android 设置闹钟及通知示例
简单说一下这次demo内容，首先做一个设置一次性闹钟，先得到alarmManager,打开一个时间对话框，在里面设置闹钟的时间，时间一到发送广播，然后广播接受者接到跳转到新的activity播放音乐。接着是一个反复闹钟，最后是一个简单的通知，具体代码如下：
importandroid.app.AlarmManager;
importandroid.app.Notification;
importandroid.app.NotificationManager;
importandroid.app.PendingIntent;
importandroid.app.TimePickerDialog;
importandroid.content.Context;
importandroid.content.Intent;
importandroid.support.v7.app.AppCompatActivity;
importandroid.os.Bundle;
importandroid.support.v7.app.NotificationCompat;
importandroid.view.View;
importandroid.widget.TimePicker;
importjava.util.Calendar;
publicclassMainActivityextendsAppCompatActivity{
privateAlarmManageralarmManager;
privatePendingIntentpendingIntent;
@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//获取闹钟管理者
alarmManager=(AlarmManager)getSystemService(Context.ALARM_SERVICE);
}
publicvoidsetAlarm(Viewview){
//获取当前系统的时间
Calendarcalendar=Calendar.getInstance();
inthour=calendar.get(Calendar.HOUR_OF_DAY);
intminute=calendar.get(Calendar.MINUTE);
//弹出时间对话框
TimePickerDialogtimePickerDialog=newTimePickerDialog(this,newTimePickerDialog.OnTimeSetListener(){
@Override
publicvoidonTimeSet(TimePickertimePicker,inti,inti1){
Calendarc=Calendar.getInstance();
c.set(Calendar.HOUR_OF_DAY,i);
c.set(Calendar.MINUTE,i1);
Intentintent=newIntent();
intent.setAction("com.zking.g150820_android28_alarm_notification.RING");
//将来时态的跳转angengingong
PendingIntentpendingIntent=PendingIntent.getBroadcast(MainActivity.this,0x101,intent,0);
//设置闹钟
alarmManager.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);
//时间一到，发送广播（闹钟响了）
//广播接受者中（跳转Activity）
//跳转Activity，在这个Activity中播放音乐
}
},hour,minute,true);
timePickerDialog.show();
}
publicvoidsetAlarmCycle(Viewview){
//获取当前系统的时间
Calendarcalendar=Calendar.getInstance();
inthour=calendar.get(Calendar.HOUR_OF_DAY);
intminute=calendar.get(Calendar.MINUTE);
//弹出时间对话框
TimePickerDialogtimePickerDialog=newTimePickerDialog(this,newTimePickerDialog.OnTimeSetListener(){
@Override
publicvoidonTimeSet(TimePickertimePicker,inti,inti1){
Calendarc=Calendar.getInstance();
c.set(Calendar.HOUR_OF_DAY,i);
c.set(Calendar.MINUTE,i1);
Intentintent=newIntent();
intent.setAction("com.zking.g150820_android28_alarm_notification.RING");
//将来时态的跳转angengingong
pendingIntent=PendingIntent.getBroadcast(MainActivity.this,0x101,intent,0);
//设置闹钟
//alarmManager.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);
//设置周期闹钟
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),5000,pendingIntent);
//时间一到，发送广播（闹钟响了）
//广播接受者中（跳转Activity）
//跳转Activity，在这个Activity中播放音乐
}
},hour,minute,true);
timePickerDialog.show();
}
publicvoidcancelCycle(Viewview){
alarmManager.cancel(pendingIntent);
}
publicvoidsendNotification(Viewview){
//实例化通知管理器
NotificationManagernotificationManager=(NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
//实例化通知
NotificationCompat.Builderbuilder=newNotificationCompat.Builder(this);
builder.setContentTitle("今日大事件");
builder.setContentText("骑士击败勇士夺冠");
builder.setDefaults(NotificationCompat.DEFAULT_ALL);
builder.setAutoCancel(true);
builder.setSmallIcon(android.R.drawable.ic_media_play);
builder.setContentIntent(PendingIntent.getActivity(this,0x102,newIntent(this,RingActivity.class),0));
Notificationnotification=builder.build();
//发送通知
notificationManager.notify(0x101,notification);
}
}
布局文件(xml)：
<LinearLayoutxmlns: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: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="ghq.zking.com.ghq_android_28.MainActivity"> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="设置闹钟(一次)" android:onClick="setAlarm" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="设置闹钟(周期)" android:onClick="setAlarmCycle" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="取消周期" android:onClick="cancelCycle" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="发送通知" android:onClick="sendNotification" /> </LinearLayout>
广播接受者代码:
publicclassRingReceivedextendsBroadcastReceiver{
@Override
publicvoidonReceive(Contextcontext,Intentintent){
if("ghq.zking.com.ghq_android_28_alarm_notification.RING".equals(intent.getAction())){
//跳转到Activity
Intentintent1=newIntent(context,RingActivity.class);
//给Intent设置标志位
intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent1);
}
}
}
闹钟播放activity代码:
publicclassRingActivityextendsAppCompatActivity{
privateMediaPlayermediaPlayer;
@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ring);
mediaPlayer=MediaPlayer.create(this,R.raw.love);
mediaPlayer.start();
}
publicvoidstop(Viewview){
mediaPlayer.stop();
finish();
}
}
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毛票票。