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Wave effect of NestedScrollView inside CoordinatorLayout is not working when scrolling

I made a layout using CoordinatorLayout as a container and NestedScrollView to display my contents.
I used NestedScrollView to hide my toolbar when scrolling down, but the usual wave effect which should be shown below toolbar whenever I try to scroll and reach the limit of the layout is not working.
Here is the
.
How to make this effect? If I use normal ScrollView, this effect will be shown but I can not hide my toolbar.
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:id="#+id/layout_detail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.dicoding.paul.moviecatalog.DetailActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar_detail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ToolbarTheme">
<android.support.v7.widget.Toolbar
android:id="#+id/tb_my_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary"
android:elevation="4dp"
android:theme="#style/ToolbarTheme"
app:popupTheme="#style/ToolbarTheme"
app:layout_scrollFlags="scroll|enterAlways"
app:title="Detail"
app:titleTextAppearance="#style/ToolbarTheme.TitleText"/>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/activity_detail_content"/>
</android.support.design.widget.CoordinatorLayout>
And here is my detail content:
<android.support.v4.widget.NestedScrollView
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:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
//contents
//contents
</android.support.v4.widget.NestedScrollView>

Try this:
android:clipToPadding="false"
In your NestedScollView.

Custom layout in Toolbar with TabLayout below

Right now, I have a normal looking Toolbar. What I want to do is add a custom layout between the Toolbar and the TabLayout, as shown in the picture below:
On the left is what my Toolbar looks like now, and on the right is what I want it to look like.
As you can see, I want to add an ImageView and two TextViews to the layout.
How can I achieve this?
Here is my current layout:
<?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/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay" />
<android.support.design.widget.TabLayout
android:id="#+id/tablayout"
android:layout_width="match_parent"
android:layout_height="48dp"
app:layout_scrollFlags="scroll|enterAlways" />
</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" />
</android.support.design.widget.CoordinatorLayout>

AppBarLayout extends LinearLayout, so you can add any number of views to your AppBarLayout: there's no reason to add the views specifically to your Toolbar.
You'll want to make sure you use the same layout_scrollFlags as your Toolbar if you want them to scroll the same.

Toolbar is just a ViewGroup, you can customize is as much as you want.
Try this :
<android.support.v7.widget.Toolbar
style="#style/ToolBarStyle"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="#dimen/abc_action_bar_default_height_material">
<ImageView
android:layout_width="wrap_content"
android:contentDescription="#string/logo"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="#drawable/ic_launcher"/>
This should bring your imageView in center of toolbar.

Android - How to left align single tab in TabLayout

I have a TabLayout that I'm using along with AppBarLayout, ToolBar, and ViewPager in order to have scrollable tabs. At the moment, I have a single tab, but rather than being left aligned the tab is centered.
<?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:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<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/ThemeOverlay.AppCompat.Light" />
<android.support.design.widget.TabLayout
android:id="#+id/tablayout"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>

Set your TabLayout attributes to:
app:tabGravity="center"
app:tabMode="scrollable"
hope this help.

Try using the XML attribute set
android:layout_gravity="left"
This is all that I could find on this topic it is documented
that set layout_gravity is a value for a tabbed layout.
More documentation here. And here

Just change TabLayout widhth to wrap_content... that will make that single tab to be left aligned

Scrollable Layout on top of ViewPager

I am creating an app with an AppBar and below this one, a (Relative)Layout.
Like in Facebook Messenger :
You can see the AppBar and below it a Layout with three buttons (TOUS, MESSENGER, SMS).
When I scroll, my Layout including the three buttons does not move, it stays "pinned" at the same position (on top). My objective is to make that the Layout with the thress buttons pass behind the AppBar and does not stay in the view.
Here is my actual code :
<?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/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<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.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll|enterAlways|snap" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
app:tabIndicatorColor="#color/fullWhite"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:background="#color/background_grey_white">
<!-- These part has to scroll and pass behind the AppBar when the user is scrolling, but it does not work at the moment, it stays "pinned" at the top of the screen -->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="13sp"
android:id="#+id/content_frame">
<include layout="#layout/tous_messenger_sms"/>
</RelativeLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/separator_color"/>
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
What do I have to change to make it work ?
Can someone help me? Thank you!

Just move the RelativeLayout into the layout of the first element of the ViewPager. In this way when you swipe, the elements in the RelativeLayout will disappear, because the current tab was changed.

Disabling android CoordinatorLayout scrolling behaviour

When adding scrolling behaviour to a layout with coordinatorLayout 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">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
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.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/mainContent"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
</FrameLayout>
</android.support.design.widget.CoordinatorLayout>
the mainContent is the part that matters.
The real layout will be inflated inside this container.
Imagining my View consists of a RecyclerView, and a fixed layout at the bottom of the screen.
Does someone know a way to remove the scrolling behavior of the bottom fixed layout and keep the RecyclerView-Toolbar-hide behaviour?

Inside a 'CoordinatorLayout' the views that scroll must be first and only later the non-scrollable views. I managed to solve the issue by placing my non-scrollable layout outside the 'mainContent', just below it