Android - AlarmManager设置闹钟

闹钟可以设置一次性的闹钟和定时循环的闹钟，下面分别分享给大家

设置闹钟时间的activity_alarm1.xml文件：

里面有设置一次闹钟按钮、周期闹钟按钮，取消周期闹钟按钮

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_alarm1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.zking.a24provider.Alarm1Activity"><Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="设置闹钟（一次）"
        android:onClick="alertAlarm"/><Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="设置闹钟（周期）"
        android:onClick="alertAlarmCycle"/><Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="取消周期闹钟"
        android:onClick="cancleCycle"/>
LinearLayout>

AlarmActivity文件代码：这里需要广播接收者来跳转Activity，周期闹钟需要点击取消周期闹钟才可停止

package com.zking.a24provider;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 Alarm1Activity extends AppCompatActivity {private AlarmManager alarmManager;private PendingIntent pendingIntent;@Override
    protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_alarm1);//获取闹钟管理者
        alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);}

    //设置闹钟一次
    public void alertAlarm(View view){//弹出时间对话框

//        获取当前系统时间设置在对话框中
        Calendar calendar=Calendar.getInstance();int hour=calendar.get(Calendar.HOUR_OF_DAY);int minute=calendar.get(Calendar.MINUTE);TimePickerDialog timePickerDialog=new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {@Override
            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {//得到闹钟距离设置时间的毫秒数
                Calendar c=Calendar.getInstance();c.set(Calendar.HOUR_OF_DAY,hourOfDay);c.set(Calendar.MINUTE,minute);Intent intent=new Intent();intent.setAction("com.zking.a24provider.RING");//将来时态的跳转
                pendingIntent = PendingIntent.getBroadcast(Alarm1Activity.this,0x101,intent,0);//设置一次闹钟
                alarmManager.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(), pendingIntent);//时间一到，发送广播（闹钟响了）
                // 广播接收者中（跳转Activity）
                // 唤醒页面，跳转Activity并播放音乐

            }},hour,minute,true);timePickerDialog.show();}

    //设置闹钟 周期
    public void alertAlarmCycle(View view){//弹出时间对话框

//        获取当前系统时间设置在对话框中
        Calendar calendar=Calendar.getInstance();int hour=calendar.get(Calendar.HOUR_OF_DAY);int minute=calendar.get(Calendar.MINUTE);TimePickerDialog timePickerDialog=new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {@Override
            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {//得到闹钟距离设置时间的毫秒数
                Calendar c=Calendar.getInstance();c.set(Calendar.HOUR_OF_DAY,hourOfDay);c.set(Calendar.MINUTE,minute);Intent intent=new Intent();intent.setAction("com.zking.a24provider.RING");//将来时态的跳转
                PendingIntent pendingIntent=PendingIntent.getBroadcast(Alarm1Activity.this,0x101,intent,0);//设置周期闹钟
                // 设置5秒后继续响，一般都是设置24小时后响，看个人需求
                alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),5000,pendingIntent);//时间一到，发送广播（闹钟响了）
                // 广播接收者中（跳转Activity）
                // 唤醒页面，跳转Activity并播放音乐

            }},hour,minute,true);timePickerDialog.show();}

    //取消周期闹钟
    public void cancleCycle(View view){alarmManager.cancel(pendingIntent);}
}

闹钟响起后跳转到的页面activity_ring.xml:

里面添加一些提示内容，还有停止闹钟按钮

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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.zking.a24provider.RingActivity"><TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="起床啦！"/><Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="停止"
        android:onClick="stop"/>
LinearLayout>

闹钟响起后的RingActivity：主要是用来播放音乐和停止闹钟
package com.zking.a24provider;import android.media.MediaPlayer;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
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);
	//这里的音乐文件是放在res下的raw里mediaPlayer = MediaPlayer.create(this, R.raw.love);mediaPlayer.start();}//停止音乐
    public void stop(View view){mediaPlayer.stop();finish();}
}

广播接收者文件RingReceived：需要在清单文件里配置

<receiver android:name=".RingReceived"><intent-filter><action android:name="com.zking.a24provider.RING">action>intent-filter>
receiver>

package com.zking.a24provider;import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;


public class RingReceived extends BroadcastReceiver {@Override
    public void onReceive(Context context, Intent intent) {if("com.zking.a24provider.RING".equals(intent.getAction())){Log.i("text","闹钟响了");//跳转到Activity
            Intent intent1=new Intent(context,RingActivity.class);//需要给intent设置标志位，类似于把要跳转的activity放到activity栈中
            intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);context.startActivity(intent1);}}
}

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