Android定时发短信源代码

      package com.ldci.cccc;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;

import android.app.Activity;
import android.app.AlarmManager;
import android.app.AlertDialog;
import android.app.PendingIntent;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TimePicker;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener {
	MyEvent event2;
	ArrayList<MyEvent> al = new ArrayList<MyEvent>();
	TyhYa ya;
	/** Called when the activity is first created. */
	String moblenum;
	String sendsms;

	private EditText bt1, nr;

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

		Button bt = (Button) findViewById(R.id.Button01);
		bt.setOnClickListener(this);

		bt1 = (EditText) findViewById(R.id.EditText01);
		nr = (EditText) findViewById(R.id.EditText02);

	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.Button01:
			View view = getLayoutInflater().inflate(R.layout.alarm, null);
			final TimePicker timePicker = (TimePicker) view
					.findViewById(R.id.timepicker);
			final DatePicker datePicker = (DatePicker) view
					.findViewById(R.id.DatePicker01);
			timePicker.setIs24HourView(true);

			new AlertDialog.Builder(this).setTitle("设置提醒时间").setView(view)
					.setPositiveButton("确定",
							new DialogInterface.OnClickListener() {

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

									Calendar c = Calendar.getInstance();

									c.set(datePicker.getYear(), datePicker
											.getMonth(), datePicker
											.getDayOfMonth(), timePicker
											.getCurrentHour(), timePicker
											.getCurrentMinute(), 0);
									SimpleDateFormat sdf = new SimpleDateFormat(
											"yyyy-MM-dd HH:mm");
									moblenum = bt1.getText().toString();
									sendsms = nr.getText().toString();

									Date date2 = TyhYa.getDateTime(sdf.format(c
											.getTime()));
									event2 = new MyEvent(moblenum, sendsms,
											date2.getTime());
									al.add(event2);
									ya = new TyhYa(al);
									event2.runEvent();
									Thread thread = new Thread(ya);
									thread.start();

									Toast
											.makeText(
													MainActivity.this,
													"您将在"
															+ sdf.format(c
																	.getTime())
															+ "发送短信",
													Toast.LENGTH_LONG).show();
									bt1.setText("");
									nr.setText("");
								}
							}).setNegativeButton("取消", null).show();
			break;
		}
	}
}