特定日期的Android通知 [英] Android notification at specific date

问题描述

我必须做一个应用程序，我必须设置一个日期，在特定的日期在9点我必须做一个通知。什么是最简单的方法？（我想让应用程序工作，即使我重新启动我的手机，或拿出我的电池，是AlarmManager一个解决方案？）

解决方案

要安排一个Action，您可以使用AlarmManager

尝试此代码对我有用：

1 /声明BroadcastReceiver CLASS启动Action，此类可以在您的活动内部或其他Java文件中。

 public class Receiver extends BroadcastReceiver {
 
 @Override 
 public void onReceive（Context context，Intent intent）{
 // TODO自动生成的方法stub 
 Toast.makeText（context，intent.getStringExtra（param），Toast.LENGTH_SHORT）.show（）; 
} 
 
} 
  

2 /在你的Oncreate方法放此代码

  AlarmManager alerts =（AlarmManager）this.getSystemService（Context.ALARM_SERVICE）; 
 
接收器接收器=新的接收器（）; 
 IntentFilter filter = new IntentFilter（ALARM_ACTION）; 
 registerReceiver（receiver，filter）; 
 
 Intent intent = new Intent（ALARM_ACTION）; 
 intent.putExtra（param，我的预定动作）; 
 PendingIntent operation = PendingIntent.getBroadcast（this，0，intent，0）; 
 //我选择3s后我的应用程序启动
 alerts.set（AlarmManager.RTC_WAKEUP，System.currentTimeMillis（）+ 3000，操作）; 
  

启动你的应用程序一个Toast将在3秒后出现，所以你可以更改System.currentTimeMillis ）+3000你的醒来时间。

I have to do an app in wich i must set a date and at that specific date at 9 o'clock i must do a notification. What is the simplest method of doing that?(i want the app to work even if i reboot my phone, or take out my battery, is AlarmManager a solution?)

解决方案

To schedule an Action you can use the AlarmManager

Try this code it's work for me:

1 / Declare the BroadcastReceiver CLASS to launch the Action, this class can be inside your activity or outside in an other java file

public class Receiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub
        Toast.makeText(context, intent.getStringExtra("param"),Toast.LENGTH_SHORT).show();
    }

}

2/ Inside your Oncreate Method put this code

AlarmManager alarms = (AlarmManager)this.getSystemService(Context.ALARM_SERVICE);

    Receiver receiver = new Receiver();
    IntentFilter filter = new IntentFilter("ALARM_ACTION");
    registerReceiver(receiver, filter);

    Intent intent = new Intent("ALARM_ACTION");
    intent.putExtra("param", "My scheduled action");
    PendingIntent operation = PendingIntent.getBroadcast(this, 0, intent, 0);
    // I choose 3s after the launch of my application
    alarms.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+3000, operation) ;   

Launch your App a Toast will be appeared after 3 seconds, So you can change "System.currentTimeMillis()+3000" with your wake up time.

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