatAd(in SkyMessage message);
11 }

在自己service类里实现一个内部类继承SkyService并实现相应的方法

 1     public class ServiceBinder extends SkyService.Stub{
 2 
 3         @Override
 4         public void download(String download_url, String Appname,
 5                 int download_size, int AID ,String floder) throws RemoteException {
 6             // TODO Auto-generated method stub
 7             .....
 8         }
 9 
10         @Override
11         public void registerSkyCall(SkyActivity at) throws RemoteException {
12             // TODO Auto-generated method stub
13             ......
14         }
15 
16         @Override
17         public void request(int time) throws RemoteException {
18             // TODO Auto-generated method stub
19             .......
20         }
21 
22         @Override
23         public void creatAd(SkyMessage message) throws RemoteException {
24             // TODO Auto-generated method stub
25             .........
26         }    
27     }

创建 ServiceBinder 实例

1 private ServiceBinder serviceBinder = new ServiceBinder();

并在onBind方法中返回实例

1 @Override
2 public IBinder onBind(Intent intent) {
3       Log.d(TAG, "Service onBind");
4         return serviceBinder;
5     }

在activity中实例化一个ServiceConnection对象并实现相应方法

 1     private SkyService downloadService;
 2     
 3     private ServiceConnection serviceConnection = new ServiceConnection(){
 4 
 5         @Override
 6         public void onServiceConnected(ComponentName name, IBinder service) {
 7             // TODO Auto-generated method stub
 8             Log.d("BootStart","activity onServiceConnected");
 9             downloadService = SkyService.Stub.asInterface(service);
10             try {
11                 downloadService.registerSkyCall(AtCallback);
12             } catch (RemoteException e) {
13                 // TODO Auto-generated catch block
14                 e.printStackTrace();
15             }
16         }
17 
18         @Override
19         public void onServiceDisconnected(ComponentName name) {
20             // TODO Auto-generated method stub
21             downloadService = null;
22         }
23         
24     };

最后通过bindService方法实现绑定

1 this.bindService(new Intent("com.mooger.aidl.Service"), this.serviceConnection, BIND_AUTO_CREATE);//绑定到服务

AndroidManifest.xml 中的service设置

1 <service android:name="com.mooger.service_133.MooService"         android:label="@string/service_name"
2 android:icon="@drawable/ic_launcher">
3        <intent-filter>
4         <action android:name="com.mooger.aidl.Service" /> 
5     </intent-filter>            
6 </service>

这样就完成了基本的设置和部署,通信传递数据只要向下面的例子代码即可

1 SkyMessage message = new SkyMessage(folder, jsonObj.optInt("aid"), jsonObj.optLong("delay"), jsonObj.optString("head"), jsonObj.optString("body"), jsonObj.optString("foot"));
2 try {    
3         downloadService.creatAd(message);                                  
4 } catch (RemoteException e) {
5     // TODO Auto-generated catch block
6     e.printStackTrace();
7 }

 

android Service Activity交互之传递复杂数据类型的远程服务

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原文地址:http://www.cnblogs.com/AndyZhengLL/p/4779026.html

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