package com.javatpoint.callstates;

import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.view.Menu;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        TelephonyManager telephonyManager =
                      (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
       
        PhoneStateListener callStateListener = new PhoneStateListener() {
        public void onCallStateChanged(int state, String incomingNumber) 
        {
              if(state==TelephonyManager.CALL_STATE_RINGING){
                        Toast.makeText(getApplicationContext(),"Phone Is Riging",
                                                                         Toast.LENGTH_LONG).show();
              }
                if(state==TelephonyManager.CALL_STATE_OFFHOOK){
                    Toast.makeText(getApplicationContext(),"Phone is Currently in A call", 
                                                                                  Toast.LENGTH_LONG).show();
                }
                                
                if(state==TelephonyManager.CALL_STATE_IDLE){
                    Toast.makeText(getApplicationContext(),"phone is neither ringing nor in a call",
                                                                                                 Toast.LENGTH_LONG).show();
                }
        }
        };
        telephonyManager.listen(callStateListener,PhoneStateListener.LISTEN_CALL_STATE);
        
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    
}