Android实现闹钟，通过AlarmManager+BroadcastReceiver（广播）

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以下是我利用AlarmManager+BroadcastReceiver实现闹钟的功能，以及通过广播来实现通知，这里我的闹铃是存放在内存raw中，并不需要在清单文件中获取权限
这里写图片描述

这里写图片描述

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main"    android:layout_width="match_parent" android:layout_height="match_parent"    android:orientation="vertical"    tools:context="com.example.myapp.MainActivity">    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="设置闹钟(一次)"        android:onClick="setAlarmOne"        />    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:onClick="setAlarmCycle"        android:text="设置闹钟(周期)" />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="取消周期闹钟"        android:onClick="cancelAlarmCycle"        /></LinearLayout>

MainActivity.java

package com.example.myapp;import android.app.AlarmManager;import android.app.PendingIntent;import android.app.TimePickerDialog;import android.content.Context;import android.content.Intent;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.TimePicker;import java.util.Calendar;public class MainActivity extends AppCompatActivity {    private PendingIntent pendingIntent;    private AlarmManager alarmManager;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //实例化闹钟管理器        alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);    }    //设置闹钟(一次)    public void setAlarmOne(View view){        //获取系统当前时间        //获取当前系统的时间        Calendar calendar=Calendar.getInstance();        int hour=calendar.get(Calendar.HOUR_OF_DAY);        int minute=calendar.get(Calendar.MINUTE);        //弹出时间对话框        TimePickerDialog timePickerDialog=new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {            @Override            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {            //2 确定选择好的时间 hourOfDay   minut                Calendar c=Calendar.getInstance();                c.set(Calendar.HOUR_OF_DAY,hourOfDay);                c.set(Calendar.MINUTE,minute);                //04.时间一到，执行相对应的操作                Intent  intent=new Intent();                intent.setAction("com.example.myapp.RING");                PendingIntent pendingIntent=PendingIntent.getBroadcast(MainActivity.this,0x101,intent,0);                //03.设置闹钟                alarmManager.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);                  }        },hour,minute,true);        timePickerDialog.show();    }    //设置闹钟(周期)    public void setAlarmCycle(View view){        //获取当前系统的时间        Calendar calendar=Calendar.getInstance();        int hour=calendar.get(Calendar.HOUR_OF_DAY);        int minute=calendar.get(Calendar.MINUTE);        //01.弹出时间对话框（选择时间）        TimePickerDialog timePickerDialog=new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {            @Override            public void onTimeSet(TimePicker timePicker, int i, int i1) {                //02.确定选择好的时间  i  i1                Calendar c=Calendar.getInstance();                c.set(Calendar.HOUR_OF_DAY,i);                c.set(Calendar.MINUTE,i1);                //04.时间一到，执行相对应的操作                Intent  intent=new Intent();                intent.setAction("com.example.myapp.RING");                pendingIntent = PendingIntent.getBroadcast(MainActivity.this,0x102,intent,0);                //03.设置闹钟(周期)                alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),5000, pendingIntent);            }        },hour,minute,true);        timePickerDialog.show();    }    ///取消闹钟    public void cancelAlarmCycle(View view){        alarmManager.cancel(pendingIntent);    }}

activity_ring.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_ring"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="com.example.myapp.RingActivity">    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="you are my love!!!"        android:textSize="30sp"        />    <AnalogClock        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:id="@+id/analogClock" />    <Button        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="停止"        android:onClick="stop"        /></LinearLayout>

RingActivity.java

package com.example.myapp;import android.app.Notification;import android.app.NotificationManager;import android.content.Context;import android.media.MediaPlayer;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.support.v7.app.NotificationCompat;import android.view.View;public class RingActivity extends AppCompatActivity {    private MediaPlayer mediaPlayer;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_ring);        //播放音乐        mediaPlayer = MediaPlayer.create(this, R.raw.yang);        mediaPlayer.start();        //实例化通知管理器        NotificationManager notificationManager=(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);        //实例化通知        NotificationCompat.Builder builder=new NotificationCompat.Builder(this);        builder.setDefaults(NotificationCompat.DEFAULT_ALL);        builder.setContentTitle("闹钟响了");        builder.setSmallIcon(android.R.drawable.ic_lock_idle_alarm);        builder.setContentText("记得在早上9点之前吃早餐哦");        Notification notification=builder.build();        //发送通知        notificationManager.notify(0x103,notification);    }    public void stop(View view){        mediaPlayer.stop();        finish();    }}

广播
RingReceived.java

package com.example.myapp;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.os.Handler;import android.util.Log;/** * Created by Administrator on 2017/2/22. */public class RingReceived extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        if ("com.example.myapp.RING".equals(intent.getAction())){            Log.i("test","闹钟响了");            //跳转到Activity            Intent intent1=new Intent(context,RingActivity.class);            //广播跳转到activity.必须给intent设置标志位flags            intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);            context.startActivity(intent1);        }    }}注意音乐时放在raw中

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