SendingReliefMessage.java

package com.example.tarun.auxilium;

import android.app.AlertDialog;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.widget.TextView;
import android.widget.Toast;

public class SendingReliefMessage extends AppCompatActivity
{
    TextView tv1,tv2;
    BroadcastReceiver brsent;
    Intent intesent;
    PendingIntent pisent;
    IntentFilter infsent;
    String sms_sent="MessageSent";

    BroadcastReceiver brdel;
    Intent intedel;
    PendingIntent pidel;
    IntentFilter infdel;
    String sms_del="MessageDelivered";

    String phoneNo="";

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sending_relief_message);

        intesent=new Intent(sms_sent);
        pisent=PendingIntent.getBroadcast(getApplicationContext(),0,intesent,0);
        infsent=new IntentFilter(sms_sent);

        brsent=new BroadcastReceiver()
        {
            @Override
            public void onReceive(Context context, Intent intent)
            {
                switch (getResultCode())
                {
                    case RESULT_OK:
                        Toast.makeText(getApplicationContext(),"SMS Sent",Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_NULL_PDU:
                        Toast.makeText(getApplicationContext(),"Sending Failed because of PDU",Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                        Toast.makeText(getApplicationContext(),"Sending Failed",Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_RADIO_OFF:
                        Toast.makeText(getApplicationContext(),"Sending Failed because Radio is off",Toast.LENGTH_SHORT).show();
                        break;
                    default:
                        Toast.makeText(getApplicationContext(),"Error occured while sending the message",Toast.LENGTH_SHORT).show();
                        break;
                }
            }
        };

        intedel=new Intent(sms_del);
        pidel=PendingIntent.getBroadcast(getApplicationContext(),0,intedel,0);
        infdel=new IntentFilter(sms_del);

        brdel=new BroadcastReceiver()
        {
            @Override
            public void onReceive(Context context, Intent intent)
            {
                switch (getResultCode())
                {
                    case RESULT_OK:
                        Toast.makeText(getApplicationContext(),"SMS Delivered",Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_NULL_PDU:
                        Toast.makeText(getApplicationContext(),"Delivery Failed because of PDU",Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                        Toast.makeText(getApplicationContext(),"Delivery Failed",Toast.LENGTH_SHORT).show();
                        break;
                    case SmsManager.RESULT_ERROR_RADIO_OFF:
                        Toast.makeText(getApplicationContext(),"Delivery Failed because Radio is off",Toast.LENGTH_SHORT).show();
                        break;
                    default:
                        Toast.makeText(getApplicationContext(),"Error occured while delivery the message",Toast.LENGTH_SHORT).show();
                        break;
                }
            }
        };
        sendSMS();
    }

    @Override
    public void onResume()
    {
        super.onResume();
        registerReceiver(brsent,infsent);
        registerReceiver(brdel,infdel);
    }

    @Override
    public void onPause()
    {
        super.onPause();
        unregisterReceiver(brsent);
        unregisterReceiver(brdel);
    }

    public void sendSMS()
    {
        final ContactsDatabaseHandler handler= new ContactsDatabaseHandler(this);
        Cursor cursor=handler.getListContacts();
        if(cursor!=null && cursor.moveToFirst())
        {   phoneNo=cursor.getString(cursor.getColumnIndex("number"));
            do
            {
                cursor.moveToNext();
                if(!cursor.isAfterLast())
                {
                    phoneNo += ",";
                    phoneNo += cursor.getString(cursor.getColumnIndex("number"));
                }
            }while (!cursor.isAfterLast());
            cursor.close();
        }
        String numbers[] = phoneNo.split(", *");

        tv2=(TextView)findViewById(R.id.textView14);
        SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(SendingReliefMessage.this);
        tv2.setText(pref.getString("Relief", "null"));
        final String message=tv2.getText().toString();

        if(phoneNo.length()==0)
        {
            Toast.makeText(getApplicationContext(),"Import Contacts",Toast.LENGTH_SHORT).show();
            AlertDialog.Builder ab =new AlertDialog.Builder(SendingReliefMessage.this);
            ab.setMessage("Import the Contacts From your Contact List before you want to send the Message")
                    .setCancelable(false).setPositiveButton("OK", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which)
                {
                    dialog.cancel();
                }
            });
            AlertDialog alert=ab.create();
            alert.setTitle("MESSAGE");
            alert.show();

        }
        else if(message.equals("null") || message.equals("New Text") || message.equals("PLEASE SELECT THE MESSAGE YOU WANT TO SEND")
                || message.equals("Default message will be displayed here"))
        {
            AlertDialog.Builder ab =new AlertDialog.Builder(SendingReliefMessage.this);
            ab.setMessage("SELECT THE MESSAGE YOU WANT TO SEND")
                    .setCancelable(false).setPositiveButton("OK", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which)
                {
                    dialog.cancel();
                }
            });
            AlertDialog alert=ab.create();
            alert.setTitle("MESSAGE");
            alert.show();
        }
        else
        {
            tv1=(TextView)findViewById(R.id.textView13);
            tv1.setText(phoneNo);


            final SmsManager sms = SmsManager.getDefault();
            for( String messageNumber : numbers)
            {   messageNumber="+"+messageNumber;
                sms.sendTextMessage(messageNumber, null, message, pisent, pidel);
                final Handler sleep = new Handler();
                sleep.postDelayed(new Runnable() {
                    @Override
                    public void run()
                    {         // Do something after 5s = 5000m
                    }
                }, 2000);
            }
        }
    }
}