使用SQLite

Question

我想開發一個應用程序，但我面對的一個問題創建通知... 在我的應用我有像時針和分針以及一些其他的東西一些數據的數據庫，我想創建一個通知時間列。

我創建了這些代碼通知：

public void scheduleNotification(Notification notification, int hour, int minute) { 
    Intent notificationIntent = new Intent(getContext().getApplicationContext(), TaskReceiver.class); 
    notificationIntent.putExtra(TaskReceiver.NOTIFICATION_ID, 0); 
    notificationIntent.putExtra(TaskReceiver.NOTIFICATION, notification); 
    PendingIntent pendingIntent = PendingIntent.getBroadcast(getContext().getApplicationContext(), 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT); 

    Calendar calendar = Calendar.getInstance(); 
    calendar.set(Calendar.HOUR_OF_DAY, hour); 
    calendar.set(Calendar.MINUTE, minute); 
    calendar.set(Calendar.SECOND, 0); 
    AlarmManager alarmManager = (AlarmManager) getActivity().getSystemService(Context.ALARM_SERVICE); 
    alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent); 
} 

private Notification getNotification(String content) { 
    Notification.Builder builder = new Notification.Builder(getContext()); 
    builder.setContentTitle("Text Title"); 
    builder.setContentText("Some Text"); 
    builder.setSmallIcon(R.mipmap.ic_launcher); 
    builder.setAutoCancel(true); 
    builder.setVibrate(new long[]{1000, 1000, 1000}); 

    Intent intent = new Intent(getContext(), MainActivity.class); 
    PendingIntent pendingIntent = PendingIntent.getActivity(getContext(), 1, intent, Intent.FLAG_ACTIVITY_NEW_TASK); 
    builder.setContentIntent(pendingIntent); 
    return builder.build(); 
} 

，並調用它像活動：

Cursor c = dbManager.fetch(); 
    if(c != null){ 
     while (c.moveToNext()){ 
      int hour = c.getInt(c.getColumnIndex(DatabaseHelper.CLOCK_HOUR)); 
      int minute = c.getInt(c.getColumnIndex(DatabaseHelper.CLOCK_MINUTE)); 

      scheduleNotification(getNotification("Test"), hour, minute); 
     } 
    }else { 
     Toast.makeText(getContext(), "Cursor is empty", Toast.LENGTH_SHORT).show(); 
    } 

但它不工作，誰能幫助我？

Answer 1

問題解決了，如PPartisan如上所述，問題是的PendingIntent。 所以我改變scheduleNotification方法，現在它`做工精細： scheduleNotificaion方法：

public void scheduleNotification(int hour , int minute){ 
    Random random = new Random(); 
    int randomNumber = random.nextInt(500) + 20; 

    Calendar calendar = Calendar.getInstance(); 
    int curHour = calendar.get(Calendar.HOUR_OF_DAY); 
    int curMinute = calendar.get(Calendar.MINUTE); 

    int subHour = hour - curHour; 
    int subMinute = minute - curMinute; 

    if(subHour < 0){ 
     Toast.makeText(this, "Alarm hour Passed...", Toast.LENGTH_SHORT).show(); 
    } else if(subMinute < 0){ 
     Toast.makeText(this, "Alarm minute passed...", Toast.LENGTH_SHORT).show(); 
    } else { 
     Intent intent = new Intent(getApplicationContext(), NotificationReceiver.class); 
     PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), randomNumber, intent, Intent.FLAG_ACTIVITY_NEW_TASK); 
     AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE); 
     alarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + subHour * 60 * 60 * 1000 + subMinute * 60 * 1000, pendingIntent); 
    } 
} 

和onCreate方法：

if (listView.getAdapter().getCount() != 0){ 
     emptyText.setVisibility(View.GONE); 
     cursor.moveToFirst(); 
     int hour = cursor.getInt(cursor.getColumnIndex(DatabaseHelper.HOUR)); 
     int minute = cursor.getInt(cursor.getColumnIndex(DatabaseHelper.MINUTE)); 
     scheduleNotification(hour, minute); 
     while (cursor.moveToNext()){ 
      int hourNext = cursor.getInt(cursor.getColumnIndex(DatabaseHelper.HOUR)); 
      int minuteNext = cursor.getInt(cursor.getColumnIndex(DatabaseHelper.MINUTE)); 
      scheduleNotification(hourNext, minuteNext); 
     } 
    } else { 
     //what ever 
    } 

這只是簡單的改變讓自己瞭解的方式.. 感謝PPartisan ...