定时闹钟

文章目录

####1、功能介绍
点击按钮设置闹钟 --》时间到–》闹铃提醒
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####2、代码结构
这里写图片描述

####3、主要功能代码

MainActivity.java

package com.example.menglux.myalarm;import android.app.AlarmManager;
import android.app.PendingIntent;
import android.app.TimePickerDialog;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.TimePicker;import org.json.JSONObject;import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Calendar;public class MainActivity extends AppCompatActivity {private String  TAG = "MainActivity: ";private AlarmManager alarmManager;private PendingIntent pendingIntent;private static  int    num = 100;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//闹钟管理器alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);}public void setAlarmOne(View view){//获取当前系统的时间Calendar calendar=Calendar.getInstance();int hour=calendar.get(Calendar.HOUR_OF_DAY);//时int minute=calendar.get(Calendar.MINUTE);//分//先要弹出时间对话框TimePickerDialog timePickerDialog=new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {@Overridepublic void onTimeSet(TimePicker timePicker, int i, int i1) {//确定选择好的时间  给了CalendarCalendar c=Calendar.getInstance();
/*                c.set(Calendar.YEAR,2018);// c.set(Calendar.MONTH,Calendar.JUNE);//也可以填数字，0-11,一月为0c.set(Calendar.MONTH,7);//也可以填数字，0-11,一月为0c.set(Calendar.DAY_OF_MONTH, 1);*/c.set(Calendar.HOUR_OF_DAY,i);c.set(Calendar.MINUTE,i1);c.set(Calendar.SECOND,20);System.out.println(TAG + "设定的闹钟时间：" + i + " 时 " +  i1  + " 分");Intent intent=new Intent();intent.setAction("com.example.alarmandnotice_android.DCAT");//对于Android 8.0 系统 会出现收不到 闹铃广播的问题  添加下面内容  就是接受广播的类所在位置intent.setComponent(new ComponentName("com.example.menglux.myalarm","com.example.menglux.myalarm.BroadcatReceive"));//设置多个闹钟 只是需要第二个 参数 不同//  PendingIntent pendingIntent= PendingIntent.getBroadcast(MainActivity.this,0x101,intent,0);pendingIntent = PendingIntent.getBroadcast(MainActivity.this,num,intent,0);System.out.println(TAG + "第几个闹钟：" + num);//android Api的改变不同版本中设 置有所不同if(Build.VERSION.SDK_INT<19){//设置闹钟alarmManager.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);}else{alarmManager.setExact(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);}num ++ ;}},hour,minute,false);timePickerDialog.show();}//删除闹钟public void cancelAlarmCycle(View view){Intent intent=new Intent();intent.setAction("com.example.alarmandnotice_android.DCAT");//对于Android 8.0 系统 会出现收不到 闹铃广播的问题  添加下面内容  就是接受广播的类所在位置intent.setComponent(new ComponentName("com.example.menglux.myalarm","com.example.menglux.myalarm.BroadcatReceive"));//设置多个闹钟 只是需要第二个 参数 不同  pendingIntent = PendingIntent.getBroadcast(MainActivity.this,num ,intent,0);alarmManager.cancel(pendingIntent);  //**多个闹钟时 ，想删除哪一个，只需要删除对应的 pendingIntent ，这个时候最重要的时 pendingIntent 要和设置的那个闹钟保持一样，特别是里面的参数 值**}}

BroadcatReceive.java

package com.example.menglux.myalarm;import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;/*** Created by lum on 2018/7/31.*/public class BroadcatReceive extends BroadcastReceiver {private  String  TAG = "BroadcatReceive: ";@Overridepublic void onReceive(Context context, Intent intent) {System.out.println(TAG + "获得广播");if ("com.example.alarmandnotice_android.DCAT".equals(intent.getAction())){System.out.println(TAG + "获得闹铃广播");//接受到闹铃广播 跳转界面 ，当有多个闹铃时 ，可通过获取系统时间 与 保存设定个的闹铃时间进行对比 来区分不同闹铃Intent intentdata = new Intent(context,AlarmShowActivity.class);intentdata.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);System.out.println(TAG + "lum_2");context.startActivity(intentdata);System.out.println(TAG + "lum_3");}}
}

AlarmShowActivity.java

package com.example.menglux.myalarm;import android.media.MediaPlayer;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;import java.text.SimpleDateFormat;
import java.util.Locale;/*** Created by lum on 2018/7/31.*/public class AlarmShowActivity extends AppCompatActivity {private String TAG = "AlarmShowActivity: " ;private MediaPlayer mediaPlayer;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_show);System.out.println(TAG + "");getCurrentTime();mediaPlayer = MediaPlayer.create(this, R.raw.nlch);mediaPlayer.start();}//得到当前时间private void getCurrentTime() {//24小时制SimpleDateFormat dFormat24Huur = new SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.CHINA);//SimpleDateFormat dFormat24Huur = new SimpleDateFormat("yyyy-M-d H:m", Locale.CHINA);String date24 = dFormat24Huur.format(new java.util.Date());//12小时制SimpleDateFormat dFormat12Hour = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss", Locale.CHINA);String date12 = dFormat12Hour.format(new java.util.Date());System.out.println(TAG + "获得当前的系统时间：" + "24小时： " +  date24  + "  12小时： " + date12);}public void stop(View view){mediaPlayer.stop();finish();}
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.example.menglux.myalarm"><applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/AppTheme"><activity android:name=".MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><activity android:name=".AlarmShowActivity"/><receiver android:name=".BroadcatReceive"><intent-filter><action android:name="com.example.alarmandnotice_android.DCAT"></action></intent-filter></receiver></application></manifest>

demo 下载

文献参考：
Android之实现简单小闹钟
https://blog.csdn.net/d_shadow/article/details/55144742

Android实现简单的闹钟
https://blog.csdn.net/dongye2016/article/details/78052214

Android广播事件机制及应用(实现简单的定时提醒功能)
https://blog.csdn.net/wanglang3081/article/details/7456684

安卓小项目实战之–定时提醒备忘录
https://github.com/zeschi/Android-AlarmManagerClock-master