本文实例为大家分享了Alarmmanager实现简单闹钟功能的具体代码，供大家参考，具体内容如下

代码：

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="启动闹钟" android:id="@+id/button" android:onClick="startAlarmClick" android:layout_alignParentEnd="true" android:layout_alignParentStart="true" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="设置闹钟" android:id="@+id/button2" android:layout_below="@+id/button" android:onClick="startSetAlarmClick" android:layout_alignParentStart="true" android:layout_alignParentEnd="true" /> </RelativeLayout>

MainActivity.java

package com.example.haige.alarmmanager; import android.app.Activity;import android.app.AlarmManager;import android.app.PendingIntent;import android.content.Context;import android.content.Intent;import android.os.Bundle;import android.view.View;public class MainActivity extends Activity{ protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } public void startAlarmClick(View view) { //获取系统的闹钟服务 AlarmManager am= (AlarmManager) getSystemService(Context.ALARM_SERVICE); //触发闹钟的时间（毫秒） long triggerTime= System.currentTimeMillis()+3000; Intent intent=new Intent(this,Alarmctivity.class); PendingIntent op=PendingIntent.getActivity(this,0,intent,PendingIntent.FLAG_UPDATE_CURRENT); //启动一次只会执行一次的闹钟 am.set(AlarmManager.RTC,triggerTime,op);// //指定时间重复执行闹钟// am.setRepeating(AlarmManager.RTC,triggerTime,2000,op); } public void startSetAlarmClick(View view) { //获取系统的闹钟服务 AlarmManager am= (AlarmManager) getSystemService(Context.ALARM_SERVICE); //触发闹钟的时间（毫秒） long triggerTime= System.currentTimeMillis()+3000; Intent intent=new Intent(this,AlarmReceiver.class); PendingIntent op=PendingIntent.getBroadcast(this,0,intent,PendingIntent.FLAG_UPDATE_CURRENT); //启动一次只会执行一次的闹钟 am.set(AlarmManager.RTC,triggerTime,op);// //指定时间重复执行闹钟// am.setRepeating(AlarmManager.RTC,triggerTime,2000,op); }}

activity_alarmctivity.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" 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" tools:context="com.example.haige.alarmmanager.Alarmctivity"> </RelativeLayout>

Alarmctivity.java

package com.example.haige.alarmmanager; import android.app.Activity;import android.app.AlarmManager;import android.app.AlertDialog;import android.app.PendingIntent;import android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.media.MediaPlayer;import android.net.Uri;import android.os.Bundle;import java.io.IOException; public class Alarmctivity extends Activity{ MediaPlayer mp; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_alarmctivity); mp = new MediaPlayer(); try { mp.setDataSource(this, Uri.parse("/storage/sdcard1/kugou/听力/南拳妈妈-你不像她.mp3")); mp.prepare(); } catch (IOException e) { e.printStackTrace(); } mp.setLooping(true); mp.start(); alarmOialog(); } @Override protected void onResume() { super.onResume(); } @Override protected void onDestroy() { super.onDestroy(); if(mp!=null) { if(mp.isPlaying()) { mp.stop(); } mp.release(); } } public void alarmOialog() { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setMessage("大哥，大妹子喊你起床啦！"); builder.setPositiveButton("再来一次", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { alarm(); finish(); } }); builder.setNegativeButton("停止", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { finish();//关闭窗口 } }); builder.show(); } private void alarm() { //获取系统的闹钟服务 AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE); //触发闹钟的时间（毫秒） long triggerTime = System.currentTimeMillis() + 5000; Intent intent = new Intent(this, Alarmctivity.class); PendingIntent op = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT); //启动一次只会执行一次的闹钟 am.set(AlarmManager.RTC, triggerTime, op); //指定时间重复执行闹钟// am.setRepeating(AlarmManager.RTC,triggerTime,2000,op); } }

广播接收器AlarmReceiver.java

package com.example.haige.alarmmanager; import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.widget.Toast; public class AlarmReceiver extends BroadcastReceiver { public AlarmReceiver() { } @Override public void onReceive(Context context, Intent intent) { Toast.makeText(context,"起床啦，起床啦！",Toast.LENGTH_SHORT).show(); }}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。