哪种是在Android日历中引入数据的正确方法？

Question

我正在尝试制作日历，但我遇到了一些问题。我有我需要的所有信息，如日，月，小时等，但是当我尝试创建日历时，它说应用程序突然停止了。当我调试并查看LogCat时，返回的错误是：“无法找到日历的提供者信息”，它出现在Checkpoint2和Checkpoint3之间。

当我拥有所有信息时创建事件的代码是下一个：

    private void crear()
{
    Log.d("Crear Evento","Checkpoint 1");
    this.alarm = 1; //ALARMA!!!!
    Calendar cal = new GregorianCalendar(this.anyo,this.mes,this.dia,this.hora,this.minutos,0);
    long startTime = cal.getTimeInMillis();
    long endTime = startTime+3600000;
    ContentResolver contentResolver = this.getContentResolver();
    ContentValues event = new ContentValues();
    Log.d("Crear Evento","Checkpoint 2");
    Uri eventsUri = Uri.parse(getCalendarUriBase(this)+"events");

    Cursor cursor = contentResolver.query(Uri.parse(getCalendarUriBase(this) ),new String[] { "calendar_id", "displayname" }, null,null, null);
    Log.d("Crear Evento","Checkpoint 3");
    cursor.moveToFirst();
    // fetching calendars name
    String CNames[] = new String[cursor.getCount()];
    // fetching calendars id
    int[] CalIds = new int[cursor.getCount()];
    Log.d("Crear Evento","Checkpoint 4");
    for (int i = 0; i < CNames.length; i++) {
        CalIds[i] = cursor.getInt(0);
        CNames[i] = cursor.getString(1);
        cursor.moveToNext();
    }
    Log.d("Crear Evento","Cálculos previos sin problemas");
    event.put("calendar_id", String.valueOf(CalIds[0]));
    event.put("title", this.titulo);
    event.put("description", this.descripcion);
    event.put("eventLocation", this.lugar);
    event.put("allDay", 0);
    event.put("eventStatus", 1);
    event.put("transparency", 0);
    event.put("dtstart", startTime);
    event.put("dtend", endTime);
    event.put("hasAlarm", this.alarm);
    try{
        contentResolver.insert(eventsUri, event);
    }catch(Exception e){
        e.printStackTrace();
    }
    Log.d("Crear Evento", "¡Guardado sin problemas!");
}