定时闹钟

程序员文章站 2022-04-02 10:54:04

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1、功能介绍

点击按钮设置闹钟 –》时间到–》闹铃提醒
定时闹钟

定时闹钟

2、代码结构

定时闹钟

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;

    @Override
    protected 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() {
            @Override
            public void onTimeSet(TimePicker timePicker, int i, int i1) {
                //确定选择好的时间  给了Calendar
                Calendar 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0
                c.set(Calendar.MONTH,7);//也可以填数字，0-11,一月为0
                c.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){
        alarmManager.cancel(pendingIntent);
    }

}

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: ";
    @Override
    public 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;

    @Override
    protected 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">

    <application
        android: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>