Card.java

package com.gc.materialdesign.views;

import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.GradientDrawable;
import android.graphics.drawable.LayerDrawable;
import android.util.AttributeSet;
import android.widget.TextView;

import com.gc.materialdesign.R;

public class Card extends CustomView {

	TextView textButton;

	int paddingTop, paddingBottom, paddingLeft, paddingRight;
	int backgroundColor = Color.parseColor("#FFFFFF");

	public Card(Context context, AttributeSet attrs) {
		super(context, attrs);
		setAttributes(attrs);
	}

	// Set atributtes of XML to View
	protected void setAttributes(AttributeSet attrs) {

		setBackgroundResource(R.drawable.background_button_rectangle);
		// Set background Color
		// Color by resource
		int bacgroundColor = attrs.getAttributeResourceValue(ANDROIDXML, "background", -1);
		if (bacgroundColor != -1) {
			setBackgroundColor(getResources().getColor(bacgroundColor));
		} else {
			// Color by hexadecimal
			String background = attrs.getAttributeValue(ANDROIDXML, "background");
			if (background != null)
				setBackgroundColor(Color.parseColor(background));
			else
				setBackgroundColor(this.backgroundColor);
		}
	}

	// Set color of background
	public void setBackgroundColor(int color) {
		this.backgroundColor = color;
		LayerDrawable layer = (LayerDrawable) getBackground();
		GradientDrawable shape = (GradientDrawable) layer.findDrawableByLayerId(R.id.shape_bacground);
		shape.setColor(backgroundColor);
	}

}