Android 闹钟源码

package xuyan.alarmmanager.test;

import java.util.Calendar;

import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.app.Service;
import android.app.TimePickerDialog;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TimePicker;
import android.widget.Toast;

public class AlarmManagerActivity extends Activity {
/** Called when the activity is first created. */
Button settime;
AlarmManager alarmmanager;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
alarmmanager=(AlarmManager)getSystemService(Service.ALARM_SERVICE);
settime=(Button)this.findViewById(R.id.button1);
settime.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {
// TODO Auto-generated method stub
Calendar currenttime=Calendar.getInstance();
//创建一个Timepicketdialog的实例，并把它显示出来
new TimePickerDialog(AlarmManagerActivity.this, 0, new TimePickerDialog.OnTimeSetListener() {

public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// TODO Auto-generated method stub

//指定启动Alarmmanager组建
Intent intent=new Intent();
intent.setClass(AlarmManagerActivity.this, AlarmActivity.class);

//创建PindingIntent对象
PendingIntent pi=PendingIntent.getActivity(AlarmManagerActivity.this, 0, intent, 0);
Calendar c=Calendar.getInstance();//实例化
c.setTimeInMillis(System.currentTimeMillis());

//根据用户选择时间来设置Calendar对象
c.set(Calendar.HOUR, hourOfDay);
c.set(Calendar.MINUTE, minute);

//设置AlarmManager将在Calendar对应的时间启动指定组件
alarmmanager.set(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), pi);

//显示闹铃提示设置成功的信息
Toast.makeText(AlarmManagerActivity.this, "设置成功", 5000).show();
}
}, currenttime.get(Calendar.HOUR_OF_DAY), currenttime.get(Calendar.MINUTE), false).show();
}
});
}
}

package xuyan.alarmmanager.test;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;
import android.widget.Button;

public class AlarmActivity extends  Activity{

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);

//创建一个对话框
new  AlertDialog.Builder(AlarmActivity.this)
.setTitle("闹铃")
.setMessage("闹铃响了,GO!GO!GO!")
.setPositiveButton("确定", new OnClickListener(){

public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
AlarmActivity.this.finish();
}

}).show();
}

}