Develop Reference

How to prevent toolbar from collapsing after scroll?

After scroll, I don't want the toolbar to collapse but only the ImageView, similar to exitUntillCollapsed. But I want the app bar to expand on slightest downward scroll. How do I achieve this?
<android.support.design.widget.AppBarLayout
android:id="#+id/appBarLayout"
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/collapsingToolbarLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="#+id/imageViewCollapsing"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/winterscenery"
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"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>

For scroll behaviour pls use flag enterAlways
For Fix toolbar layout pls add toolbarlayout above your coordinatorLayout.
<LinearLayout 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: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.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBarLayout"
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/collapsingToolbarLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways">
<ImageView
android:id="#+id/imageViewCollapsing"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/winterscenery"
app:layout_collapseMode="parallax" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
</LinearLayout>

Recycler view with CollapsingToolbarLayout dosent work properly

Im using a CollapsingToolbar Layout and a recycler below it, what i want is that when i start scrolling in the recylcer view the toolbar changes itself along with it . if i scroll up the toolbar gets small and if i scroll down the toolbar comes down with it , but right now . whats happening is the recycler view and the toolbar are both acting independently of each other . the recycler view scrolls but nothing happens to the toolbar . i have to drag the toolbar up and down myself.
Here is my xml file.
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
xmlns:android="http://schemas.android.com/apk/res/android">
<data>
<variable
name="scoutingFragmentViewModel"
type="com.resatech.android.navigationtest.viewModels.ScoutingFragmentViewModel" />
</data>
<android.support.design.widget.CoordinatorLayout
android:id="#+id/htab_maincontent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/htab_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/htab_collapse_toolbar"
android:layout_width="match_parent"
android:layout_height="256dp"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
app:titleEnabled="false">
<ImageView
android:id="#+id/htab_header"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/battery"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
/>
<android.support.v7.widget.Toolbar
android:id="#+id/htab_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="top"
android:layout_marginBottom="48dp"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="260dp"
app:layout_anchorGravity="bottom"
android:layout_marginTop="10dp"
android:layout_marginBottom="8dp"
android:fadeScrollbars="false"
android:scrollbars="vertical"
app:layout_behavior="android.support.design.widget.AppBarLayout$ScrollingViewBehavior"
>
</android.support.v7.widget.RecyclerView>
</android.support.design.widget.CoordinatorLayout>
</layout>
As you can see, the scrollbar still dosent go up by itself i have to drag it up manually even if the recycler view is at its bottom.

Replace this :
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="260dp"
app:layout_anchorGravity="bottom"
android:layout_marginTop="10dp"
android:layout_marginBottom="8dp"
android:fadeScrollbars="false"
android:scrollbars="vertical"
app:layout_behavior="android.support.design.widget.AppBarLayout$ScrollingViewBehavior"
>
</android.support.v7.widget.RecyclerView>
With this:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="260dp"
app:layout_anchorGravity="bottom"
android:layout_marginTop="10dp"
android:layout_marginBottom="8dp"
android:fadeScrollbars="false"
android:scrollbars="vertical">
</android.support.v7.widget.RecyclerView>
</RelativeLayout>

Change your AppBarLayout as below
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:expandedTitleTextAppearance="#style/TextAppearance.AppCompat.Title">
<ImageView
android:layout_width="match_parent"
android:layout_height="256dp"
app:layout_collapseMode="parallax"/>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
app:layout_collapseMode="pin"
android:layout_height="?attr/actionBarSize"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:theme="#style/ToolBarStyle" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
and add app:layout_behavior="#string/appbar_scrolling_view_behavior" to your RecyclerView

Try this
<?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">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="180dp"
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|exitUntilCollapsed"
app:toolbarId="#+id/toolbar">
<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/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</android.support.design.widget.CoordinatorLayout>
Then dont forget to set your default toolbar
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
Hope it helps.

coordinator layout not working on big screen

Here are the screenshots
enter image description here
I implemented a coordinator layout for the first time. It is working fine on small screen phone, however on big screen(or maybe due to newer version of android) the title that i am giving to the appbarlayout its only displaying half horizontally when the toolbar is collapsed.
Here is my layout-
<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">
<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:title="CoordinatorLayout">
<ImageView
android:id="#+id/toolbarImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
android:src="#drawable/ic_launcher_background"
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="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/recycle">
</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>

How to use collapsing toolbar for vertical views

In my activity,I have a toolbar and the view should be displayed below toolbar (Like Linearlayout) and listview as follows,
<RelativeLayout 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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.example.xyz.abc.MainPage">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay"
android:id="#+id/view">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<RelativeLayout
app:layout_collapseMode="parallax"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<FrameLayout
android:background="#android:color/transparent"
android:id="#+id/header_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
<TextView
android:layout_below="#+id/header_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/progress"
/>
</RelativeLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
app:layout_collapseMode="pin"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<FrameLayout
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:id="#+id/body_content"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
I want to use hide the view below toolbar (Relative layout) when the listview is scrolled like this. But It is not working for my case . I tried every solution in this post . Even changing CoordinatorLayout to RelativeLayout doesn't work.
In my xml, the framelayouts will be replaced at runtime.
Guide me, Thanks in advance

You have to use scrollview or nested scrollview with collapsing toolbar.
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar_"
android:layout_width="match_parent"
android:layout_height="192dp"
android:background="?attr/colorPrimary"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginBottom="32dp"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="192dp"
android:background="#color/colorPrimary"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
android:src="#drawable/bg2"
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.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
Use Scrollview here
Now you can continue with your framelayout or watevr you want to use

Status bar moving down when open collapsing toolbar (with parallax image effect)

I have a problem with collapsing toolbar layout. I would like to create collapsing toolbar with parallax effect. I read a lot of tutorials and everything is ok except one little element. The background of status bar is moving down while scrolling NestedScrollView quickly. I would like to create profile like in Facebook app.
I am attaching a video which shows my problem (in this video I am showing borders of layouts).
URL: https://drive.google.com/open?id=1RXhEW4244DvsKE3p3dYaIyi5g17PuFP2
Also this is my layout:
<?xml version="1.0" encoding="utf-8"?>
<layout>
<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/coordinator"
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="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing"
android:layout_width="match_parent"
android:layout_height="200dp"
app:titleEnabled="false"
android:fitsSystemWindows="true"
app:contentScrim="#color/colorRedThemePrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
android:fitsSystemWindows="true"
android:src="#drawable/drawer_top_part" />
<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.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:id="#+id/scroll"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:overScrollMode="never"
android:clipToPadding="false"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/activity_rules_info_text" />
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
</layout>
Could you help me to resolve this problem ?

I had the exact same problem and it turns out that it was because of the android:fitsSystemWindows="true" property on the android.support.design.widget.AppBarLayout element.
If you remove that, it should work.
Here is my layout.xml:
<?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"
android:fitsSystemWindows="true"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="#dimen/app_bar_height"
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"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
android:fitsSystemWindows="true"
app:toolbarId="#+id/toolbar">
<ImageView
android:id="#+id/iv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
android:clickable="true"
android:foreground="?attr/selectableItemBackground"
android:orientation="vertical"
app:layout_collapseMode="parallax"
android:contentDescription="#string/image"
app:srcCompat="#drawable/risotto">
</ImageView>
<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/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content" />
</android.support.design.widget.CoordinatorLayout>