ANDROID - Failed to find provider info for Calendar, Unknown URL content://calendar/events

gistfile1.java

funtcion Uri getCalendarURI(eventUri boolean){
Uri calendarURI = null;

    if (android.os.Build.VERSION.SDK_INT <= 7 )
    {
         calendarURI = (eventUri)?Uri.parse("content://calendar/events"):Uri.parse("content://calendar/calendars");
    }
    else
        {
        calendarURI = (eventUri)?Uri.parse("content://com.android.calendar/events"): Uri.parse("content://com.android.calendar/calendars");
    } 
 return calendarURI; 
}