Develop Reference

Coordinator layout - collapsing content interaction with recycler view

schema
As shown in the picture, I want my 2 views ( recycler view and collapsing content ) to be responding only to the middle grip bar ( it could be 50dp height constraint layout - for example )
Moving this bar should collapse the upper part - and make recyclerview change its height. The bar shouldn't be able to move lower than the upper part content. Recycler view should be able to scroll independently all the time.
How to make only restricted area respond to touch events?
How to make recyclerview height depend on grip position ?
Now in my case, the collapsing part is getting hidden just after i start scrolling recyclerview.
If there is not enough information, I'll add whatever required.
Code:
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.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/activityToDo"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ui.ToDoActivity">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:id="#+id/collapsingToolbar"
app:layout_scrollFlags="scroll|enterAlways"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.constraintlayout.widget.ConstraintLayout
app:layout_collapseMode="parallax"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<EditText
android:hint="Note title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/noteTitle"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginStart="10dp"
app:layout_constraintEnd_toStartOf="#+id/guideline"
android:layout_marginEnd="10dp"
android:layout_marginTop="15dp"
android:textSize="15sp"
android:inputType="text" app:layout_constraintTop_toTopOf="parent"/>
<EditText
android:hint="Note priority"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/notePriority"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginEnd="10dp"
app:layout_constraintStart_toStartOf="#+id/guideline"
android:layout_marginStart="10dp"
android:layout_marginTop="15dp"
android:textSize="15sp"
android:inputType="number" app:layout_constraintTop_toTopOf="parent"/>
<androidx.constraintlayout.widget.Guideline
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintGuide_begin="197dp"
android:id="#+id/guideline"/>
<EditText
android:hint="Note description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/noteDescription"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginEnd="10dp"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginStart="10dp"
app:layout_constraintTop_toBottomOf="#+id/notePriority"
android:layout_marginTop="20dp"
android:textSize="15sp"/>
<Button
android:text="Save"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/saveButton"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginStart="10dp"
app:layout_constraintEnd_toStartOf="#+id/guideline" android:layout_marginEnd="10dp"
android:layout_marginBottom="20dp" app:layout_constraintBottom_toBottomOf="parent"
android:layout_marginTop="10dp" app:layout_constraintTop_toBottomOf="#+id/noteDescription"/>
<Button
android:text="Clear"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/clearButton"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginEnd="10dp" app:layout_constraintStart_toStartOf="#+id/guideline"
android:layout_marginStart="10dp" android:layout_marginBottom="20dp"
app:layout_constraintBottom_toBottomOf="parent" android:layout_marginTop="10dp"
app:layout_constraintTop_toBottomOf="#+id/noteDescription"/>
</androidx.constraintlayout.widget.ConstraintLayout>
</com.google.android.material.appbar.CollapsingToolbarLayout>
<TextView
android:text="All notes"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</com.google.android.material.appbar.AppBarLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior">
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/allNotesRecyclerView"
android:layout_marginStart="8dp"
app:layout_constraintTop_toTopOf="#id/collapsingToolbar"
android:layout_marginTop="16dp"
android:textSize="15sp"/>
</LinearLayout>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
GitHub Repo

in my case like this :
add app:layout_behavior="#string/appbar_scrolling_view_behavior" on your recyclerview and look my CollapsingToolbarLayout and my Toolbar
<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:id="#+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".myactivity.DetailWisataActivity">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/app_bar_detail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:id="#+id/collapse_toolbar_detail"
android:layout_width="match_parent"
android:layout_height="200dp"
android:fitsSystemWindows="true"
app:contentScrim="?colorPrimary"
app:expandedTitleGravity="center_horizontal|bottom"
app:layout_scrollFlags="scroll|snap|exitUntilCollapsed">
<ImageView
android:id="#+id/img_bg_detail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription="#string/app_name"
android:scaleType="centerCrop"
android:src="#drawable/bg_beach"
app:layout_collapseMode="pin"
tools:targetApi="m" />
<View
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorTransparantBlackLow" />
<ProgressBar
android:id="#+id/progress_detail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" />
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar_detail"
android:layout_width="match_parent"
android:layout_height="#dimen/actionBarSizeLow"
android:theme="#style/ThemeOverlay.AppCompat.Light"
app:layout_collapseMode="pin"
app:title="#string/info_wisata" />
</com.google.android.material.appbar.CollapsingToolbarLayout>
</com.google.android.material.appbar.AppBarLayout>
............Your recyclerview here.......
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
</androidx.coordinatorlayout.widget.CoordinatorLayout>
and remove your Linearlayout.

Fisrt remove your LinearLayout from parent of recyclerview and try this:
<androidx.coordinatorlayout.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">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<!-- HEADER -->
<RelativeLayout
...
app:layout_collapseMode="parallax">
.....
</RelativeLayout>
<androidx.appcompat.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin" />
</com.google.android.material.appbar.CollapsingToolbarLayout>
<!-- IF YOU WANT TO KEEP "Choose Item" always on top of the RecyclerView, put this TextView here
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:text="choose item" />
-->
</com.google.android.material.appbar.AppBarLayout>
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
Same question answer: Link

With the newest version of Android Studio (4.0 Canary 9), you can use the new MotionLayout layout type to transition between different ConstraintLayouts. The simplest solution (below) wouldn't necessarily let you change the RecyclerView height to whatever you wanted, but you could smoothly transition between two different layouts when the user swipes up or down.
In short, you would do the following:
In your build.gradle (Module: app) file, add the following line:
implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta4'
Create a new ConstraintLayout layout file that determines how all of your views should be arranged at the beginning
Convert that ConstraintLayout to a MotionLayout using the right-click menu in the layout editor
In the MotionLayout editor, add constraints to each view in the "start" and "end" layouts
In the new MotionScene XML file that was added to the XML folder in your res folder, edit the tag to look like this:
<Transition
motion:constraintSetEnd="#+id/end"
motion:constraintSetStart="#id/start"
>
<OnSwipe
app:touchAnchorSide="top"
motion:touchAnchorId="#id/YOUR_GRIP_VIEW"
motion:dragDirection="dragUp" />
<KeyFrameSet>
</KeyFrameSet>
</Transition>
* In the MotionLayout Codelab, it says to use app:touchAnchorID instead of motion:touchAnchorId but that didn't work for me *
Now, when you swipe your grip view up or down, the MotionLayout can transition between states.

Prevent AppBarLayout.ScrollingViewBehavior from adding top margin to the view?

I'm trying to achieve a layout where my view will extend all the way across the screen, under the ActionBar, and the ActionBar will be transparent. I also need the ActionBar and BottomNavigationView to hide on scroll, so I'm using CoordinatorLayout.
I'm using the AppCompat theme with the attribute <item name="windowActionBarOverlay">true</item> in order to have my views extend under the ActionBar. However, after adding app:layout_behavior="#string/appbar_scrolling_view_behavior" to my container Fragment, the view gets placed below the ActionBar.
Is there a way to prevent this part of the appbar_scrolling_behaviour? I've tried without the behaviour, but the scrolling of the AppBar is not synced witht he RecyclerView scrolling underneath it. Thank you!
Here's a gif of the problem
P.S.: I'm trying to use the Android Navigation Component, so I'm following a single activity, multi fragment architecture, if that matters.

Try this code and make some changes because i used androidx..
make main layout like this way..
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:background="#color/white">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/white"
android:theme="#style/MyToolbar"
app:contentInsetStart="0dp"
app:contentInsetStartWithNavigation="0dp"
app:titleTextAppearance="#style/MyToolbar">
<ImageView
android:id="#+id/headerIcon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/_6sdp"
android:src="#drawable/ic_edit_location_black"
android:visibility="gone" />
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/_6sdp">
<TextView
android:id="#+id/header"
style="#style/MyToolbar"
android:layout_width="wrap_content"
android:layout_height="?attr/actionBarSize"
android:gravity="center_vertical"
android:textColor="#color/primary"
app:layout_constraintStart_toStartOf="parent" />
<ImageView
android:id="#+id/ivSearch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="#dimen/_10sdp"
android:src="#drawable/search_icon"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.appcompat.widget.Toolbar>
</com.google.android.material.appbar.AppBarLayout>
<FrameLayout
android:id="#+id/activity_main_container"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="#+id/bottomContainer"
app:layout_constraintTop_toBottomOf="#+id/appBarLayout" />
<RelativeLayout
android:id="#+id/bottomContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="#+id/bvTabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/Widget.BottomNavigationView"
app:itemIconTint="#drawable/navigation_drawable_tint"
app:itemTextColor="#drawable/navigation_drawable_tint"
app:menu="#menu/bottom_menu_item" />
</RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

Adding items and design on toolbar toolbar

How to add the different type of designs and color to a toolbar and showing the value(value depends on user points) on toolbar gets updated whenever the user goes to another activity.

You can take RelativeLayout inside Toolbar and customize it according to your requirement. Here is sample Code.
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.AppBarLayout 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="wrap_content">
<android.support.v7.widget.Toolbar
android:id="#+id/my_toolbar"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#color/colorPrimary"
app:navigationIcon="#mipmap/ic_launcher_round"
app:titleTextColor="#android:color/white">
<RelativeLayout
android:id="#+id/rl_plane_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="visible">
<ImageView
android:id="#+id/tv_submit"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:gravity="center_vertical"
android:src="#mipmap/ic_launcher_round"
android:text="Submit" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>

Image as Toolbar background that hangs outside of its bounds

I've tried using various layouts but that little bit that hangs outside the boundary of the rectangular toolbar doesn't work (the semi circle).
I want something like this:
How would I go about implementing this? I've something that visually looks like this but it is just an ImageView inside a relative layout. I want a proper Toolbar.

Well I do now know if you want this, but I've done this example for you, hope it helps.
This is the activity_main.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"
tools:context=".MainActivity">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
</android.support.v7.widget.Toolbar>
<android.support.constraint.Guideline
android:id="#+id/guidelineImageStart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent=".33" />
<android.support.constraint.Guideline
android:id="#+id/guidelineImageEnd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent=".66" />
<ImageView
android:id="#+id/imageView"
android:layout_width="100dp"
android:layout_height="100dp"
android:src="#drawable/overlape_image"
app:layout_constraintDimensionRatio="W,1:1"
app:layout_constraintLeft_toLeftOf="#id/guidelineImageStart"
app:layout_constraintRight_toRightOf="#id/guidelineImageEnd"
app:layout_constraintTop_toTopOf="parent" />
<include layout="#layout/content_main" />
</android.support.constraint.ConstraintLayout>
</android.support.design.widget.CoordinatorLayout>
Now you can play and adjust size of views.

Collapsing Toolbar Layout and Constraint Layout

I am struggling to create collapsing image header alongside Constraint where my design looks like this
Currently the profile pic is a part of the ConstraintLayout because it needs Guideline constraints and unfortunately it is overlapped by the AppBarLayout
Any ideas how to achieve that?
Can't find any source regarding my combination of layouts.....
<?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.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/playerViewBg"
android:fitsSystemWindows="false">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/bgIV"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:adjustViewBounds="true"
android:scaleType="centerCrop"
android:src="#drawable/header_bg" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/playerIV"
android:layout_width="177dp"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_marginTop="62dp"
android:adjustViewBounds="true"
android:scaleType="fitCenter"
android:src="#drawable/profilePic"
app:layout_constraintEnd_toStartOf="#+id/guideline2"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintStart_toStartOf="#+id/guideline"
app:layout_constraintTop_toTopOf="parent" />
<!-- Other content -->
<android.support.constraint.Guideline
android:id="#+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.27" />
<android.support.constraint.Guideline
android:id="#+id/guideline2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.73" />
</android.support.constraint.ConstraintLayout>
</android.support.design.widget.CoordinatorLayout>

Following is the snippet of my working layout:
Please make sure that you haven't make any childview height to match parent(0 dp) inside constrianlayout also for scroll view android:fillViewport="true". Ask me if any doubt Occur.
<android.support.design.widget.CoordinatorLayout
android:id="#+id/coordinator"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
android:fitsSystemWindows="false">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/ivImagec"
android:layout_width="wrap_content"
android:layout_height="#dimen/_90sdp"
android:contentDescription="#string/no_des"
android:scaleType="centerCrop"
app:srcCompat="#drawable/outdoorgames" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:id="#+id/scroll_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="#dimen/_90sdp"
android:fillViewport="true">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:id="#+id/cvLayout"
android:animateLayoutChanges="true">
....
</android.support.constraint.ConstraintLayout>

I've actually recently started thinking about this
And based on this talk here from two of the devs behind Android Studio :
https://www.youtube.com/watch?v=8lAXJ5NFXTM (at the 21 mins: 28 seconds mark)
It is definitely possible, they recommend replacing the CollapsingToolbarLayout completely with the ConstraintLayout.