Setting Background Drawable with Material Button

gistfile1.java

public BaseButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        
        TypedArray a = context.getTheme().obtainStyledAttributes(
                attrs,
                R.styleable.MaterialButton,
                0, 0);

        try {
          colorButtonNormal = a.getInteger(R.styleable.MaterialButton_mbColorButtonNormal, Color.CYAN);
        } finally {
            a.recycle();
        }

        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){
            RippleDrawable draw = (RippleDrawable) getContext().getApplicationContext().getResources().getDrawable(R.drawable.raised_btn);
            InsetDrawable inset = (InsetDrawable) draw.getDrawable(0);
            GradientDrawable shape = (GradientDrawable) inset.getDrawable();
            shape.setColor(colorButtonNormal);
            setBackground(draw);
        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT){
            InsetDrawable draw = (InsetDrawable) getContext().getApplicationContext().getResources().getDrawable(R.drawable.raised_btn);
            GradientDrawable shape = (GradientDrawable) draw.getDrawable();
            shape.setColor(colorButtonNormal);
            setBackground(draw);
        } else {
          //todo
        }

    }