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5._Open-source-software-rea.../src/ui/AlarmReceiver.java

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/*
* AlarmReceiver类 - 用于处理闹钟广播接收
* 当接收到闹钟相关的广播时该类会启动一个指定的Activity
*
* extends BroadcastReceiver: 继承自Android的BroadcastReceiver类
*/
package net.micode.notes.ui;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class AlarmReceiver extends BroadcastReceiver {
/*
* onReceive方法 - 系统调用的接收广播的方法
* 当接收到广播时该方法会被调用然后启动AlarmAlertActivity
*
* @param context 上下文对象,提供了调用环境的信息
* @param intent 包含广播的内容
*/
@Override
public void onReceive(Context context, Intent intent) {
// 设置Intent的类以便启动AlarmAlertActivity
intent.setClass(context, AlarmAlertActivity.class);
// 添加标志表示在一个新的任务中启动Activity
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
// 根据设置的Intent启动Activity
context.startActivity(intent);
}
}