Develop Reference

CollapsingToolBarLayout has dual toolbar

I am having issues with implementing CollapsingToolbarLayout. I have this problem:
Yes, I've got to place the view in the layout, but it collapses below the original toolbar (or ActionBar for that matter) as shown in the image below. I have no idea how to fix this.
Thanks for any help. I am using Android Studio 2.1.1.
Here is my 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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ArticleActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="#+id/app_bar_layout"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/collapsing_toolbar"
app:layout_scrollFlags="scroll|enterAlways"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginStart="48dp"
app:expandedTitleMarginEnd="64dp">
<ImageView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="#+id/featuredImage"
android:src="#mipmap/ic_launcher"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
app:layout_collapseMode="parallax"
android:contentDescription="#string/article_image"/>
<android.support.v7.widget.Toolbar
android:id="#+id/tool_bar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
app:layout_scrollFlags="scroll|enterAlways"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<WebView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/article_container" />
</FrameLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/share"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:src="#mipmap/ic_share_variant" />
</android.support.design.widget.CoordinatorLayout>

I found out where I went wrong. I had left out the theme statement in the manifest. All I had to do was add the line android:theme="AppTheme.NoActionBar" to my activity in the manifest.
However, this brought up two new issues:
The new ToolBar scrolls out of view (does not stick to the top.)
The back button that should lead me to my previous activity is gone. However, I'll ask this as a separate question if I do not get the solutions from researching.

CollapsingToolbarLayout image to persist when scrolling to top like the Play Store app

I have a CollapsingToolbarLayout with an image and text in it. Below is the layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:tools="http://schemas.android.com/tools"
style="#style/Root"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res-auto"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
custom:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:layout_width="match_parent"
android:layout_height="#dimen/appbar_image_height"
android:fitsSystemWindows="true"
android:background="#color/red"
custom:layout_scrollFlags="scroll|exitUntilCollapsed">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
style="#style/HmatchWmatch"
custom:contentScrim="#color/red"
custom:statusBarScrim="#color/primary_dark"
custom:expandedTitleTextAppearance="#android:color/transparent"
android:fitsSystemWindows="true"
custom:layout_scrollFlags="scroll|exitUntilCollapsed">
<RelativeLayout
style="#style/HmatchWmatch"
android:fitsSystemWindows="true"
custom:layout_collapseMode="parallax"
custom:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="#+id/toolbar_iv"
style="#style/HmatchWmatch"
android:scaleType="centerCrop"
tools:ignore="ContentDescription"/>
<TextView
android:id="#+id/toolbar_title"
style="#style/TextLarge.Pad"
android:layout_width="match_parent"
android:layout_alignParentBottom="true"
android:paddingBottom="#dimen/vpad"
android:background="#drawable/appbar_title_bg"
android:textColor="#android:color/white"
android:maxLines="2"/>
<TextView
android:id="#+id/toolbar_dm"
style="#style/TextSmall.Pad"
android:layout_width="match_parent"
android:layout_above="#id/toolbar_title"
android:paddingTop="#dimen/vpad"
android:background="#drawable/appbar_dm_bg"
android:textColor="#android:color/white"
android:maxLines="2"/>
</RelativeLayout>
<include
android:id="#+id/toolbar"
layout="#layout/toolbar"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<fragment
android:id="#+id/fragment"
android:name="com.Fragment"
style="#style/HmatchWmatch"
custom:layout_behavior="#string/appbar_scrolling_view_behavior"/>
<Button
android:id="#+id/sign_button"
style="#style/TextMedium"
android:layout_width="match_parent"
android:text="#string/sign_button_text"
android:textColor="#android:color/white"/>
</android.support.design.widget.CoordinatorLayout>
And below is the layout for the toolbar:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:custom="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/change_red"
custom:layout_scrollFlags="scroll|enterAlways"
custom:layout_collapseMode="pin"
tools:ignore="Overdraw"/>
When scrolling up, the image disappears and it becomes the toolbar which is pinned at the top. What I want to achieve is like in the Play Store app, when scrolling up in a particular app, the image disappears when scrolled up and the toolbar appears in the screen when scrolled down again. How can I achieve that in my case?
My problem is that I want the Appbar to scroll off the screen completely when scrolled up and when scrolling down again, the toolbar should appear.

I have tried various method but I don't think nothing helped to implement the exact way of Play Store animation and design (using design library)! Out of all the following matches almost similar. This is almost similar to what #MicheleLacorte suggested in comment!
<?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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="idoandroid.scroll.ScrollingActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="#dimen/app_bar_height"
android:fitsSystemWindows="true"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
android:src="#drawable/background"
app:layout_collapseMode="parallax"/>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/AppTheme.PopupOverlay"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_scrolling"/>
</android.support.design.widget.CoordinatorLayout>
In case if you want the exact same implementation then you have to look into some third party libraries! Just giving the link for some of third party libs in case if you are interested!

Parallax Collapse Toolbar wrong scroll and layout

I have the following layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:context="br.com.myproject.view.fragment.ProductActivityFragment"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_scrollFlags="scroll|exitUntilCollapsed"
tools:contentScrim="?attr/colorPrimary"
tools:expandedTitleMarginStart="48dp"
tools:expandedTitleMarginEnd="64dp"
android:fitsSystemWindows="true">
<ImageView
android:id="#+id/ivImgProduct"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
tools:layout_collapseMode="parallax"/>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
tools:layout_scrollFlags="scroll|enterAlways"
tools:popupTheme="#style/ThemeOverlay.AppCompat.Light"
tools:layout_collapseMode="pin">
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/rvProductActions"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_behavior="android.support.design.widget.AppBarLayout$ScrollingViewBehavior">
</android.support.v7.widget.RecyclerView>
</android.support.design.widget.CoordinatorLayout>
The RecyclerView is getting on the Toolbar are staying with an appearance "overlapped". The scroll both RecyclerView as the CollapsingToolbarLayout not working.
I'm trying to leave my layout with the behavior as this example link, but using RecyclerView.

After many attempts I used a library called Android-ObservableScrollView and it worked. It is simpler to use, provides several examples and a single component already has the desired effect. Scroll content has to be greater than the empty screen space for the scroll to take effect because it does not have the bounce effect of iOS.

You have to add app:layout_behavior="#string/appbar_scrolling_view_behavior" to your recyclerview

CoordinatorLayout with Tabs in android?

I am new for CoordinatorLayout i want to use coordinatorLayout in my application but it cause some problem in display CollapsingToolbarLayout view.
i want to design view like whatsApp screen Tabs in Coordinatorlayout
My XML Code
<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/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="#dimen/detail_backdrop_height"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fitsSystemWindows="false"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginEnd="32dp"
app:expandedTitleMarginStart="24dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light">
</android.support.v7.widget.Toolbar>
</LinearLayout>
<android.support.design.widget.TabLayout
android:id="#+id/tabanim_tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/tabanim_viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
// child view
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>`

I Found Solution for Tabs in CoordinatorLayout
<?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:id="#+id/tabanim_maincontent"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/tabanim_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/tabanim_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light">
</android.support.v7.widget.Toolbar>
/***
Here You can add custom layout
**/
<android.support.design.widget.TabLayout
android:id="#+id/tabanim_tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/tabanim_viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>

CoordinatorLayout is delicate sometimes, I suggest you to follow the next example using it as a base and adding more complexity step by step if you need:
https://gist.github.com/RicardAparicio/f41523daaa0edbe0b4399549fff4da3f
Hope it helps.

"but it cause some problem in display" doesn't say what kind of problem You had, glad You found the solution though.
There is indeed problem in both 22.2.1 and 23.0.1 support libraries with TabLayout and ViewPager in CoordinatorLayout while using fitsSystemWindows="true". While using RecyclerView and scrolling it up TabLayout header goes into status bar while it's background color is not being pinned.
I might only imply that above was one of Your problems, if yes then removing fitsSystemWindows is not best solution as application will loose a lot of it's look in 5.0+ Android.
It is not good solution either but I managed to fix this issue by adding nested android.support.design.widget.CoordinatorLayout, but if You use DrawerLayout there, then nothing is needed as shown in this example: https://github.com/chrisbanes/cheesesquare

Animating logo along with collapsing toolbar within CoordinatorLayout

I want to implement collapsible toolbar with a logo in the following manner:
Flexible Space with overlapping content, like shown here (have this already);
Parallaxed pattern in this space that gets scrimmed with solid color (have this too)
A horizontally-centered logo, which must appear right above the content but float upwards as toolbar collapses:
In action it should be something like Pesto's leaves here (not necessarily resizable, but that would be a plus):
Here's my layout:
<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:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="192dp"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:contentScrim="?attr/colorPrimary">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:src="#drawable/random_pattern"
android:scaleType="fitXY"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.75"/>
<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.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:id="#+id/nested_scroll_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
app:behavior_overlapTop="64dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivityFragment"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp">
<!-- card content -->
</android.support.v7.widget.CardView>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
The problem is, wherever I try to place the logo picture, either it doesn't move like I need it too, or everything breaks. It feels like a custom Behavior might be required. Unfortunately neither of the tutorials I found on the new Design library explain how to extend it — only how to use provided stuff. There's no source code of it released, the decompiled code has no comments and is extremely tangled, and the fact that I'm not yet very comfortable with Android's layouting internals makes it even worse.
Please help?

Okay, I sorta did it!
My solution is horrible, so I'll still be expecting for better ones :)
I went on and created a custom view CollapsingLogoToolbarLayout, which is a subclass of CollapsingToolbarLayout. The latter class is where title transition is taken care of — so in my subclass I placed the logic that changed properties of the logo view, namely its translationY based on "expanded-ness" fraction. Gist with code is here. Now after I found suitable offset parameters, my layout looks like this:
...
<com.actinarium.random.common.CollapsingLogoToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:contentScrim="?attr/colorPrimary"
app:logoViewId="#+id/collapsing_logo"
app:collapsedViewOffset="0dp"
app:expandedViewOffset="-56dp">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:src="#drawable/random_pattern"
android:scaleType="fitXY"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.75"/>
<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.v7.widget.Toolbar>
<FrameLayout
android:id="#+id/collapsing_logo"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="bottom">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="#drawable/random_logo"/>
</FrameLayout>
</com.actinarium.random.common.CollapsingLogoToolbarLayout>
...