在特定時間發送通知

Question

我有這個代碼發送通知。我從這裏的一個論壇複製過來！因此，此代碼表示在特定時間內發送通知，但我無法發送它，任何與我的代碼有關的問題？

Calendar calendar = Calendar.getInstance(); 
    calendar.set(Calendar.HOUR_OF_DAY, 17); 
    calendar.set(Calendar.MINUTE, 51); 
    calendar.set(Calendar.SECOND, 20); 
    Intent intent1 = new Intent(Testes.this, AlarmReceiver.class); 
    PendingIntent pendingIntent = PendingIntent.getBroadcast(Testes.this, 0,intent1, PendingIntent.FLAG_UPDATE_CURRENT); 
    AlarmManager am = (AlarmManager) Testes.this.getSystemService(Testes.this.ALARM_SERVICE); 
    am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent); 

AlarmReceiver.class：

public class AlarmReceiver extends BroadcastReceiver { 

    public static int MID = 0; 

    @Override 
    public void onReceive(Context context, Intent intent) { 
     // TODO Auto-generated method stub 

     long when = System.currentTimeMillis(); 
     NotificationManager notificationManager = (NotificationManager) context 
       .getSystemService(Context.NOTIFICATION_SERVICE); 

     Intent notificationIntent = new Intent(context, Testes.class); 
     notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 

     PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, 
       notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT); 


     Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); 

     NotificationCompat.Builder mNotifyBuilder = new NotificationCompat.Builder(
       context).setSmallIcon(R.drawable.grades_icon) 
       .setContentTitle("Alarm Fired") 
       .setContentText("Events To be PErformed").setSound(alarmSound) 
       .setAutoCancel(true).setWhen(when) 
       .setContentIntent(pendingIntent) 
       .setVibrate(new long[]{1000, 1000, 1000, 1000, 1000}); 
     notificationManager.notify(MID, mNotifyBuilder.build()); 
     MID++; 

    } 

} 

Answer 1

下面是工作得很好，我的報警代碼。

public class Alarm extends BroadcastReceiver { 
@Override 
public void onReceive(Context context, Intent intent) { 
    PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 
    PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, ""); 
    wl.acquire(); 

    Toast.makeText(context, "Alarm !!!!!!!!!!", Toast.LENGTH_LONG).show(); // For example 
    sendNotification("Alarm",context); 
    intent = new Intent(); 
    intent.setClass(context, AlarmActivity.class); //AlarmActivity is a dummy class name where to redirect 
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
    intent.putExtra("msg","Task Pending"); 
    context.startActivity(intent); 
    wl.release(); 
} 

sendNotification(String s,Context c)在下面給出。

private void sendNotification(String body,Context context) { 

     Intent intent = new Intent(context, WelcomeActivity.class); 
     intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
     PendingIntent pendingIntent = PendingIntent.getActivity(context, 0/*Request code*/, intent, PendingIntent.FLAG_ONE_SHOT); 
     //Set sound of notification 
     Uri notificationSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); 
     Bitmap icon = BitmapFactory.decodeResource(context.getResources(), 
       R.mipmap.ic_launcher_round); 

     NotificationCompat.Builder notifiBuilder = new NotificationCompat.Builder(context) 
       .setSmallIcon(R.mipmap.ic_launcher_round) 
       .setAutoCancel(true) 
       .setContentText("lalalalalala lalalalalal lalalalalalal lalalalaaa") 
       .setSound(notificationSound) 
       .setContentIntent(pendingIntent); 

     Notification not = notifiBuilder 
       .setContentTitle("The Big Notification") 
       .setContentText(body) 
       .setStyle(new NotificationCompat.BigPictureStyle(notifiBuilder) 
         .bigLargeIcon(icon)) 
       .build(); 

     NotificationManager notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE); 
     notificationManager.notify(123456 /*ID of notification*/, notifiBuilder.build()); 
    } 

然後在我的AlarmActivity中的代碼如下。

public class AlarmActivity extends AppCompatActivity { 

private Ringtone r; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    requestWindowFeature(Window.FEATURE_NO_TITLE); 
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN); 
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); 
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD); 
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON); 
    setContentView(R.layout.activity_alarm); 
    Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM); 
    r = RingtoneManager.getRingtone(this, notification); 
    r.play(); 

    ImageView buttonCancelAlarm = (ImageView) findViewById(R.id.buttonCancelAlarm); 

    buttonCancelAlarm.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      cancelAlarm(Test.this); 
      finish(); 
     } 
    }); 

} 
public void cancelAlarm(Context context) 
{ 
    r.stop(); 
    Intent intent = new Intent(context, Alarm.class); 
    PendingIntent sender = PendingIntent.getBroadcast(context, 12345, intent, 0); 
    AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); 
    alarmManager.cancel(sender); 
} 

，你可以通過這個function

public void setAlarm(Context context, long millisec) 
    { 
      Calendar calendar = Calendar.getInstance(); 
      calendar.set(Calendar.HOUR_OF_DAY, 17); 
      calendar.set(Calendar.MINUTE, 51); 
      calendar.set(Calendar.SECOND, 20); 
      AlarmManager am =(AlarmManager)context.getSystemService(Context.ALARM_SERVICE); 
      Intent i = new Intent(context, Alarm.class); 
      PendingIntent pi = PendingIntent.getBroadcast(context, 12345, i, PendingIntent.FLAG_CANCEL_CURRENT); 
      am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent); 
      Toast.makeText(context,"Alarm Saved!",Toast.LENGTH_SHORT).show(); 
     } 

我希望它可以幫助您添加報警。現在你可以添加你的日曆意圖，它會起作用。