RelativeLayout with foreground like FrameLayout does.

attrs.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <declare-styleable name="FRelativeLayout">
        <attr name="foreground" format="reference|color" />
    </declare-styleable>

</resources>

FRelativeLayout.java

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.NinePatchDrawable;
import android.util.AttributeSet;
import android.widget.RelativeLayout;

public class FRelativeLayout extends RelativeLayout {

  private Drawable mForegroundSelector;
	private Rect mRectPadding;
	private boolean mUseBackgroundPadding = false;

	public FRelativeLayout(Context context) {
		super(context);
	}

	public FRelativeLayout(Context context, AttributeSet attrs) {
		this(context, attrs, 0);
	}

	public FRelativeLayout(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);

		TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.FRelativeLayout,
				defStyle, 0);

		final Drawable d = a.getDrawable(R.styleable.FRelativeLayout_foreground);
		if (d != null) {
			setForeground(d);
		}

		a.recycle();

		if (this.getBackground() instanceof NinePatchDrawable) {
			final NinePatchDrawable npd = (NinePatchDrawable) this.getBackground();
			if (npd != null) {
				mRectPadding = new Rect();
				if (npd.getPadding(mRectPadding)) {
					mUseBackgroundPadding = true;
				}
			}
		}
	}

	@Override
	protected void drawableStateChanged() {
		super.drawableStateChanged();

		if (mForegroundSelector != null && mForegroundSelector.isStateful()) {
			mForegroundSelector.setState(getDrawableState());
		}
	}

	@Override
	protected void onSizeChanged(int w, int h, int oldw, int oldh) {
		super.onSizeChanged(w, h, oldw, oldh);

		if (mForegroundSelector != null) {
			if (mUseBackgroundPadding) {
				mForegroundSelector.setBounds(mRectPadding.left, mRectPadding.top, w - mRectPadding.right, h - mRectPadding.bottom);
			} else {
				mForegroundSelector.setBounds(0, 0, w, h);
			}
		}
	}

	@Override
	protected void dispatchDraw(Canvas canvas) {
		super.dispatchDraw(canvas);

		if (mForegroundSelector != null) {
			mForegroundSelector.draw(canvas);
		}
	}

	@Override
	protected boolean verifyDrawable(Drawable who) {
		return super.verifyDrawable(who) || (who == mForegroundSelector);
	}

	@Override
	public void jumpDrawablesToCurrentState() {
		super.jumpDrawablesToCurrentState();
		if (mForegroundSelector != null) mForegroundSelector.jumpToCurrentState();
	}

	public void setForeground(Drawable drawable) {
		if (mForegroundSelector != drawable) {
			if (mForegroundSelector != null) {
				mForegroundSelector.setCallback(null);
				unscheduleDrawable(mForegroundSelector);
			}

			mForegroundSelector = drawable;

			if (drawable != null) {
				setWillNotDraw(false);
				drawable.setCallback(this);
				if (drawable.isStateful()) {
					drawable.setState(getDrawableState());
				}
			}  else {
				setWillNotDraw(true);
			}
			requestLayout();
			invalidate();
		}
	}
}

list_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"
        android:exitFadeDuration="200" >

    <item android:drawable="@drawable/list_selector_pressed" android:state_pressed="true"/> <!-- pressed -->
    <item android:drawable="@android:color/transparent"/> <!-- default -->

</selector>

list_selector_pressed.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="rectangle">

    <solid android:color="#7f0099cc" />

</shape>

Thank you for this useful code!!

Can you tell me which license is used for this source?

Happy coding! :)

To support Lollipop's ripples, you should add:

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    @Override
    public void drawableHotspotChanged(float x, float y) {
        super.drawableHotspotChanged(x, y);
        if (mForegroundSelector != null) {
            mForegroundSelector.setHotspot(x, y);
        }
    }