Let us implement this solution in 3 steps :
a. Define this class or receiver :
This is your main class :
package com.sample;
import java.lang.reflect.Method;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.widget.Toast;
import com.android.internal.telephony.*;
public class main extends BroadcastReceiver {
private static final String TAG = null;
String incommingNumber;
String incno1= "9916090941";
public void onReceive(Context context, Intent intent) {
Bundle bundle = intent.getExtras();
if(null == bundle)
return;
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
try {
// Java reflection to gain access to TelephonyManager's
// ITelephony getter
TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
Log.v(TAG, "Get getTeleService...");
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);
Bundle b = intent.getExtras();
incommingNumber = b.getString(TelephonyManager.EXTRA_INCOMING_NUMBER);
Log.v(TAG,incommingNumber );
Log.v(TAG,incno1 );
if ( incommingNumber.equals(incno1) )
{
telephonyService = (ITelephony) m.invoke(tm);
telephonyService.silenceRinger();
telephonyService.endCall();
Log.v(TAG,"BYE BYE BYE" );
}
else{
telephonyService.answerRingingCall();
Log.v(TAG,"HELLO HELLO HELLO" );
}
} catch (Exception e) {
e.printStackTrace();
Log.e(TAG,
"FATAL ERROR: could not connect to telephony subsystem");
Log.e(TAG, "Exception object: " + e);
}
}
}
b. Manifest file :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.sample"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<receiver android:name=".main">
<intent-filter android:priority="100" >
<action android:name="android.intent.action.PHONE_STATE" />
</intent-filter>
</receiver>
</application>
<uses-sdk android:minSdkVersion="7" />
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
</manifest>
c . Define telephone aidl , under com.android.internal.telephony
package com.android.internal.telephony;
interface ITelephony {
boolean endCall();
void answerRingingCall();
void silenceRinger();
}
mh: Worked for me only in emulator, not on real devices... All devices above android 2.3 require root permission or installation as a system app to be able to use the permission android.permission.MODIFY_PHONE_STATE.
