CollapsingToolbarLayout-Example

A very SIMPLE example shows how collapsing tool bar layout works.

##Library:
# material librarys compile 'com.android.support:appcompat-v7:22.2.0' compile 'com.android.support:design:22.2.0'
# view binder
compile 'com.jakewharton:butterknife:7.0.1'

Layout File

  <?xml version="1.0" encoding="utf-8"?>
  <android.support.design.widget.CoordinatorLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:fitsSystemWindows="true"
style="@style/Theme.AppCompat.Light.NoActionBar">
  <android.support.design.widget.AppBarLayout
        android:layout_height="192dp"
        android:layout_width="match_parent"
       xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:app="http://schemas.android.com/apk/res-auto"
       android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<!-- contentScrim is used for -->
    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsingToolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
       app:contentScrim="?attr/colorPrimary"
       app:layout_scrollFlags="scroll|exitUntilCollapsed">

    <ImageView
        android:id="@+id/toolbar_background"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:src="@drawable/squirrel"
        android:scaleType="centerCrop"
        android:fitsSystemWindows="true"
        app:layout_collapseMode="parallax" />

       <android.support.v7.widget.Toolbar
          android:id="@+id/toolbar"
          android:layout_width="match_parent"
          android:layout_height="?attr/actionBarSize"
          app:layout_collapseMode="pin"
         android:layout_gravity="right|bottom"
         app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>

    </android.support.design.widget.CollapsingToolbarLayout>

  </android.support.design.widget.AppBarLayout>
      <android.support.v4.widget.NestedScrollView
         android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:fitsSystemWindows="true"
         app:layout_behavior="@string/appbar_scrolling_view_behavior">
      <LinearLayout
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:orientation="vertical">
          <TextView
             android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:text="@string/description"
              android:layout_gravity="fill_vertical"
              android:maxEms="8"
              android:textStyle="bold"
              android:textSize="18dp"/>
        </LinearLayout>
   </android.support.v4.widget.NestedScrollView>
  </android.support.design.widget.CoordinatorLayout>