MultiSmsSender/src/com/openwide/android/MultiSmsSender.java

package com.openwide.android;

import java.util.HashSet;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.gsm.SmsManager;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.inputmethod.EditorInfo;
import android.widget.Button;
import android.widget.TextView;

public class MultiSmsSender extends Activity {
	private Button mAddButton;
	private Button mSend;
	private TextView mContacts;
	private TextView mEditor;

	private ProgressDialog mSendingDialog;

	public static final int ACTIVITY_EDIT = 0;
	public static final int ACTIVITY_ADD_GROUP = 1;
	private static final int SENDING_DIALOG_KEY = 0;
	private static final int INSERT_ID = Menu.FIRST;

	public static final String PARAM_NUMBERS_LIST = "param number list";

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		mAddButton = (Button) findViewById(R.id.contacts);
		mSend = (Button) findViewById(R.id.send);
		mContacts = (TextView) findViewById(R.id.numbers);
		mEditor = (TextView) findViewById(R.id.editor);

		mContacts.setImeOptions(EditorInfo.IME_ACTION_NEXT);
		mEditor.setImeOptions(EditorInfo.IME_ACTION_DONE);

		mAddButton.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				selectNumbers();
			}
		});

		mSend.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				sendMessage();

			}
		});
	}

	public void selectNumbers() {
		Intent i = new Intent(this, PhoneNumberSelection.class);
		String rawNumbers = mContacts.getText().toString();
		String[] numbers = rawNumbers.split(",");
		i.putExtra(PARAM_NUMBERS_LIST, numbers);
		startActivityForResult(i, ACTIVITY_EDIT);
	}

	public void sendMessage() {
		SmsManager manager = SmsManager.getDefault();
		String message = mEditor.getText().toString();
		String[] numbers = mContacts.getText().toString().split(",");
		HashSet<String> allreadySend = new HashSet<String>();
		int size = numbers.length;
		showDialog(SENDING_DIALOG_KEY);
		if(numbers.length != 0) {
			for (int i = 0; i < numbers.length; i++) {
				String newN = numbers[i].trim();
				mSendingDialog.setMax(size);
				if (!newN.equals("")) {
					mSendingDialog.setProgress(i / size);
					if (!allreadySend.contains(newN)) {
						allreadySend.add(newN);
						manager.sendMultipartTextMessage(newN, null, manager.divideMessage(message), null, null);

					}
				}
			}
			mSendingDialog.dismiss();
			new AlertDialog.Builder(this).setPositiveButton(getResources().getString(R.string.ok),
					new DialogInterface.OnClickListener() {

				@Override
				public void onClick(DialogInterface dialog, int which) {
					dialog.dismiss();

				}
			}).setMessage( getResources().getString(R.string.message_sent)).show();
		}else {
			new AlertDialog.Builder(this).setPositiveButton(getResources().getString(R.string.ok),
					new DialogInterface.OnClickListener() {

				@Override
				public void onClick(DialogInterface dialog, int which) {
					dialog.dismiss();

				}
			}).setMessage(getResources().getString(R.string.enter_number)).show();
		}

	}

	@Override
	protected Dialog onCreateDialog(int id) {
		switch (id) {
		case SENDING_DIALOG_KEY: {
			mSendingDialog = new ProgressDialog(this);
			mSendingDialog.setTitle(R.string.sending);
			mSendingDialog.setMessage(getResources().getString(R.string.wait));
			mSendingDialog.setIndeterminate(true);
			mSendingDialog.setCancelable(true);
			return mSendingDialog;
		}
		}
		return null;
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode,
			Intent intent) {
		super.onActivityResult(requestCode, resultCode, intent);
		if (intent != null) {
			String[] numbers = intent.getExtras().getStringArray(
					PARAM_NUMBERS_LIST);
			String string = "";
			HashSet<String> res = new HashSet<String>();
			for (int i = 0; i < numbers.length; i++) {
				String newN = numbers[i].trim();
				if (!newN.equals("")) {
					res.add(newN);
				}
			}
			String oldContactsString = mContacts.getText().toString();
			String[] oldContacts = oldContactsString.split(",");
			for (int i = 0; i < oldContacts.length; i++) {
				String newN = oldContacts[i].trim();
				if (!newN.equals("")) {
					res.add(newN);
				}
			}

			for (String number : res) {
				string += number + ", ";
			}

			mContacts.setText(string);
		}
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		super.onCreateOptionsMenu(menu);
		menu.add(0, INSERT_ID,0, R.string.add_group);
		return true;
	}

	@Override
	public boolean onMenuItemSelected(int featureId, MenuItem item) {
		switch(item.getItemId()) {
		case INSERT_ID:
			display_group_list();
			return true;
		}        
		return super.onMenuItemSelected(featureId, item);
	}


	public void display_group_list(){

		Intent i = new Intent(this, SelectGroupActivity.class);
		startActivityForResult(i, ACTIVITY_ADD_GROUP);
	}
}