Android comparing current date to date in parse for query

Question

I am attempting to compare the current date and time with a date and time in parse. I would like the query to only return the events that have not closed for their registering period which would be their "end" date. But for some reason my parameters are not working the code is the following:

String currentDateTimeString = DateFormat.getDateTimeInstance().format(new Date());// gets current date and time


    query.whereGreaterThanOrEqualTo("end", currentDateTimeString);// should compare the dates and if the end date is past the current moment and time of this query not display that event

Answer 1

just use Date indeed if a String. the Parse Date Col. are comparable to Date.

query.whereGreaterThanOrEqualTo("end", new Date());

Answer 2

You can use Joda Time library. See the example below

LocalDate startDate = new LocalDate(2014, 1, 2);
LocalDateTime startDateTime = new LocalDateTime(2014, 1, 2, 14, 0);
LocalDate forCompare = startDateTime.toLocalDate();
System.out.println("equal dates: " + forCompare.equals(startDate));

Answer 3

Try something like this. Send the DateChecker function a date and if that date is before the the current date return true. If it is not return false.

public bool DateChecker(DateTime dt){
    if(DateTime.Now.Day<=dt.Day && DateTime.Now.Month<=dt.Month && DateTime.Now.Year<=dt.Year)){
        return true;
    }
    else{
        return false;
    }
}
//BELOW CODE GOES IN A DIFFERENT FUNCTION
DateTime? dt;
var yourQuery = ParseObject.GetQuery ("YourClass");
yourQuery.FindAsync ().ContinueWith (task => {
if(!task.IsCompleted){
    return;
}
if(task.IsCompleted){
    IEnumerable<ParseObject> results = task.Result;
    foreach(ParseObject result in results){
        string oid = "";
        if(result.ObjectId!=null){
            oid = result.ObjectId;
        }else{
            oid = "1337";
        }
        dt = result.("YourDateColumn in parse");
        DateTime tmpDate;
        tmpDate = dt ?? DateTime.Now;
        if (tmpDate.Year == DateTime.Now.Year && tmpDate.Month == DateTime.Now.Month && DateChecker (tmpDate)) {
            //adds items for this time period only
        }
    }
}

});