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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// 包声明，表明该类所在的包名为net.micode.notes.ui
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package net.micode.notes.ui;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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// AlarmReceiver类继承自BroadcastReceiver，BroadcastReceiver用于接收系统发送的广播消息，在Android中常用于实现各种系统事件的响应逻辑，例如这里用于响应闹钟触发相关的广播。
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public class AlarmReceiver extends BroadcastReceiver {
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// 重写BroadcastReceiver的onReceive方法，该方法会在接收到与之匹配的广播时被调用，在此类中主要用于启动与闹钟提醒相关的Activity（即AlarmAlertActivity）。
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@Override
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public void onReceive(Context context, Intent intent) {
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// 通过Intent的setClass方法，将原本传入的意图（intent）的目标类修改为AlarmAlertActivity.class，也就是将广播意图重新定向到用于展示闹钟提醒详细信息的Activity。
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intent.setClass(context, AlarmAlertActivity.class);
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// 给意图添加FLAG_ACTIVITY_NEW_TASK标志，这是因为BroadcastReceiver接收到广播时所处的上下文环境可能没有与之关联的任务栈（Task），
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// 添加该标志可以确保启动的Activity能够在一个新的任务栈中被创建并展示给用户，避免因缺少任务栈而导致启动失败的问题。
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intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
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// 使用传入的上下文（context）来启动经过上述设置后的意图对应的Activity，也就是启动AlarmAlertActivity，让其展示闹钟提醒的相关界面，例如提醒内容摘要、操作按钮等，供用户进行后续操作。
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context.startActivity(intent);
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}
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} |
