I would like to implement an application for block a mobile number for receiving or sending calls and messages. In my application I am entering mobile number at EditText
box then I am clicking a button for block the mobile number which has entered by the user.
I have implemented an activity class as follows:
public class BlockNumberActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
((Button)findViewById(R.id.block)).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String mobileNumer = ((EditText)findViewById(R.id.mobileNum)).getText().toString();
//How to block entered mobileNumber
}
});
((Button)findViewById(R.id.unblock)).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
String mobileNumer = ((EditText)findViewById(R.id.mobileNum)).getText().toString();
//How to unblock entered mobileNumber
}
});
}
}
I think we may use BroadcastReceiver
. But I don't have more knowledge on it. Please give me an idea how to implement blocking or unblocking mobile number.
Please any body help me.....
create PhoneCallReceiver .java
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.widget.Toast;
public class PhoneCallReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
TelephonyManager telephony = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
PhoneCallStateListener customPhoneListener = new PhoneCallStateListener(context);
telephony.listen(customPhoneListener, PhoneStateListener.LISTEN_CALL_STATE);
}}
now create PhoneCallStateListener .java
import java.lang.reflect.Method;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.media.AudioManager;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.widget.Toast;
import com.android.internal.telephony.ITelephony;
public class PhoneCallStateListener extends PhoneStateListener {
private Context context;
public PhoneCallStateListener(Context context){
this.context = context;
}
@Override
public void onCallStateChanged(int state, String incomingNumber) {
SharedPreferences prefs=PreferenceManager.getDefaultSharedPreferences(context);
switch (state) {
case TelephonyManager.CALL_STATE_RINGING:
String block_number = prefs.getString("block_number", null);
AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
//Turn ON the mute
audioManager.setStreamMute(AudioManager.STREAM_RING, true);
TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
try {
Toast.makeText(context, "in"+block_number, Toast.LENGTH_LONG).show();
Class clazz = Class.forName(telephonyManager.getClass().getName());
Method method = clazz.getDeclaredMethod("getITelephony");
method.setAccessible(true);
ITelephony telephonyService = (ITelephony) method.invoke(telephonyManager);
//Checking incoming call number
System.out.println("Call "+block_number);
if (incomingNumber.equalsIgnoreCase("+91"+block_number)) {
//telephonyService.silenceRinger();//Security exception problem
telephonyService = (ITelephony) method.invoke(telephonyManager);
telephonyService.silenceRinger();
System.out.println(" in "+block_number);
telephonyService.endCall();
}
} catch (Exception e) {
Toast.makeText(context, e.toString(), Toast.LENGTH_LONG).show();
}
//Turn OFF the mute
audioManager.setStreamMute(AudioManager.STREAM_RING, false);
break;
case PhoneStateListener.LISTEN_CALL_STATE:
}
super.onCallStateChanged(state, incomingNumber);
}}
Now in src create this package com.android.internal.telephony
now in this package Right Click -> New -> File now give name ITelephony.aidl
and paste this code
package com.android.internal.telephony;
interface ITelephony {
boolean endCall();
void answerRingingCall();
void silenceRinger();
}
NOTE: Code is tested in Android 2.2 (Froyo),2.3 (GingerBread)