挂断电话

各种来电防火墙之类的功能都可以过滤掉黑名单中的来电, 原理是响铃是判断来电号码是否存在于黑名单中, 如果存在则将其挂断.

挂断一个电话在API-10和之前版本中直接调用TelephonyManager对象的endCall方法即可, 但是之后的版本中这个API不再被公开(升级后的Android系统中还存在, 但是在Android SDK中不再提供给开发者* ). 

还想忤逆股沟的意思来调用它的话,  用反射. (有两种方法): 

 package com.example.hanguptest;

 import java.lang.reflect.Method;

 import android.app.Activity;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.telephony.TelephonyManager;
 import android.view.View;
 import android.widget.Toast;

 import com.android.internal.telephony.ITelephony;


 public class MainActivity extends Activity {

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
     }

     public void hangUp1(View v) throws Exception{
         Toast.makeText(getApplicationContext(), "hangUp1", 0).show();

         TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);

         Class tmClazz = tm.getClass();

         Method getITelephonyMethod = tmClazz.getDeclaredMethod("getITelephony", null);
         getITelephonyMethod.setAccessible(true);

         ITelephony iTelephony = (ITelephony) getITelephonyMethod.invoke(tm, null);

         iTelephony.endCall();
     }

     /**
      * @param v
      * @throws Exception
      */
     public void hangUp2(View v) throws Exception{
         Toast.makeText(getApplicationContext(), "hangUp1", 0).show();

         Class clazz = Class.forName("android.os.ServiceManager");

         Method getServiceMethod = clazz.getMethod("getService", String.class);

         IBinder iBinder = (IBinder) getServiceMethod.invoke(null, TELEPHONY_SERVICE);

         ITelephony iTelephony = ITelephony.Stub.asInterface(iBinder);

         iTelephony.endCall();
     }

 }