Android中使用AlarmManager设置闹钟

末蓝、 2023-10-08 11:58 30阅读 0赞

## 场景 ##

设置闹钟

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

闹钟提醒

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

注：

博客：  
[https://blog.csdn.net/badao\_liumang\_qizhi ][https_blog.csdn.net_badao_liumang_qizhi]  
关注公众号  
霸道的程序猿  
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## 实现 ##

新建一个MainActivity，在其布局文件中添加一个时间选择器和一个Button

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".MainActivity">
    
        <TimePicker
            android:id="@+id/timePicker1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <Button
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:layout_centerHorizontal="true"
            android:text="设置闹钟" />
    
    </RelativeLayout>

然后在MainActivity中，将时间选择器的时分秒设置给日历对象，获取AlarmManager对象，然后设置闹钟，并提醒。

在设置闹钟的

alarm.set(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(),pendingIntent);

其中AlarmManager.RTC\_WAKEUP有如下几种类型

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2][]

然后后面的pendingIntent是封装了上面显示闹钟的Intent,显示闹钟的intent中跳转显示的页面AlarmActivity中

package com.badao.alarmmanager;
    
    import androidx.appcompat.app.AppCompatActivity;
    
    import android.app.AlertDialog;
    import android.content.DialogInterface;
    import android.os.Bundle;
    
    public class AlarmActivity extends AppCompatActivity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            AlertDialog alert = new AlertDialog.Builder(this).create();
            alert.setIcon(R.drawable.bg02);      //设置对话框的图标
            alert.setTitle("公众号：");       //设置对话框的标题
            alert.setMessage("霸道的程序猿");   //设置要显示的内容
            //添加确定按钮
            alert.setButton(DialogInterface.BUTTON_POSITIVE,"确定", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {}
            });
            alert.show();           // 显示对话框
        }
    }

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200110215850446.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[https_blog.csdn.net_badao_liumang_qizhi]: https://blog.csdn.net/badao_liumang_qizhi
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/2020011021590860.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70