在特定日期和时间创建闹钟

Question

我想要在某个时间和日期获取闹钟或通知。我想能够在一个数组中的特定日期有多个警报。我不知道在哪里继续关有我的按钮工作的：

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    //Button button = (Button)findViewById(R.id.button1); 
    // button.setOnClickListener(this); 
    final CheckBox checkBox = (CheckBox) findViewById(R.id.checkBox1); 
    final Button button = (Button) findViewById(R.id.button1); 
    button.setOnClickListener(new View.OnClickListener() 
    { 
     public void onClick(View v) { 

      if (checkBox.isChecked()) { 



      } 

     } 

预先感谢您对我的帮助。

Answer 1

你会想用Alarm Manager

这tutorial是一个非常简单的例子，如何使用它。

另一个简单exmaple是将其分解成的

1. 的基本步骤创建活动
2. 创建一个BroadcastReceiver来处理该事件

编辑
要通知，请在接收到警报事件时修改广播接收器以创建通知。

Android Status Notification Documentation很好地显示了创建通知的基本步骤。

1. 获取对NotificationManager
2. 参考创建一个通知实例。然后，您可以定义图像，文本和时间，这也只是因为已经定义的告警事件中的当前时间cliked
3. 电话通知时，当熄灭
4. 定义通知的内容，如信息和意图发动

String ns = Context.NOTIFICATION_SERVICE; NotificationManager mNotificationManager =（NotificationManager）receiverContext.getSystemService（ns）;

Notification notification = new Notification(R.drawable.notification_icon, "Hello", System.currentTimeMillis()); 

CharSequence contentTitle = "My notification"; 
CharSequence contentText = "Hello World!"; 
Intent notificationIntent = new Intent(receiverContext, TargetActivity.class); 
PendingIntent contentIntent = PendingIntent.getActivity(receiverContext, 0, notificationIntent, 0); 

notification.setLatestEventInfo(receiverContext, contentTitle, contentText, contentIntent); 

private static final int notificationID = 1; 

mNotificationManager.notify(notificationID, notification); 

EDIT 2
Creating notification at specified time using Alarm Manager

Answer 2

你可以尝试这样的：

ArrayList<Calendar> alarmTimes = getAlarmTimes(); //Make your own function which returns alarm times as an array of Calendar type 

for(int i=0; i<alarmTimes.size(); i++) 
{ 
    Intent intent = new Intent(this, YourClass.class); 
    PendingIntent pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), requestCode, intent, PendingIntent.FLAG_UPDATE_CURRENT | Intent.FILL_IN_DATA); 
    AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE); 
    alarmManager.set(AlarmManager.RTC_WAKEUP, alarmTimes[i].getTimeInMillis(), pendingIntent); 
} 

如果你想独立处理每个报警，然后使用不同的requestCode每个报警。 另外，您可能想看看alarmManager.set（）函数中使用的不同标志。根据您的应用需求修改它们。

http://developer.android.com/reference/android/app/PendingIntent.html

你将不得不作出一个AlarmReceiver类，将处理任何你想做的事情时，报警熄灭（请务必在AndroidManifest添加这个类作为接收机）。如果你想与报警一起发送额外的信息，那么你用意图额外这样的：

intent.putExtra("info1", value1); 
intent.putExtra("info2", value2); 

其中INFO1是额外数据的名称，数值1，您发送的值。

希望这会有所帮助！

编辑：

ArrayList<Calendar> alarmTimes = new ArrayList<Calendar>(); 

Calendar calendar = Calendar.getInstance(); 
calendar.set(CALENDAR.MONTH, 7); 
calendar.set(CALENDAR.DAY_OF_MONTH, 17); 
calendar.set(CALENDAR.HOUR_OF_DAY, 13); 
calendar.set(CALENDAR.MINUTE, 0); 

alarmTimes.add(calendar); 

//Repeat the above code for all alarm times and then return array object 
return alarmTimes; 

Answer 3

Calendar cal = Calendar.getInstance(); //retrieves a calendar object w/ current time 
     cal.add(cal.MINUTE, 1); //adds 1 minute to current time 

    Intent alarmIntent = new Intent(this, CustomAlarmReceiver.class); 

    /* creates a new PendingIntent using the static variable eventID. 
    * using eventID allows you to create multiple events with the same code 
    * without a unique id the intent would just be updated with new extras each time its created 
    */ 
    PendingIntent pendingAlarm = PendingIntent.getBroadcast(this, eventID, alarmIntent, 
     PendingIntent.FLAG_UPDATE_CURRENT); 
    eventID+=1; 

    /* get the Alarm service and set the alarm with the time to go off and what to do when the 
    * alarm is received */ 
    AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE); 
    am.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), pendingAlarm); 
    Intent intent1=new Intent(getApplicationContext(),ListActivity.class); 
    startActivity(intent1); 
    intent1.putExtra("date", date); 
    intent1.putExtra("task", message); 
       }