帶有aidl文件的遠程服務：ServiceConnection從未呼叫

Question

我想通過一個帶有aidl文件的服務綁定2個應用程序。

在我的應用程序（與將要訪問的服務）：

→AIDL文件（BillingInterface.aidl）：

package com.A.service; 
import android.os.Bundle; 

interface BillingInterface { 
    Bundle getServiceDetails(String a, String b); 
} 

的Java接口不煩惱自動創建。

然後，將被遠程處理我的服務：

public class BillingService extends Service { 

    private static final String TAG = BillingService.class.getName(); 

    @Override 
    public void onCreate() { 
     super.onCreate(); 
    } 

    @Override 
    public void onDestroy() { 
     super.onDestroy(); 
    } 

    @Override 
    public IBinder onBind(Intent arg0) { 

     return new BillingInterface.Stub() {  

      @Override 
      public Bundle getServiceDetails(String a, String b) 
       throws RemoteException { 

       Bundle b = new Bundle(); 
       b.putString("test", "simple test"); 
       return b; 
      }; 
     } 
    } 

} 

在我的清單文件：

<service 
     android:name=".service.BillingService" 
     android:enabled="true" 
     android:exported="true" 
     android:process=":remote" 

     <intent-filter> 
      <action android:name=".service.BillingInterface.aidl" /> 
     </intent-filter> 
/> 

在我的應用程序B，我嘗試連接到它（我有同樣的AIDL文件）：

protected void onCreate(Bundle savedInstanceState) { 
... 

    Intent i = new Intent(); 
    i.setClassName("com.A", "com.A.service.BillingService"); 

    try { 

    Boolean ret = bindService(i, mConnection , Context.BIND_DEBUG_UNBIND); 
    Log.d("DEBUG", ret.toString()); // will return "true" 

    } catch (Exception e) { 
    Log.e("DEBUG", "not able to bind ! "); 
    } 


... 


private ServiceConnection mConnection = new ServiceConnection(){ 


    public void onServiceConnected(ComponentName name, IBinder boundService) { 
     service = BillingInterface.Stub.asInterface((IBinder) boundService); 
     Log.d("DEBUG", "onServiceConnected() : OK "); 
    } 

     public void onServiceDisconnected(ComponentName name) { 
      service = null; 
     } 
    }; 



    //When clicking button : 

    public void onclick(View v) { 

     try { 

      // serviceのcheckTransfertメッソードを呼ぶ 
      Bundle response = service.getServiceDetails("test", "test"); 

      Log.d("DEBUG", response.getString("test")); 

     } catch (RemoteException e) { 

      Log.e("DEBUG", "error in RemoteExpcetion" + e.getMessage()); 
     } 

    } 

當綁定到服務（bindService）時，我得到一個布爾值「true」，但方法onServiceConnected in m y serviceConnection永遠不會被調用。我已經設置了一個按鈕來調用服務的方法（參見上面的方法「onclick」）。如果我點擊，我會得到以下消息：

03-11 02:00:32.895: E/AndroidRuntime(3066): FATAL EXCEPTION: main 
03-11 02:00:32.895: E/AndroidRuntime(3066): java.lang.IllegalStateException: Could not execute method of the activity 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at android.view.View$1.onClick(View.java:2072) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at android.view.View.performClick(View.java:2408) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at android.view.View$PerformClick.run(View.java:8816) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at android.os.Handler.handleCallback(Handler.java:587) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at android.os.Handler.dispatchMessage(Handler.java:92) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at android.os.Looper.loop(Looper.java:123) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at android.app.ActivityThread.main(ActivityThread.java:4627) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at java.lang.reflect.Method.invoke(Method.java:521) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at dalvik.system.NativeStart.main(Native Method) 
03-11 02:00:32.895: E/AndroidRuntime(3066): Caused by: java.lang.reflect.InvocationTargetException 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at com.example.testconnection/xxxx.MainActivity.onclick(MainActivity.java:59) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at java.lang.reflect.Method.invoke(Method.java:521) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  at android.view.View$1.onClick(View.java:2067) 
03-11 02:00:32.895: E/AndroidRuntime(3066):  ... 11 more 
03-11 02:00:32.895: E/AndroidRuntime(3066): Caused by: java.lang.NullPointerException 
03-11 02:00:32.895: E/AndroidRuntime(3066):  ... 15 more 

任何想法？ 謝謝您的閱讀！

Answer 1

變化

Boolean ret = bindService(i, mConnection , Context.BIND_DEBUG_UNBIND); 

到：

Boolean ret = bindService(i, mConnection , Context.BIND_AUTO_CREATE); 

然後onServiceConnected將被調用。