本实例通过TimePickerDialog时间选择对话框让用户设置闹钟。并通过AlarmManager全局定时器在指定的时间启动闹钟Activity
。

程序执行效果图：

实例代码：

package com.jph.alarm.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.view.View.OnClickListener;

import android.widget.Button;

import android.widget.TimePicker;

import android.widget.Toast;

/**

 * Describe:</br>

 * </br>简单闹钟提醒

 * </br>本实例通过TimePickerDialog时间选择对话框

 * </br>让用户设置闹钟并通过AlarmManager全局定时器

 * </br>在指定的时间启动闹钟Activity

 * </br>@author jph

 * </br>Date:2014.07.29

 * */

public class AlarmTest extends Activity

{

	Button setTime;

	AlarmManager aManager;

	Calendar currentTime = Calendar.getInstance();

	@Override

	public void onCreate(Bundle savedInstanceState)

	{

		super.onCreate(savedInstanceState);

		setContentView(R.layout.main);

		// 获取程序界面的button

		setTime = (Button) findViewById(R.id.setTime);

		// 获取AlarmManager对象

		aManager = (AlarmManager) getSystemService(

			Service.ALARM_SERVICE);

		// 为“设置闹铃”button绑定监听器。

setTime.setOnClickListener(new OnClickListener()

		{

			@Override

			public void onClick(View source)

			{

				Calendar currentTime = Calendar.getInstance();

				// 创建一个TimePickerDialog实例，并把它显示出来。

				new TimePickerDialog(AlarmTest.this, 0, // 绑定监听器

					new TimePickerDialog.OnTimeSetListener()

					{

						@Override

						public void onTimeSet(TimePicker tp,

							int hourOfDay, int minute)

						{

							// 指定启动AlarmActivity组件

							Intent intent = new Intent();

							intent.setAction("com.jph.alarm.test.ACTION");

							// 创建PendingIntent对象

							PendingIntent pi = PendingIntent.getActivity(

								AlarmTest.this, 0, intent, 0);

							Calendar c = Calendar.getInstance();

							// 依据用户选择时间来设置Calendar对象

							c.set(Calendar.HOUR_OF_DAY, hourOfDay);

							c.set(Calendar.MINUTE, minute);

							// 设置AlarmManager将在Calendar相应的时间启动指定组件

							aManager.set(AlarmManager.RTC_WAKEUP,

								c.getTimeInMillis(), pi);

							// 显示闹铃设置成功的提示信息

							Toast.makeText(AlarmTest.this, "闹铃设置成功啦"

								, Toast.LENGTH_SHORT).show();

						}

					}, currentTime.get(Calendar.HOUR_OF_DAY), currentTime

						.get(Calendar.MINUTE), false).show();

			}

		});

	}

}

package com.jph.alarm.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.view.View.OnClickListener;

import android.widget.Button;

import android.widget.TimePicker;

import android.widget.Toast;

/**

 * Describe:</br>

 * </br>简单闹钟提醒

 * </br>本实例通过TimePickerDialog时间选择对话框

 * </br>让用户设置闹钟并通过AlarmManager全局定时器

 * </br>在指定的时间启动闹钟Activity

 * </br>@author jph

 * </br>Date:2014.07.29

 * */

public class AlarmTest extends Activity

{

	Button setTime;

	AlarmManager aManager;

	Calendar currentTime = Calendar.getInstance();

	@Override

	public void onCreate(Bundle savedInstanceState)

	{

		super.onCreate(savedInstanceState);

		setContentView(R.layout.main);

		// 获取程序界面的button

		setTime = (Button) findViewById(R.id.setTime);

		// 获取AlarmManager对象

		aManager = (AlarmManager) getSystemService(

			Service.ALARM_SERVICE);

		// 为“设置闹铃”button绑定监听器。

		setTime.setOnClickListener(new OnClickListener()

		{

			@Override

			public void onClick(View source)

			{

				Calendar currentTime = Calendar.getInstance();

				// 创建一个TimePickerDialog实例，并把它显示出来。

new TimePickerDialog(AlarmTest.this, 0, // 绑定监听器

					new TimePickerDialog.OnTimeSetListener()

					{

						@Override

						public void onTimeSet(TimePicker tp,

							int hourOfDay, int minute)

						{

							// 指定启动AlarmActivity组件

							Intent intent = new Intent();

							intent.setAction("com.jph.alarm.test.ACTION");

							// 创建PendingIntent对象

							PendingIntent pi = PendingIntent.getActivity(

								AlarmTest.this, 0, intent, 0);

							Calendar c = Calendar.getInstance();

							// 依据用户选择时间来设置Calendar对象

							c.set(Calendar.HOUR_OF_DAY, hourOfDay);

							c.set(Calendar.MINUTE, minute);

							// 设置AlarmManager将在Calendar相应的时间启动指定组件

							aManager.set(AlarmManager.RTC_WAKEUP,

								c.getTimeInMillis(), pi);

							// 显示闹铃设置成功的提示信息

							Toast.makeText(AlarmTest.this, "闹铃设置成功啦"

								, Toast.LENGTH_SHORT).show();

						}

					}, currentTime.get(Calendar.HOUR_OF_DAY), currentTime

						.get(Calendar.MINUTE), false).show();

			}

		});

	}

}

AndroidManifest.xml

<?

xml version="1.0" encoding="utf-8"?

>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

	package="com.jph.alarm.test"

	android:versionCode="1"

	android:versionName="1.0">

	<uses-sdk

		android:minSdkVersion="7"

		android:targetSdkVersion="18" />

	<application android:icon="@drawable/ic_launcher" android:label="@string/app_name">

		<activity android:name=".AlarmTest"

				android:label="@string/app_name">

			<intent-filter>

				<action android:name="android.intent.action.MAIN" />

				<category android:name="android.intent.category.LAUNCHER" />

			</intent-filter>

		</activity>

		<activity android:name=".AlarmActivity">

		    <intent-filter>

			    <action android:name="com.jph.alarm.test.ACTION"/>

			    <category android:name="android.intent.category.DEFAULT"></category>

			</intent-filter>

		</activity>

	</application>

</manifest>