Cell Customization

[Jeff]

Is there a way to add a custom image to the background of an individual cell?  I was able to do this in iOS fairly easily by setting a custom delegate and overriding ViewForCellOfKind.

[Antony Jekov]

Hello Jeff,

Thank you for contacting the Android team!

We don't support custom picture backgrounds by design, but we have a bitmap element in the cells, which can be modified to fill the cell thus become the background. This would be an example code:

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

    final RadCalendarView calendarView = new RadCalendarView(this);
    calendarView.setAdapter(new Adapter(calendarView));
    calendarView.getAdapter().setStyle(CalendarStyles.materialLight(this));

    final Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.my_pic);
    calendarView.setCustomizationRule(new Procedure<CalendarCell>() {
        Calendar calendar = Calendar.getInstance();
        @Override
        public void apply(CalendarCell argument) {
            if (argument.getCellType() == CalendarCellType.Date) {
                calendar.setTimeInMillis(argument.getDate());
                if (calendar.get(Calendar.DATE) == 5) {
                    argument.setBitmap(bitmap);
                } else {
                    argument.setBitmap(null);
                }
            }
        }
    });

    setContentView(calendarView);
}

class Adapter extends CalendarAdapter {

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

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

    class Cell extends CalendarDayCell {

        public Cell(RadCalendarView owner) {
            super(owner);

            setBitmapPosition(CalendarElement.TOP | CalendarElement.LEFT);
        }

        @Override
        protected void onArrange() {
            super.onArrange();
            if (getBitmap() != null) {
                this.setBitmap(Bitmap.createBitmap(getBitmap(), 0, 0, getWidth(), getHeight()));
            }
        }
    }
}

Please let me know if this is what you meant and if it suits your needs.

Thank you for your time and all best!

Regards,
Antony Jekov
Telerik