I am trying to achieve a layout shown in the image.
So I would like to have two views that pin on top of the screen after the users scrolls to a certain point. Other views should collapse until they are fully hidden (except for View 3 which is basically the main view of the layout. So far I have tried a few approaches.
One, that kinda works, is to use the collapsing toolbar with Pinnable View 1 and Pinnable View 2 anchored to other views (I attached the snippet of the code so you know what I managed to achieve). The problem with this approach is that, because these pinnable views are not inside a nestedScrollView, it is impossible to scroll when user starts the scroll from these two views.
So my question is, is that possible to achieve the desired effect using my current approach or is there a way to do it differently?
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/app_bar_layout_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#null">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">
<View
android:id="#+id/view_1"
android:layout_width="match_parent"
android:layout_marginBottom="32dp"
android:layout_height="200dp"
android:background="#0071BD"
app:layout_collapseMode="parallax">
</View>
</com.google.android.material.appbar.CollapsingToolbarLayout>
</com.google.android.material.appbar.AppBarLayout>
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:layout_marginTop="32dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".ScrollingActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<View
android:id="#+id/view_2"
android:layout_width="wrap_content"
android:background="#5495BD"
android:layout_height="300dp"/>
<View
android:id="#+id/pinnable_view_2_anchor_view"
android:layout_width="match_parent"
android:layout_height="41dp"
android:background="#null" />
<View
android:id="#+id/view_3"
android:layout_width="match_parent"
android:background="#57B1BC"
android:layout_height="1000dp" />
</LinearLayout>
</androidx.core.widget.NestedScrollView>
<View
android:id="#+id/pinnable_view_1"
android:layout_width="match_parent"
android:layout_height="64dp"
android:background="#00015E"
android:nestedScrollingEnabled="true"
app:layout_anchor="#id/app_bar_layout_view"
app:layout_anchorGravity="bottom">
</View>
<View
android:id="#+id/pinnable_view_2"
android:layout_width="match_parent"
android:background="#000002"
android:layout_height="40dp"
android:layout_marginTop="64dp"
app:layout_anchor="#id/pinnable_view_2_anchor_view"
app:layout_anchorGravity="center">
</View>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
maybe it's too late, anyway, check code from here https://github.com/Y-E-P/DoubleCollapsingToolbar, maybe it will helps other developers, who faced with the same problem. I've prepared two example how to use it, free to use this code in your projects. Here is result below.
Enjoy!
Related
As we can see from the below sample, on changing the visibility of the view from gone to visible and vice versa, the appbar automatically expands and scrim drawn is shown as well.
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/crl_parent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white"
android:fillViewport="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/abl_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
app:contentScrim="#drawable/shape_rectangle_grdient_red_yellow"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_collapseMode="parallax">
<FrameLayout
android:id="#+id/fl_class"
android:layout_width="match_parent"
android:layout_height="#dimen/d_280dp"
android:background="#color/colorPlaceholderBg">
<ImageView
android:id="#+id/iv_class"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:scaleType="centerCrop"
android:src="#color/colorPlaceholderBg" />
<ProgressBar
android:id="#+id/pb_dp_progress"
android:layout_width="#dimen/d_20dp"
android:layout_height="#dimen/d_20dp"
android:layout_gravity="center"
android:visibility="visible" />
</FrameLayout>
<RelativeLayout
android:id="#+id/rl_toolbar"
android:layout_width="match_parent"
android:layout_height="#dimen/toolbar_default_height"
android:background="#drawable/shape_rectangle_transparent_grey_gradient">
<ImageView
android:id="#+id/iv_back"
... />
</RelativeLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/tl_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:minHeight="#dimen/toolbar_default_height"
android:visibility="visible"
app:contentInsetStart="#dimen/d_0dp"
app:layout_collapseMode="pin">
<include layout="#layout/view_toolbar" />
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/fragment_class_details_content" />
</android.support.design.widget.CoordinatorLayout>
This the code for the outer layout. As can be seen from the above layout that the pattern is mostly standard. I have tried replicating the bug in new sample but of no use. The initial problem seem to be changing the height of nested scroll view on runtime seems to be the problem but that is not the case. I tried to setExpand(false) on the click of the button but that is not working as well.
<img src="https://i.imgur.com/YGTT3oL.gif" title="source: imgur.com" />
Link to demo gif is here: https://i.imgur.com/YGTT3oL.gif
I bet the problem is caused by app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
You have to define the behavior you want when scrolling, check out this article: https://medium.com/martinomburajr/android-design-collapsing-toolbar-scrollflags-e1d8a05dcb02
Since I dont know what behaviour do you want, read the article and choose yourself. Hiding and showing the view is triggering those flags.
In your #layout/fragment_class_details_content check if
app:layout_behavior="#string/appbar_scrolling_view_behavior"
is present in the parent layout.
Also change app:layout_scrollFlags="scroll|exitUntilCollapsed|snap" to
app:layout_scrollFlags="scroll|exitUntilCollapsed"
Add this attribute to the CollapsingToolbarLayout
app:toolbarId="#+id/tl_toolbar"
Add this attribute to Toolbar:
app:popupTheme="#style/AppTheme.PopupOverlay"
Extract your gone/visible layout from android.support.design.widget.CollapsingToolbarLayout.
Too much nesting you did so avoid nesting and Use constraint layout
I am a Android newbie programmer and I am stuck with a UI problem. My goal is to achieve something closer to this:
desirable layout
I thought about it and I decided to do it with a CoordinatorLayout, AppBarLayout / CollapsingToolbarLayout and a NestedScrollView with a CardView. Sounds just fine for this problem, right?
With my actual XML I already have the toolbar, image and the scroll feature.
However, the scroll feature isn't 100% like I wanted. First of all, it's not possible to scroll down since around mid screen (probably because of android:layout_height="275dp"), it is only possible to scroll up. (and of course collapse the toolbar). My main goal is to "open" the image fullscreen. Do you have any idea how can I achieve this behaviour? Maybe controlling % in .java?
Also have one annoying bug, but I can leave with it for now, just try to help if it also gives you some OCD condition
I tried to add an transparent property to my LinearLayout but it didn't work.
Normal scroll:
Current scroll
Buggy 'panel' as it is close to collapse:
buggy panel image
My all XML:
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/annonce.main.coordinator"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:ignore="RtlHardcoded"
>
<android.support.design.widget.AppBarLayout
android:id="#+id/flexible.example.appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
>
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/flexible_example_collapsing"
android:layout_width="match_parent"
android:layout_height="275dp"
app:title="Mosteiro dos Jerónimos"
app:expandedTitleMarginBottom="94dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:expandedTitleTextAppearance="#style/CollapsingTextAppearance.Inverse"
app:contentScrim="?attr/colorPrimary"
>
<ImageView
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:src="#drawable/mosteiro_dos_jeronimos"
android:scaleType="centerCrop"
/>
<android.support.v7.widget.Toolbar
android:id="#+id/flexible.example.toolbar"
android:layout_width="match_parent"
android:layout_height="30dp"
android:background="#null"
app:layout_collapseMode="pin"
app:title="Mosteiro dos Jerónimos"
style="#style/ToolBarWithNavigationBack"
/>
</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:scrollbars="none"
app:behavior_overlapTop="78dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<android.support.v7.widget.CardView
android:id="#+id/flexible.example.cardview"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:contentPaddingBottom="16dp"
app:contentPaddingLeft="16dp"
app:contentPaddingRight="16dp"
app:cardCornerRadius="16dp"
app:cardBackgroundColor="#android:color/white"
app:cardElevation="4dp"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<View
android:id="#+id/myRectangleView"
android:layout_width="40dp"
android:layout_height="4dp"
android:layout_gravity="center"
android:layout_marginTop="4dp"
android:background="#drawable/rectangle"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Lisboa"
android:textAppearance="#style/TextAppearance.Header"
style="#style/TextComponent.ItemRow"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:lineSpacingExtra="8dp"
android:textSize="16sp"
android:text="#string/lorem"
/>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.FloatingActionButton
android:id="#+id/flexible.example.fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="32dp"
android:elevation="8dp"
android:src="#drawable/ic_adb_24dp"
app:layout_anchor="#id/flexible.example.cardview"
app:layout_anchorGravity="top|right|end"
tools:ignore="RtlHardcoded"
/>
</android.support.design.widget.CoordinatorLayout>
I think your layout is fine (works on my side), but maybe the behavior you want is more something like a Bottomsheet behavior.
Have you had a look at it?
Basically this will make you able something like google maps, so you would be able to scroll like you want.
Here is a tutorial to have a better understanding of what it is like.
Please let me know if this is what you're looking for.
as you can see the backButton is behind the frame layout.
but i want to make this button clickable unless its visible.
im using scrollview, which means i cannot place BackButton Above.
because it will colapse when i scroll it up.
Heres the XML
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:layout_width="match_parent"
android:layout_height="230dp"
android:src="#drawable/background"
android:scaleType="centerCrop">
</ImageView>
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/backButton"
android:clickable="true"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_alignParentTop="true"
android:layout_marginLeft="20dp"
android:layout_marginTop="20dp"
android:src="#drawable/ic_arrow_back_white"/>
</FrameLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="100dp"
android:scrollbars="none">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:weightSum="1">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.74"
android:descendantFocusability="blocksDescendants">
//SOME CONTENT HERE, REMOVED FOR READABILITY
</FrameLayout>
</LinearLayout>
</ScrollView>
</FrameLayout>
Simple question. How?
The problem here seems to be that neither you have only a single child inside your FrameLayout nor do you use the `android:layout_gravity" attribute. See the docs:
FrameLayout is designed to block out an area on the screen to display a single item. Generally, FrameLayout should be used to hold a single child view, because it can be difficult to organize child views in a way that's scalable to different screen sizes without the children overlapping each other. You can, however, add multiple children to a FrameLayout and control their position within the FrameLayout by assigning gravity to each child, using the android:layout_gravity attribute.
From the image you have uploaded I can see that the whole layout can be easily implemented using new Support Libraries in Android.
And if that is your case the whole Layout can be converted changed to use a CoordinatorLayout instead of using the FrameLayout directly. Check the following image. If that is what you want then follow along and if it is not exactly what you want you can IGNORE this Answer:
If you want something like this then FrameLayout might be a hard way to go while there exist support design libraries that will make your job easier.
In this case its CoordinatorLayout and Collapsing Tool Bar but even if you do not want the Collapsing toolbar still Coordinator Layout is the best Alternative for this!
If you want to know more about support design Libraries then here is a post Android Developers Google Blog.
Coordinator Layout it is easily to make layout of the nature like yours and its a smart alternative, For the image I have uploaded the code will be something like this:
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.sample.foo.usingcoordinatorlayout.FabAndSnackbarActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBar"
android:layout_width="match_parent"
android:layout_height="300dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsingToolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginStart="48dp"
app:expandedTitleMarginEnd="64dp"
app:title="#string/collapsing_toolbar">
<ImageView
android:id="#+id/toolbarImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
android:src="#drawable/bg"
app:layout_collapseMode="parallax" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_collapseMode="pin" />
</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"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="28sp"
android:lineSpacingExtra="8dp"
android:text="#string/long_latin"
android:padding="#dimen/activity_horizontal_margin" />
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.FloatingActionButton
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_margin="#dimen/activity_horizontal_margin"
android:src="#drawable/mascot_icon"
app:layout_anchor="#id/appBar"
app:layout_anchorGravity="bottom|end" />
</android.support.design.widget.CoordinatorLayout>
For Learning more about all this Support Library and more other interesting features, check this link its a good blog post about all these! Always remember you will always add support design in your app.gradle file just like appcompat. But the description from those links will consist all these information. Happy Coding!
Make your covering framework dont custom the touch event to let your underneath button be able to handle the touch event. So it is clickable.
I created a Scroll View which should allow me to scroll through all the content which is inside Linear Layout (that is a child of Scroll View).
Code looks like this:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="pl.oakfusion.delegator.DomesticDelegationSecondFragment">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
....
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="25dp"
android:layout_marginTop="25dp"
android:background="#color/textDarkest"
android:text="Save"
android:textColor="#color/textColor"
android:layout_gravity="right" />
</LinearLayout>
Preview looks like this:
But in my app I have this:
I can't scroll down, this is all I can see.
If I allow to rotate I have horizontal view:
which now allows me to scroll but cuts the button entirely. (On the picture is bottom of view) I can pull down fast and I can see that the button is there but it goes up again (this android thing when you can pull slightly further but it scrolls back)
How can I fix this?
Hosting activity:
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="pl.oakfusion.delegator.DomesticDelegationActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="#dimen/appbar_padding_top"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay">
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
try adding this to the scrollView in your xml layout
android:fillViewport="true"
I have experienced the same problem once. I tried adding padding for the ViewGroup inside ScrollView. Then it worked fine. Its a hacky solution and not an ideal one.
For the example mentioned above (by user3212350):
I have added some padding to the LinearLayout inside ScrollView to make the view completely visible. The amount of padding required may differ for various screen sizes.
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="pl.oakfusion.delegator.DomesticDelegationSecondFragment">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
##android:paddingBottom="50dp"##>
....
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="25dp"
android:layout_marginTop="25dp"
android:background="#color/textDarkest"
android:text="Save"
android:textColor="#color/textColor"
android:layout_gravity="right" />
</LinearLayout>
I want to make a scrolling at LinearLayout and disable scrolling from RecyclerView. I tried changing LinearLayout to NestedScrollView but it doesn't work and i don't know why.
I've tried this question but it doesn't work well. The content in RecyclerView can be loaded dynamically from WS and it's an endless scroll. The screen was freezing when content in RecyclerView updated.
I've seen this from Twitter, how can we do this https://drive.google.com/file/d/0B2JZggeoXKKFdG1ENmZEdWFIa0k/view?usp=sharing
Example
This is my simple screen of my app, i want scrolling at red currently, and it currently scrolls at 'blue'. Many thanks.
Code
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="160dp"
android:layout_margin="16dp"
android:background="#CCC"
android:id="#+id/imageView2" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Image caption"
android:background="#cbffa3"
android:padding="16dp"
android:id="#+id/textView8" />
<android.support.v7.widget.RecyclerView
android:id="#+id/my_recycler_view"
android:scrollbars="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
Tried but not work, contents inside RecyclerView not showing
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="160dp"
android:layout_margin="16dp"
android:background="#CCC"
android:id="#+id/imageView2" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Image caption"
android:background="#cbffa3"
android:padding="16dp"
android:id="#+id/textView8" />
<android.support.v7.widget.RecyclerView
android:id="#+id/my_recycler_view"
android:scrollbars="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
Option 1: Use WRAP_CONTENT on RecyclerView and put it in a scroll view along with other widgets. WRAP_CONTENT on RecyclerView works only with 23.2 though. This is not a recommended way as if use WRAP_CONTENT your RecyclerView items won't get recycled and it slow down the UI when the content gets long.
Option 2: Use types for the recycler view adapter and render a different view for index 0. This answer shows how to do it.
Option 3: The best option of achieving this kind of experience is using CollapsingToolbarLayout. Your top content will collapse when you scroll up and you'll be able to scroll the RecyclerView.
Here is one way of replicating the Twitter page with CollapsingToolbarLayout.
<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:layout_gravity="center"
android:fitsSystemWindows="false"
android:orientation="vertical"
app:statusBarBackground="#android:color/transparent">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="250dp"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="?actionBarSize"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
android:src="#android:drawable/btn_star_big_on"
app:layout_collapseMode="none"
/>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
android:background="#android:color/transparent"
android:elevation="5dp"
android:importantForAccessibility="yes"
app:layout_collapseMode="pin"
app:layout_scrollFlags="exitUntilCollapsed">
<TextView
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
android:layout_centerHorizontal="true"
android:layout_gravity="center_horizontal"
android:background="#android:color/white"
android:text="Title Here"
/>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</android.support.design.widget.CoordinatorLayout>
More about this is in the Android Blog - http://android-developers.blogspot.ca/2015/05/android-design-support-library.html (Scroll to "CoordinatorLayout and the app bar")
I recommend you to add a listener to the scroll view and detect if the user scrolls down, you "hide" the top. The easiest way is to use the default "Scroll Activity" that comes on the default menu when you create a new Activity in Android Studio using Material Design.