Android - AlarmManager设置闹钟
尉迟越
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
<!--配置广播接收者-->
<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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