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本篇文章给大家分享的是有关如何用HTML+JS实现Android闹钟功能，小编觉得挺实用的，因此分享给大家学习，希望大家阅读完这篇文章后可以有所收获，话不多说，跟着小编一起来看看吧。
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参数：
argu：型如“key1=value1;key2=value2;......”的参数表。首先，该参数表支持rexseeNotification.show()函数的所有参数，用于显示通知(调用rexseeNotification.show())，请参见rexseeNotification。另外，该参数表增加了以下参数：
forcerepeat：true或false。当该闹钟是由推送信息而非页面设定时，如果id和之前的推送信息的id重复，由该参数决定是否强制重新执行，默认为false，即不会重复执行任何id重复的推送信息。
command：闹钟响时要执行的命令，目前支持的命令包括：
notification：发送通知，默认值。
startApplication：启动程序。
cleanApplicationData：清楚本程序的业务数据(私有内存中的所有数据)。
notificationimmediately：true或false，无论命令是否notification，该参数都允许系统在设置闹钟的***时间先发送一个通知，然后在指定的时间延迟后再执行命令，默认为false。
notificationafterexec：true或false，无论命令是否notification，该参数都允许系统在执行完命令后发送一个通知，默认为false。
alermname：闹钟的名称，默认为"defaultAlerm"。
alermfirsttime：时间戳，***次闹钟响(即执行命令)的时间，如果设为0或其他小于当前时间的时间戳，命令将立即执行，默认为立即执行。
alermrepeatinterval：毫秒数，***次闹钟响之后，间隔该时间后重复执行命令，如果小于零，将不会重复执行。
startApplicationUrl：如果命令为startApplication，程序启动后访问的URL地址。
示例：
exseeAlarm.set('command=startApplication;startApplicationUrl=http://www.rexsee.com/rexsee/alarmClock.html;alermName=test;alermfirsttime='+(rexseeAlarm.getCurrentTime()+5000)+';title=闹钟测试;message=闹钟测试内容;url=http://www.rexsee.com/rexsee/alarmClock.html'); rexseeDialog.toast('设置完毕！');Rexsee的Android Alarm源码如下：
/* * Copyright (C) 2011 The Rexsee Open Source Project * * Licensed under the Rexsee License, Version 1.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.rexsee.com/CN/legal/license.html * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package rexsee.core.alarm; import rexsee.core.browser.JavascriptInterface; import rexsee.core.browser.RexseeBrowser; import rexsee.core.device.NotificationArgumentsSheet; import rexsee.core.device.RexseeNotification; import rexsee.core.receiver._Receiver; import android.app.AlarmManager; import android.app.PendingIntent; import android.content.Context; import android.content.Intent; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; public class RexseeAlarm implements JavascriptInterface { private static final String INTERFACE_NAME = "Alarm"; @Override public String getInterfaceName() { return mBrowser.application.resources.prefix + INTERFACE_NAME; } @Override public JavascriptInterface getInheritInterface(RexseeBrowser childBrowser) { return this; } @Override public JavascriptInterface getNewInterface(RexseeBrowser childBrowser) { return new RexseeAlarm(childBrowser); } public static final String ALARM_ACTION = "action.alarm.id_"; public static final String ALARM_EXTRA_ARGU = "argu"; public static final String DATABASE_ALARM = "alarm.db"; public static final String TABLE_ALARM = "alarm"; private final Context mContext; private final RexseeBrowser mBrowser; public RexseeAlarm(RexseeBrowser browser) { mBrowser = browser; mContext = browser.getContext(); } public RexseeAlarm(Context context) { mBrowser = null; mContext = context; } private static void _setAlarm(Context context, AlarmManager mgr, String body, boolean save) { NotificationArgumentsSheet argu = (new NotificationArgumentsSheet()).parseArguments(body); if (argu.notificationimmediately) { (new RexseeNotification(context)).show(argu); } if (argu.getAlermFirstTime() > System.currentTimeMillis()) { Intent intent = new Intent(context, _Receiver.class); intent.setAction(ALARM_ACTION + argu.alermname); intent.putExtra(ALARM_EXTRA_ARGU, body); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); mgr.cancel(pendingIntent); long interval = argu.getAlermRepeatInterval(); if (interval > 0) { mgr.setRepeating(AlarmManager.RTC_WAKEUP, argu.getAlermFirstTime(), interval, pendingIntent); } else { mgr.set(AlarmManager.RTC_WAKEUP, argu.getAlermFirstTime(), pendingIntent); } if (save) { SQLiteDatabase db = context.openOrCreateDatabase(DATABASE_ALARM, Context.MODE_PRIVATE, null); try { db.execSQL("CREATE TABLE if not exists " + TABLE_ALARM + " (name TEXT, argu TEXT, Primary key(name));"); db.execSQL("DELETE FROM " + TABLE_ALARM + " WHERE name='" + argu.alermname + "';"); db.execSQL("INSERT INTO " + TABLE_ALARM + " VALUES ('" + argu.alermname + "', '" + body + "');"); } catch (Exception e) { } db.close(); } } else { exec(context, body); } } private static void _deleteAlarm(Context context, String name) { SQLiteDatabase db = context.openOrCreateDatabase(DATABASE_ALARM, Context.MODE_PRIVATE, null); try { db.execSQL("DELETE FROM " + TABLE_ALARM + " WHERE name='" + name + "';"); } catch (Exception e) { } db.close(); } public static void exec(Context context, String body) { NotificationArgumentsSheet argu = (new NotificationArgumentsSheet()).parseArguments(body); if (argu.getAlermRepeatInterval() <= 0) { _deleteAlarm(context, argu.alermname); } (new RexseeRemoteCommand(context, body)).exec(); } public static void updateAlarm(Context context) { SQLiteDatabase db = context.openOrCreateDatabase(DATABASE_ALARM, Context.MODE_PRIVATE, null); AlarmManager mgr = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); try { db.execSQL("CREATE TABLE if not exists " + TABLE_ALARM + " (name TEXT, argu TEXT, Primary key(name));"); Cursor cursor = db.rawQuery("SELECT * from " + TABLE_ALARM + ";", null); if (cursor != null && cursor.getCount() != 0) { for (int i = 0; i < cursor.getCount(); i++) { cursor.moveToPosition(i); _setAlarm(context, mgr, cursor.getString(1), false); } } cursor.close(); } catch (Exception e) { } db.close(); } //JavaScript Interface public void set(String body) { _setAlarm(mContext, (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE), body, true); } public String get() { SQLiteDatabase db = mContext.openOrCreateDatabase(DATABASE_ALARM, Context.MODE_PRIVATE, null); String rtn = ""; try { Cursor cursor = db.rawQuery("SELECT * from " + TABLE_ALARM + ";", null); if (cursor != null && cursor.getCount() != 0) { for (int i = 0; i < cursor.getCount(); i++) { cursor.moveToPosition(i); if (i > 0) rtn += ","; rtn += "{"; rtn += "\"name\":\"" + cursor.getString(0) + "\""; rtn += ",\"argu\":\"" + cursor.getString(1) + "\""; rtn += "}"; } } cursor.close(); } catch (Exception e) { if (mBrowser != null) mBrowser.exception(getInterfaceName(), e); } db.close(); return "[" + rtn + "]"; } public void cancel(String name) { Intent intent = new Intent(mContext, _Receiver.class); intent.setAction(ALARM_ACTION + name); PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); AlarmManager mgr = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); mgr.cancel(pendingIntent); _deleteAlarm(mContext, name); } public long getCurrentTime() { return System.currentTimeMillis(); } public long getMillisPerHour() { return 3600 * 1000; } public long getMillisPerDay() { return 3600 * 1000 * 24; } }以上就是如何用HTML+JS实现Android闹钟功能，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注创新互联行业资讯频道。
