我能够以编程方式断开呼叫在Android 2.2的来电数目不详的电话。但在Android的4.1，它不工作。

i am able to disconnect the call programmatically for incoming unknown number call in android 2.2. But in android 4.1, its not working.

工作code断开呼叫Android 2.2的：

private Class c;    
private  Method m;    
private com.android.internal.telephony.ITelephony telephonyService;    
public void onReceive(Context context, Intent intent)     
{    
   Bundle b = intent.getExtras();    
   String state = b.getString(TelephonyManager.EXTRA_STATE);    
   if(state.equalsIgnoreCase(TelephonyManager.EXTRA_STATE_RINGING))   
   {    
     TelephonyManager tm = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);    
     c = Class.forName(tm.getClass().getName());    
     m = c.getDeclaredMethod("getITelephony");    
     m.setAccessible(true);    
     telephonyService = (ITelephony) m.invoke(tm);    
     telephonyService.silenceRinger();   
     telephonyService.endCall();    
   }    
}

请帮忙me.Thanks提前

Please help me.Thanks in advance

最后我得到了2.6版本的解决方案。

MODIFY_PHONE_STATE 许可，不再从事silenceRinger（），因为2.3+，但按结束就好了。所以，解决的办法是注释掉调用silenceRinger（）。

MODIFY_PHONE_STATE permission is no longer working on silenceRinger() since 2.3+, but endCall is just fine. So the solution is to comment out the call to silenceRinger().

推荐答案

MODIFY_PHONE_STATE不再工作silenceRinger（），因为2.3+，但按结束就好了。

MODIFY_PHONE_STATE is no longer working on silenceRinger() since 2.3+, but endCall is just fine.

所以，解决的办法是注释掉调用silenceRinger（）。

So the solution is to comment out the call to silenceRinger().

和一个简单的例子：

 http://androidbridge.blogspot.ro/2011/05/how-to-answer-incoming-call-in-android.html

干杯