Android：在unregisterReceiver（）上獲取java.lang.IllegalArgumentException（）

Question

我有一個應用程序，用戶可以在Settings中註冊和取消註冊接收器以啓用和禁用應用程序的服務。

我已經採取了切換按鈕讓該應用service.I登記在其上狀態接收機和註銷同一其關閉狀態的用戶控制。

當我通過在的狀態下開啓切換按鈕來啓用應用程序服務時，它正常工作，它成功註冊了接收器並給了我祝酒。

但是，當我嘗試再次點擊切換按鈕使其在關閉狀態時，它給我例外行unregisterReceiver（..）。

下面是代碼：

... 
    onoff.setOnClickListener(new OnClickListener() 
    {    
     @Override 
     public void onClick(View v) 
     { 
      BroadcastReceiver b=new SmsReactor(); 
      if(onoff.isChecked()) 
      { 
       try    
       {        
        IntentFilter iFilter=new IntentFilter("android.provider.Telephony.SMS_RECEIVED"); 
        iFilter.setPriority(100); 
        registerReceiver(b,iFilter); 

        Toast.makeText(context,"Service Started!",Toast.LENGTH_SHORT).show(); 
       } 
       catch (Exception e) { 

        onoff.setChecked(false); 
        Toast.makeText(context,"Sorry,Couldn't start the service!Try again.",Toast.LENGTH_SHORT).show(); 
        e.printStackTrace();     
       }     
      } 
      else 
      { 
       try 
       {       
        unregisterReceiver(b); // here it gives me exception     
        Toast.makeText(context,"Service Stopped!",Toast.LENGTH_SHORT).show(); 
       } 
       catch (Exception e){ 

        onoff.setChecked(true); 
        Toast.makeText(context,"Sorry,Couldn't stop the service!Try again.",Toast.LENGTH_SHORT).show(); 
        e.printStackTrace(); 
       }   
      } 
     } 
    }); 
    ... 

而且logcat的：

12-07 10:16:37.113: W/System.err(445): java.lang.IllegalArgumentException: Receiver not registered: com.xxx.android.xxx.SmsReactor@44e1c500 
12-07 10:16:37.113: W/System.err(445): at android.app.ActivityThread$PackageInfo.forgetReceiverDispatcher(ActivityThread.java:667) 
12-07 10:16:37.123: W/System.err(445): at android.app.ApplicationContext.unregisterReceiver(ApplicationContext.java:747) 
12-07 10:16:37.123: W/System.err(445): at android.content.ContextWrapper.unregisterReceiver(ContextWrapper.java:321) 
12-07 10:16:37.123: W/System.err(445): at com.xxx.android.xxx.Settings$2.onClick(Settings.java:90) 
12-07 10:16:37.123: W/System.err(445): at android.view.View.performClick(View.java:2364) 
12-07 10:16:37.123: W/System.err(445): at android.widget.CompoundButton.performClick(CompoundButton.java:98) 
12-07 10:16:37.123: W/System.err(445): at android.view.View.onTouchEvent(View.java:4179) 
12-07 10:16:37.123: W/System.err(445): at android.widget.TextView.onTouchEvent(TextView.java:6541) 
12-07 10:16:37.123: W/System.err(445): at android.view.View.dispatchTouchEvent(View.java:3709) 
12-07 10:16:37.123: W/System.err(445): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 
12-07 10:16:37.123: W/System.err(445): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 
12-07 10:16:37.123: W/System.err(445): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 
12-07 10:16:37.123: W/System.err(445): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 
12-07 10:16:37.123: W/System.err(445): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884) 
12-07 10:16:37.123: W/System.err(445): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659) 
12-07 10:16:37.123: W/System.err(445): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107) 
12-07 10:16:37.123: W/System.err(445): at android.app.Activity.dispatchTouchEvent(Activity.java:2061) 
12-07 10:16:37.123: W/System.err(445): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643) 
12-07 10:16:37.123: W/System.err(445): at android.view.ViewRoot.handleMessage(ViewRoot.java:1691) 
12-07 10:16:37.123: W/System.err(445): at android.os.Handler.dispatchMessage(Handler.java:99) 
12-07 10:16:37.133: W/System.err(445): at android.os.Looper.loop(Looper.java:123) 
12-07 10:16:37.133: W/System.err(445): at android.app.ActivityThread.main(ActivityThread.java:4363) 
12-07 10:16:37.133: W/System.err(445): at java.lang.reflect.Method.invokeNative(Native Method) 
12-07 10:16:37.133: W/System.err(445): at java.lang.reflect.Method.invoke(Method.java:521) 
12-07 10:16:37.133: W/System.err(445): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 
12-07 10:16:37.133: W/System.err(445): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
12-07 10:16:37.133: W/System.err(445): at dalvik.system.NativeStart.main(Native Method) 

請幫我找出我在哪裏做錯了？任何幫助讚賞。

在此先感謝！

Answer 1

只要定義這個BroadcastReceiver b=new SmsReactor(); 外按鈕的Click像，OnCreate()再試一次讓我知道發生什麼事，