android值制作简易的闹钟和通知栏信息

1.制作一次性闹钟

2.制作周期闹钟

3.制作通知信息的弹出框

首先来一个闹钟思维导图吧

简单的思路：

设置（MainActivity）----------->广播接受者（RingReceiver）------------>响铃(RingActivity)---------->设置（MainAcitvity）

再来一个通知的思维导图

代码如下，里面有详解

 package com.example.cookie.android0723alarmone;

 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 am;
     private PendingIntent pendingIntent;
     private NotificationManager notificationManager;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         //获取闹钟管理器
         am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
         //获取通知管理器
         notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

     }

     public void setAlarm(View view){
         Calendar calendar=Calendar.getInstance();
         int hour=calendar.get(Calendar.HOUR_OF_DAY);
         int minute=calendar.get(Calendar.MINUTE);
         //1.弹出提示框
         TimePickerDialog timePickerDialog=new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {
             @Override
             public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                 //2.获取闹钟时间
                 Calendar c=Calendar.getInstance();
                 c.set(Calendar.HOUR_OF_DAY,hourOfDay);
                 c.set(Calendar.MINUTE,minute);
                 //3.设置闹钟
                 PendingIntent pendingIntent=PendingIntent.getBroadcast(MainActivity.this,0x101,new Intent("com.example.cookie.android0723alarmone.RING"),0);
                 am.set(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),pendingIntent);
             }
         },hour,minute,true);

 timePickerDialog.show();
     }

     public void setAlarmRepeat(View view){
         Calendar calendar=Calendar.getInstance();
         int hour=calendar.get(Calendar.HOUR_OF_DAY);
         int minute=calendar.get(Calendar.MINUTE);
         //1.弹出对话框
         TimePickerDialog timePickerDialog=new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {



             @Override
             public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                 //2.获取闹钟时间
                 Calendar c=Calendar.getInstance();
                 c.set(Calendar.HOUR_OF_DAY,hourOfDay);
                 c.set(Calendar.MINUTE,minute);
                 //3.设置闹钟
                 pendingIntent = PendingIntent.getBroadcast(MainActivity.this,0x101,new Intent("com.example.cookie.android0723alarmone.RING"),0);
                 am.setRepeating(AlarmManager.RTC_WAKEUP,c.getTimeInMillis(),5000, pendingIntent);

             }
         },hour,minute,true);

         timePickerDialog.show();

     }

     public void stopRepeat(View view){
         am.cancel(pendingIntent);
     }

     public void send(View view){
         //实例化通知
         NotificationCompat.Builder builder=new NotificationCompat.Builder(this);
         builder.setContentTitle("提示");
         builder.setContentText("恭喜您，中奖了，请先汇款给某某激活您的账号");
         //设置图标
         builder.setSmallIcon(android.R.drawable.star_on);
         //使用默认的闪光灯，铃声
         builder.setDefaults(NotificationCompat.DEFAULT_ALL);
         Notification notification=builder.build();
         //发送通知
         notificationManager.notify(0x101,notification);
     }

 }

RingReceiver广播接收者

 package com.example.cookie.android0723alarmone;

 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.util.Log;

 /**
  * Created by Administrator on 2017/7/23 0023.
  */

 public class RingReceiver extends BroadcastReceiver {

     @Override
     public void onReceive(Context context, Intent intent) {
         if ("com.example.cookie.android0723alarmone.RING".equals(intent.getAction())){
             Log.i("test","响铃了！！！");
             //跳转到activity中
             Intent intent2=new Intent(context,RingActivity.class);
             intent2.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             context.startActivity(intent2);
         }
     }
 }

RingActivity闹钟播放

 package com.example.cookie.android0723alarmone;

 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.util.Log;

 /**
  * Created by Administrator on 2017/7/23 0023.
  */

 public class RingReceiver extends BroadcastReceiver {

     @Override
     public void onReceive(Context context, Intent intent) {
         if ("com.example.cookie.android0723alarmone.RING".equals(intent.getAction())){
             Log.i("test","响铃了！！！");
             //跳转到activity中
             Intent intent2=new Intent(context,RingActivity.class);
             intent2.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             context.startActivity(intent2);
         }
     }
 }