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

    ReplyDelete
  2. Try to add



    to your manifest file

    ReplyDelete
    Replies
    1. Try to add 'android.permission.CALL_PHONE' to your manifest file

      Delete
  3. This comment has been removed by the author.

    ReplyDelete
    Replies
    1. 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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