public static void SetTheme(CheckBox checkBox, FlatTheme theme,
FlatUI.FlatFontFamily fontFamily, FlatUI.FlatFontWeight fontWeight, int radius, int size, int border)
{
// creating unchecked-enabled state drawable
GradientDrawable uncheckedEnabled = new GradientDrawable();
uncheckedEnabled.SetCornerRadius(radius);
uncheckedEnabled.SetSize(size, size);
uncheckedEnabled.SetColor(Color.Transparent);
uncheckedEnabled.SetStroke(border, theme.LightAccentColor);
// creating checked-enabled state drawable
GradientDrawable checkedOutside = new GradientDrawable();
checkedOutside.SetCornerRadius(radius);
checkedOutside.SetSize(size, size);
checkedOutside.SetColor(Color.Transparent);
checkedOutside.SetStroke(border, theme.LightAccentColor);
PaintDrawable checkedCore = new PaintDrawable(theme.LightAccentColor);
checkedCore.SetCornerRadius(radius);
checkedCore.SetIntrinsicHeight(size);
checkedCore.SetIntrinsicWidth(size);
InsetDrawable checkedInside = new InsetDrawable(checkedCore, border + 2, border + 2, border + 2, border + 2);
Drawable[] checkedEnabledDrawable = {checkedOutside, checkedInside};
LayerDrawable checkedEnabled = new LayerDrawable(checkedEnabledDrawable);
// creating unchecked-enabled state drawable
GradientDrawable uncheckedDisabled = new GradientDrawable();
uncheckedDisabled.SetCornerRadius(radius);
uncheckedDisabled.SetSize(size, size);
uncheckedDisabled.SetColor(Color.Transparent);
uncheckedDisabled.SetStroke(border, theme.VeryLightAccentColor);
// creating checked-disabled state drawable
GradientDrawable checkedOutsideDisabled = new GradientDrawable();
checkedOutsideDisabled.SetCornerRadius(radius);
checkedOutsideDisabled.SetSize(size, size);
checkedOutsideDisabled.SetColor(Color.Transparent);
checkedOutsideDisabled.SetStroke(border, theme.VeryLightAccentColor);
PaintDrawable checkedCoreDisabled = new PaintDrawable(theme.VeryLightAccentColor);
checkedCoreDisabled.SetCornerRadius(radius);
checkedCoreDisabled.SetIntrinsicHeight(size);
checkedCoreDisabled.SetIntrinsicWidth(size);
InsetDrawable checkedInsideDisabled = new InsetDrawable(checkedCoreDisabled, border + 2, border + 2, border + 2, border + 2);
Drawable[] checkedDisabledDrawable = {checkedOutsideDisabled, checkedInsideDisabled};
LayerDrawable checkedDisabled = new LayerDrawable(checkedDisabledDrawable);
StateListDrawable states = new StateListDrawable();
states.AddState(new int[]{-Android.Resource.Attribute.StateChecked, Android.Resource.Attribute.StateEnabled}, uncheckedEnabled);
states.AddState(new int[]{Android.Resource.Attribute.StateChecked, Android.Resource.Attribute.StateEnabled}, checkedEnabled);
states.AddState(new int[]{-Android.Resource.Attribute.StateChecked, -Android.Resource.Attribute.StateEnabled}, uncheckedDisabled);
states.AddState(new int[]{Android.Resource.Attribute.StateChecked, -Android.Resource.Attribute.StateEnabled}, checkedDisabled);
checkBox.SetButtonDrawable(states);
// setting padding for avoiding text to be appear on icon
checkBox.SetPadding(size / 4 * 5, 0, 0, 0);
checkBox.SetTextColor(theme.LightAccentColor);
var typeface = FlatUI.GetFont(checkBox.Context, fontFamily, fontWeight);
if (typeface != null)
checkBox.SetTypeface(typeface, TypefaceStyle.Normal);
}