package com.example.callertalker;
import java.util.Locale;
import android.media.AudioManager;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.widget.Toast;
import android.speech.tts.TextToSpeech;

public class MainActivity extends Activity implements TextToSpeech.OnInitListener {
private TextToSpeech tts;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

tts = new TextToSpeech(this, this);
  
        TelephonyManager telephonyManager = (TelephonyManager)getSystemService(
                                                                         Context.TELEPHONY_SERVICE);
        
        PhoneStateListener callStateListener = new PhoneStateListener() {
        public void onCallStateChanged(int state, String incomingNumber){
              if(state==TelephonyManager.CALL_STATE_RINGING){
              tts.speak(incomingNumber+" calling", TextToSpeech.QUEUE_FLUSH, null);
                  Toast.makeText(getApplicationContext(),"Phone is Ringing : "+incomingNumber, 
                                                                               Toast.LENGTH_LONG).show();
                 }
              if(state==TelephonyManager.CALL_STATE_OFFHOOK){
                    Toast.makeText(getApplicationContext(),"Phone in a call or call picked", 
                                                                                  Toast.LENGTH_LONG).show();
              }
              if(state==TelephonyManager.CALL_STATE_IDLE){
                    //phone is neither ringing nor in a call
              }
        }
        };
        telephonyManager.listen(callStateListener,PhoneStateListener.LISTEN_CALL_STATE);
}

@Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
int result = tts.setLanguage(Locale.US);
    if (result == TextToSpeech.LANG_MISSING_DATA
            || result == TextToSpeech.LANG_NOT_SUPPORTED) {
        Log.e("TTS", "This Language is not supported");
    } else {    
    }

} else {
    Log.e("TTS", "Initilization Failed!");
}
}

@Override
public void onDestroy() {
// Don't forget to shutdown tts!
if (tts != null) {
    tts.stop();
    tts.shutdown();
}
super.onDestroy();
}
}