public void addToUI(final Context con) {
        myactivity.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                MainFrame main = new MainFrame(con);
                main.backgroundColor(0, 82, 255, 0.5);

                MainFrame test = new MainFrame(con);
                test.backgroundColor(215, 255, 4, 1);
                test.parameters.height = 100;

                main.addView(test,test.parameters);
                myactivity.addContentView(main, main.parameters);
            }
        }
}

public class MainFrame extends FrameLayout {
        public FrameLayout.LayoutParams parameters = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT);
        public MainFrame(Context con) {
            this(con, null);
        }
        public MainFrame(Context context, AttributeSet attrs){
            this(context, attrs, 0);
        }
        public MainFrame(Context context, AttributeSet attrs, int defStyle){
            super(context, attrs, defStyle);
        }

        //This seams to keep have the same opacity as the parent
        public void backgroundColor(int red, int green, int blue, double alphaa) {
            this.setBackgroundColor(Color.rgb(red, green, blue));
            final AlphaAnimation alpha = new AlphaAnimation((float)alphaa, (float)alphaa);
            alpha.setDuration(0);
            alpha.setFillAfter(true);
            this.startAnimation(alpha);
            //this.animate().alpha((float)alphaa).setDuration(0).start();

        }

        public void backgroundColor(int red, int green, int blue) {
            this.setBackgroundColor(Color.rgb(red, green, blue));
        }


}