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android 设置闹钟及通知示例

2019年07月24日  | 移动技术网移动技术  | 我要评论

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：

import android.app.alarmmanager;
import android.app.notification;
import android.app.notificationmanager;
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.support.v7.app.notificationcompat;
import android.view.view;
import android.widget.timepicker;

import java.util.calendar;

public class mainactivity extends appcompatactivity {

  private alarmmanager alarmmanager;
  private pendingintent pendingintent;

  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);

    //获取闹钟管理者
    alarmmanager = (alarmmanager) getsystemservice(context.alarm_service);
  }

  public void setalarm(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);


    //弹出时间对话框
    timepickerdialog timepickerdialog=new timepickerdialog(this, new timepickerdialog.ontimesetlistener() {
      @override
      public void ontimeset(timepicker timepicker, int i, int i1) {
        calendar c=calendar.getinstance();
        c.set(calendar.hour_of_day,i);
        c.set(calendar.minute,i1);


        intent intent=new intent();
        intent.setaction("com.zking.g150820_android28_alarm_notification.ring");

        //将来时态的跳转 ang eng ing ong
        pendingintent pendingintent=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();
  }

  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);


    //弹出时间对话框
    timepickerdialog timepickerdialog=new timepickerdialog(this, new timepickerdialog.ontimesetlistener() {
      @override
      public void ontimeset(timepicker timepicker, int i, int i1) {
        calendar c=calendar.getinstance();
        c.set(calendar.hour_of_day,i);
        c.set(calendar.minute,i1);


        intent intent=new intent();
        intent.setaction("com.zking.g150820_android28_alarm_notification.ring");

        //将来时态的跳转 ang eng ing ong
        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();
  }


  public void cancelcycle(view view){
    alarmmanager.cancel(pendingintent);
  }

  public void sendnotification(view view){
    //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.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,new intent(this,ringactivity.class),0));

    notification notification=builder.build();

    //发送通知
    notificationmanager.notify(0x101,notification);

  }

}

布局文件(xml)：

<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: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:

public class ringreceived extends broadcastreceiver {
  @override
  public void onreceive(context context, intent intent) {
    if ("ghq.zking.com.ghq_android_28_alarm_notification.ring".equals(intent.getaction())){
      //跳转到activity
      intent intent1=new intent(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:

public class ringactivity extends appcompatactivity {

  private mediaplayer mediaplayer;

  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_ring);
    mediaplayer = mediaplayer.create(this, r.raw.love);
    mediaplayer.start();
  }

  public void stop(view view){
    mediaplayer.stop();
    finish();
  }

}

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