How to do the new PlayStore parallax effect

Google has recently announced Design support library and with this it has support for implementing Collapsing Toolbar.

In addition to pinning a view, you can use app:layout_collapseMode="parallax" (and optionally app:layout_collapseParallaxMultiplier="0.7" to set the parallax multiplier) to implement parallax scrolling (say of a sibling ImageView within the CollapsingToolbarLayout)

Example:

<android.support.design.widget.AppBarLayout        android:layout_height="192dp"        android:layout_width="match_parent">    <android.support.design.widget.CollapsingToolbarLayout            android:layout_width="match_parent"            android:layout_height="match_parent"            app:layout_scrollFlags="scroll|exitUntilCollapsed">        <android.support.v7.widget.Toolbar                android:layout_height="?attr/actionBarSize"                android:layout_width="match_parent"                app:layout_collapseMode="pin"/>        </android.support.design.widget.CollapsingToolbarLayout></android.support.design.widget.AppBarLayout>

You could try this (FadingActionBar library):https://github.com/ManuelPeinado/FadingActionBar

Try an example of this library on android: https://play.google.com/store/apps/details?id=com.manuelpeinado.fadingactionbar.demo

EDIT: Rather than third party library use this AppBarLayout and CollapsingToolbarLayout http://android-developers.blogspot.in/2015/05/android-design-support-library.html

try the ObservableScrollView library

https://github.com/ksoichiro/Android-ObservableScrollView

demo application from play store

https://play.google.com/store/apps/details?id=com.github.ksoichiro.android.observablescrollview.samples2

sample demo,