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Block incoming calls in android

How to block calls in Android/Reject incoming calls in android/program to block unwanted calls in Android/Android call   blocking example/blacklist example in android

Create an interface ITelephony.java with package name com.android.internal.telephony

ITelephony.java
package com.android.internal.telephony;

public interface ITelephony
{

      boolean endCall();
       void answerRingingCall();

}

Create a broadcast receiver and get incoming number from intent. 

CallReceiver.java
package com.example;

import java.lang.reflect.Method;
import com.android.internal.telephony.ITelephony;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.TelephonyManager;

public class CallReceiver extends BroadcastReceiver{

      private String incomingnumber;

      @Override
      public void onReceive(Context context, Intent intent) {
            String s[]={"9000000000","800000000"};
            Bundle b = intent.getExtras();
            incomingnumber = b.getString(TelephonyManager.EXTRA_INCOMING_NUMBER);
            try {

                  TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
                  Class c = Class.forName(tm.getClass().getName());
                  Method m = c.getDeclaredMethod("getITelephony");
                  m.setAccessible(true);
                  com.android.internal.telephony.ITelephony telephonyService = (ITelephony) m.invoke(tm); 

                  for (int i = 0; i < s.length; i++) {
                        if(s[i].equals(incomingnumber)){
                              telephonyService.endCall();
                        }
                  }
            }
            catch (Exception e) {
                  // TODO: handle exception
            }
      }
}


In manifest file


<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.example" android:versionCode="1" android:versionName="1.0">
      <uses-sdk android:minSdkVersion="10" />
      <uses-permission android:name="android.permission.READ_PHONE_STATE" />
      <application android:icon="@drawable/icon" android:label="@string/app_name">
            <receiver android:name=".CallReceiver">
                  <intent-filter>
                        <action android:name="android.intent.action.PHONE_STATE" />
                  </intent-filter>
            </receiver>

      </application>
</manifest>

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Comments

  1. Gaurav Pansheriya7 January 2013 at 20:49

    Not a block incomming call of this code.. Please help

    ReplyDelete
  2. Fabien Husson16 January 2013 at 01:59

    Try to add



    to your manifest file

    ReplyDelete
    Replies
    1. Fabien Husson16 January 2013 at 02:01

      Try to add 'android.permission.CALL_PHONE' to your manifest file

      Delete
  3. duedpraveen7 May 2013 at 03:52

    This comment has been removed by the author.

    ReplyDelete
    Replies
    1. duedpraveen14 May 2013 at 01:06

      hey it is working in my emulator but not in my phone.
      i have came to know that it is not supported nowadays. as they don't want third party apps to reject calls. it was working well in the past but not from now.

      Delete

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