Android monthview calendar- event custamization

[rincy]

Hi,

I want to customize event indication in month view,

1.If any event is scheduled on a day it has to show as a triangle on the corner(no need to indicate if it having multiple days).
2.when user select a day, event color has to change from blue to white.

Please help me out on this items.

[Antony Jekov]

Hello Rincy,

Thank you for contacting the Android team.

I made a simple implementation of the screenshot you provided. Here is the code to get you started:

private RadCalendarView calendarView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    this.calendarView = new RadCalendarView(this);
    this.calendarView.setAdapter(new CustomCalendarAdapter(this.calendarView));
    this.calendarView.getEventAdapter().setRenderer(new CustomEventRenderer(this));

    List<Event> events = new ArrayList<>();
    events.add(new Event("Event", Calendar.getInstance().getTimeInMillis(), Calendar.getInstance().getTimeInMillis() + 1));
    this.calendarView.getEventAdapter().setEvents(events);

    this.calendarView.getAdapter().setStyle(CalendarStyles.light(this));
    setContentView(this.calendarView);
}

private static class CustomCalendarAdapter extends CalendarAdapter {

    public CustomCalendarAdapter(RadCalendarView owner) {
        super(owner);
    }

    @Override
    protected CalendarDayCell generateCalendarDayCell() {
        return new CustomCalendarDayCell(this.owner);
    }
}

private static class CustomCalendarDayCell extends CalendarDayCell {

    public CustomCalendarDayCell(RadCalendarView owner) {
        super(owner);
    }

    @Override
    protected void drawEvents(Canvas canvas) {
        if (this.getEvents() != null && this.getEvents().size() > 0)
            this.owner.getEventAdapter().getRenderer().renderEvents(canvas, this);
    }
}

private static class CustomEventRenderer extends EventRenderer {

    private static final int COLOR_IDLE = Color.parseColor("#38b4db");
    private static final int COLOR_SELECTED = Color.parseColor("#ffffff");

    private float size;
    private Paint paint;

    public CustomEventRenderer(Context context) {
        super(context);

        this.size = Util.getDimen(TypedValue.COMPLEX_UNIT_DIP, 20);
        this.paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    }

    @Override
    public void renderEvents(Canvas canvas, CalendarDayCell cell) {
        Path path = new Path();
        path.moveTo(cell.getRight() - this.size, cell.getBottom());
        path.lineTo(cell.getRight(), cell.getBottom());
        path.lineTo(cell.getRight(), cell.getBottom() - this.size);
        path.close();

        if (cell.isSelected())
            this.paint.setColor(COLOR_SELECTED);
        else
            this.paint.setColor(COLOR_IDLE);

        canvas.drawPath(path, this.paint);
    }
}

This should be close to the desired result. Please let me know if you need some further assistance.

Thank you for your time and all best!

Regards,
Antony Jekov
Telerik