Remove events

[JHNBOS]

Hello everyone,

If i would like to remove an event, how should i do this?

Thanks

[lolobosse]

Remove it from the list you provided in the onMonthChange and call notifyDataSetChanged

[JHNBOS]

You mean something like this? I put this in the onEventClick method.

events.remove(event); mWeekView.notifyDatasetChanged();

when i click on an event is gives a NullpointerException

[lolobosse]

Is your view already populated? events seems to be null

[entropitor]

Indeed. either events or mWeekView is null.

[JHNBOS]

Well, the date of the events are pulled from a database and are used to create the events. I got an arraylist where i put this data in and then use that data to create an event.

[entropitor]

If you get a NullPointerException, either events or mWeekView is null (or the error is in code that you're not showing)

[lolobosse]

Show the code, it'll much easier :smile:

[JHNBOS]

package nl.mad_world.chilltime;

/**

• Created by Johan on 19-6-2015. */

import android.content.Intent; import android.graphics.RectF; import android.os.Bundle; import android.support.v7.app.ActionBarActivity; import android.util.Log; import android.util.TypedValue; import android.view.Menu; import android.view.MenuItem; import android.widget.Toast;

import com.alamkanak.weekview.DateTimeInterpreter; import com.alamkanak.weekview.WeekView; import com.alamkanak.weekview.WeekViewEvent; import com.parse.FindCallback; import com.parse.ParseException; import com.parse.ParseObject; import com.parse.ParseQuery;

import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.List; import java.util.TimeZone;

public class WeekViewer extends ActionBarActivity implements WeekView.MonthChangeListener, WeekView.EventClickListener, WeekView.EventLongPressListener, WeekView.ScrollListener {

private static final int TYPE_DAY_VIEW = 1;
private static final int TYPE_THREE_DAY_VIEW = 2;
private static final int TYPE_WEEK_VIEW = 3;
public ArrayList<ParseObject> activityArray = new ArrayList<>();
private int mWeekViewType = TYPE_THREE_DAY_VIEW;
private WeekView mWeekView;
public List<WeekViewEvent> events;

public void getData() {
    //METHOD OM ALLE EVENTS VAN PARSE.COM OP TE HALEN EN ZET DEZE IN EEN ARRAYLIST.
    Intent getGroup = getIntent();
    String select = getGroup.getExtras().getString("selectedGroup");

    ParseQuery<ParseObject> query = ParseQuery.getQuery("Event");
    query.whereExists("Title");
    query.whereEqualTo("Group", select);
    query.findInBackground(new FindCallback<ParseObject>() {
        public void done(List<ParseObject> List, ParseException e) {
            try {
                if (e == null) {

                    Log.d("Afspraak", "Opgehaald " + List.size() + " afspraken");

                    for (int i = 0; i < List.size(); i++) {
                        activityArray.add(List.get(i));
                    }

                } else {
                    Log.d("Afspraken", "Error: " + e.getMessage());
                }
            } catch (Exception t) {
                Toast.makeText(getApplicationContext(),
                        "Kan geen afspraken ophalen!", Toast.LENGTH_LONG).show();
            }
        }
    });
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.weekview);

    // ELEMENT INSTELLEN IN XML
    mWeekView = (WeekView) findViewById(R.id.weekView);

    // ALS JE OP EVENT CLICKT KRIJG JE EEN TOAST.
    mWeekView.setOnEventClickListener(this);

    // The week view has infinite scrolling horizontally. We have to provide the events of a
    // month every time the month changes on the week view.
    mWeekView.setMonthChangeListener(this);

    // Set long press listener for events.
    mWeekView.setEventLongPressListener(this);

    mWeekView.setScrollListener(this);

    // Set up a date time interpreter to interpret how the date and time will be formatted in
    // the week view. This is optional.
    setupDateTimeInterpreter(true);

    getData();

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.week, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    setupDateTimeInterpreter(id == R.id.action_week_view);
    switch (id) {
        case R.id.eventcreate:

            Intent getSel = getIntent();
            String selected = getSel.getExtras().getString("selectedGroup");

            Intent createEvent = new Intent(this, Event.class);
            createEvent.putExtra("Groups", selected);
            startActivity(createEvent);
            return true;

        case R.id.action_today:
            mWeekView.goToToday();
            return true;
        case R.id.action_day_view:
            if (mWeekViewType != TYPE_DAY_VIEW) {
                item.setChecked(!item.isChecked());
                mWeekViewType = TYPE_DAY_VIEW;
                mWeekView.setNumberOfVisibleDays(1);

                // Lets change some dimensions to best fit the view.
                mWeekView.setColumnGap((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, getResources().getDisplayMetrics()));
                mWeekView.setTextSize((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 12, getResources().getDisplayMetrics()));
                mWeekView.setEventTextSize((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 12, getResources().getDisplayMetrics()));
            }
            return true;

        case R.id.action_three_day_view:
            if (mWeekViewType != TYPE_THREE_DAY_VIEW) {
                item.setChecked(!item.isChecked());
                mWeekViewType = TYPE_THREE_DAY_VIEW;
                mWeekView.setNumberOfVisibleDays(3);

                // Lets change some dimensions to best fit the view.
                mWeekView.setColumnGap((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, getResources().getDisplayMetrics()));
                mWeekView.setTextSize((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 12, getResources().getDisplayMetrics()));
                mWeekView.setEventTextSize((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 12, getResources().getDisplayMetrics()));
            }
            return true;
        case R.id.action_week_view:
            if (mWeekViewType != TYPE_WEEK_VIEW) {
                item.setChecked(!item.isChecked());
                mWeekViewType = TYPE_WEEK_VIEW;
                mWeekView.setNumberOfVisibleDays(7);

                // Lets change some dimensions to best fit the view.
                mWeekView.setColumnGap((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 2, getResources().getDisplayMetrics()));
                mWeekView.setTextSize((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 10, getResources().getDisplayMetrics()));
                mWeekView.setEventTextSize((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 10, getResources().getDisplayMetrics()));
            }
            return true;
    }

    return super.onOptionsItemSelected(item);
}

/**
 * Set up a date time interpreter which will show short date values when in week view and long
 * date values otherwise.
 *
 * @param shortDate True if the date values should be short.
 */
private void setupDateTimeInterpreter(final boolean shortDate) {
    mWeekView.setDateTimeInterpreter(new DateTimeInterpreter() {
        @Override
        public String interpretDate(Calendar date) {
            SimpleDateFormat weekdayNameFormat = new SimpleDateFormat("EEEE");
            String weekday = weekdayNameFormat.format(date.getTime());
            SimpleDateFormat format = new SimpleDateFormat("dd MMMM");

            // All android api level do not have a standard way of getting the first letter of
            // the week day name. Hence we get the first char programmatically.
            // Details: http://stackoverflow.com/questions/16959502/get-one-letter-abbreviation-of-week-day-of-a-date-in-java#answer-16959657

            return weekday + " " + format.format(date.getTime());
        }

        @Override
        public String interpretTime(int hour) {
            if (hour == 24) hour = 0;
            if (hour == 0) hour = 0;
            return hour + ":00";
        }
    });
}

@Override
public List<WeekViewEvent> onMonthChange(int newYear, int newMonth) {
    // Populate the week view with some events.
    List<WeekViewEvent> events = new ArrayList<>();

    //Create Event
    int num = 0;
    int id = 0;

    for (int i = 0; i < activityArray.size(); i++) {
        String Title = activityArray.get(i).get("Title").toString();
        Date Start = (Date) activityArray.get(i).get("StartDate");
        Date End = (Date) activityArray.get(i).get("EndDate");
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z");

        Calendar startTime = Calendar.getInstance(TimeZone.getTimeZone("CEST"));
        startTime.setTime(Start);

        Calendar endTime = (Calendar) startTime.clone();
        endTime.setTime(End);

        WeekViewEvent event = new WeekViewEvent(++id, Title, startTime, endTime);
        mWeekView.setDefaultEventColor(getResources().getColor(R.color.event_color_03));
        events.add(num++, event);
        mWeekView.notifyDatasetChanged();
    }

    mWeekView.notifyDatasetChanged();
    return events;

}

private String getEventTitle(Calendar time) {
    return String.format("Event of %02d:%02d %s/%d", time.get(Calendar.HOUR_OF_DAY), time.get(Calendar.MINUTE), time.get(Calendar.MONTH) + 1, time.get(Calendar.DAY_OF_MONTH));
}

@Override
public void onEventClick(WeekViewEvent event, RectF eventRect) {
        events.remove(event);
        mWeekView.notifyDatasetChanged();
}

@Override
public void onEventLongPress(WeekViewEvent ev, RectF eventRect) {
}

@Override
public void onFirstVisibleDayChanged(Calendar calendar, Calendar calendar1) {
    mWeekView.notifyDatasetChanged();
}

}

[lolobosse]

Try to change List<WeekViewEvent> events = new ArrayList<>(); to events = new ArrayList<>();

[entropitor]

@sachitkarki first of all, open a new issue for a new topic.

Second of all, there is already an issue for a constant number of days. It's currently not possible yet. Maybe in the future, but currently, you're best bet would be to implement it yourself.

[anitharaja]

How to display My list of names in the place of timings ?. You have displayed the Timings(12 AM to 11 PM), in that place I like to pass an array of values and those values to be replaced with the timings. Where and what should I do. Thanks in advance.

[JHNBOS]

Not sure how to do that, but I would have looked at the dateTimeInterpreter methode. Thats the methode where you can setup the output of the hours on the left. Maybe start there

[anitharaja]

Thanks for your time. Well, I have changed the return value as a static value. But the static value is displayed for 23 times (hours). But What I should get is, only the static value which I have passes should be displayed. The remaining 22 times should not be displayed.

I changed the return value in this "String interpretTime() " function. Please suggest me what am I missing. Thanks.