进程间通信---AIDL的使用实例

向右看齐 2022-08-13 15:55 199阅读 0赞

**aidl文件**

1.  **package** com.tang.remoteservicedemo;  
2.  **interface** IRemoteService \{  
3.   String getInfo();  
4.  \}

**实现**

**package com.tang.remoteservicedemo;  
  
  
import java.util.Date;  
  
  
import android.app.Service;  
import android.content.Intent;  
import android.os.IBinder;  
import android.os.RemoteException;  
  
  
public class IService extends Service  
\{  
private IBinder iBinder = new IRemoteService.Stub() \{  
@Override  
public String getInfo() throws RemoteException \{  
// TODO Auto-generated method stub  
return new Date(System.currentTimeMillis()).toLocaleString()+"  来自远程服务的信息！";  
\}  
\};  
@Override  
public IBinder onBind(Intent intent) \{  
// TODO Auto-generated method stub  
return iBinder;  
\}  
\}**

**应用实现**

1.  <service android:name="com.tang.remoteservicedemo.IService"  
2.      android:process=":remote">  
3.      <intent-filter>  
4.          <action android:name="com.tang.remoteservicedemo.IService"/>  
5.      </intent-filter>  
6.  </service>

**实现：**

1.  **package** com.tang.clientdemo;  
2.    
3.  **import** java.util.Timer;  
4.  **import** java.util.TimerTask;  
5.    
6.  **import** com.tang.remoteservicedemo.IRemoteService;  
7.    
8.  **import** android.app.Activity;  
9.  **import** android.content.ComponentName;  
10. **import** android.content.Context;  
11. **import** android.content.Intent;  
12. **import** android.content.ServiceConnection;  
13. **import** android.os.Bundle;  
14. **import** android.os.IBinder;  
15. **import** android.os.RemoteException;  
16. **import** android.util.Log;  
17.   
18.   
19. **public** **class** MainActivity **extends** Activity \{  
20.   
21.     **private** IRemoteService iService = **null**;  
22.     **private** **boolean** isBinded =**false**;  
23.       
24.     ServiceConnection conn = **new** ServiceConnection() \{  
25.           
26.         @Override  
27.         **public** **void** onServiceDisconnected(ComponentName name) \{  
28.             // TODO Auto-generated method stub  
29.             isBinded = **false**;  
30.             iService = **null**;  
31.         \}  
32.           
33.         @Override  
34.         **public** **void** onServiceConnected(ComponentName name, IBinder service) \{  
35.             // TODO Auto-generated method stub  
36.             iService = IRemoteService.Stub.asInterface(service);  
37.             isBinded = **true**;  
38.         \}  
39.     \};  
40.       
41.     **public** **void** doBind()   
42.     \{  
43.         Intent intent = **new** Intent("com.tang.remoteservicedemo.IService");  
44.         bindService(intent, conn, Context.BIND\_AUTO\_CREATE);  
45.     \}  
46.       
47.     **public** **void** doUnbind()   
48.     \{  
49.         **if** (isBinded)   
50.         \{  
51.           unbindService(conn);  
52.           iService = **null**;  
53.           isBinded = **false**;  
54.         \}  
55.     \}  
56.     @Override  
57.     **protected** **void** onCreate(Bundle savedInstanceState) \{  
58.         **super**.onCreate(savedInstanceState);  
59.         setContentView(R.layout.activity\_main);  
60.         **new** Thread(**new** Runnable() \{       
61.             @Override  
62.             **public** **void** run() \{  
63.                 // TODO Auto-generated method stub  
64.                 doBind();  
65.             \}  
66.         \}).start();  
67.         Timer timer = **new** Timer();  
68.         timer.schedule(task, 0, 2000);  
69.           
70.     \}  
71.     TimerTask task = **new** TimerTask() \{  
72.         @Override  
73.         **public** **void** run() \{  
74.             // TODO Auto-generated method stub  
75.             **if**(iService!=**null**)  
76.             \{  
77.                 **try** \{  
78.                     Log.i("AAA", iService.getInfo());  
79.                 \} **catch** (RemoteException e) \{  
80.                     // TODO Auto-generated catch block  
81.                     e.printStackTrace();  
82.                 \}  
83.             \}  
84.             **else**  
85.             \{  
86.                 Log.i("AAA", "iService!=null");  
87.             \}  
88.               
89.         \}  
90.     \};  
91.   
92.     @Override  
93.     **protected** **void** onDestroy() \{  
94.         // TODO Auto-generated method stub  
95.         doUnbind();  
96.         task.cancel();  
97.         **super**.onDestroy();  
98.     \}  
99. \}