Colapsing toolbar is not smooth when scrolling down - android-layout

I have a problem with my collapsing toolbar. When I scroll up (toolbar is colapsing) it scrolls smoothly. Unfurtunately, when i scroll down (toolbar is expanding) scrolling stops waiting for nested scrolling view to get completely scrolled. I guess you will understand it with this GIF:
This is my XML:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:fab="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/vDrawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/background"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<android.support.design.widget.CoordinatorLayout
android:id="#+id/vCoordinator"
style="#style/Layout.Coordinator"
tools:context="io.stepuplabs.settleup.ui.main.MainActivity">
<io.stepuplabs.settleup.ui.main.StateAwareAppBar
android:id="#+id/vAppBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/vCollapsingToolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorAccent"
app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed|exitUntilCollapsed|snap">
<ImageView
android:id="#+id/vPlaceholderCircles"
android:layout_width="match_parent"
android:layout_height="296dp"
android:contentDescription="#string/desc_circles"
android:scaleType="centerCrop"
android:src="#drawable/placeholder"
app:layout_collapseMode="none"
/>
<android.support.v7.widget.Toolbar
android:id="#+id/vToolbar"
style="#style/Layout.Toolbar"
android:layout_marginBottom="40dp"
app:layout_collapseMode="pin"
app:layout_collapseParallaxMultiplier="1"
app:popupTheme="#style/AppTheme.PopupOverlay">
<TextView
android:id="#+id/vWhoShouldPayTitle"
android:layout_width="wrap_content"
android:visibility="gone"
android:layout_height="wrap_content"
android:layout_gravity="start"
android:text="#string/app_name"
android:textAppearance="#style/Text.Toolbar" />
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/vTabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0"
app:tabIndicatorColor="#color/white"
app:tabMode="scrollable" />
</android.support.design.widget.CollapsingToolbarLayout>
</io.stepuplabs.settleup.ui.main.StateAwareAppBar>
<android.support.v4.view.ViewPager
android:id="#+id/vViewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.v4.widget.ContentLoadingProgressBar
android:id="#+id/vActivityProgress"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" />
<com.github.clans.fab.FloatingActionMenu
android:id="#+id/vFloatingActionMenu"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="bottom|end"
android:contentDescription="#string/expense"
android:paddingBottom="10dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
app:layout_behavior="io.stepuplabs.settleup.ui.common.FloatingActionMenuBehavior"
fab:menu_animationDelayPerItem="0"
fab:menu_backgroundColor="#color/dim"
fab:menu_buttonSpacing="6dp"
fab:menu_fab_label="#string/expense"
fab:menu_icon="#drawable/fab_add"
fab:menu_labels_cornerRadius="30dp"
fab:menu_labels_ellipsize="end"
fab:menu_labels_paddingBottom="8dp"
fab:menu_labels_paddingLeft="16dp"
fab:menu_labels_paddingRight="16dp"
fab:menu_labels_paddingTop="8dp"
fab:menu_labels_position="left"
fab:menu_labels_textColor="#color/white"
fab:menu_labels_textSize="14sp">
<com.github.clans.fab.FloatingActionButton
android:id="#+id/vFabTransfer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:contentDescription="#string/transfer"
android:src="#drawable/ic_transfer"
fab:fab_label="#string/transfer"
fab:fab_size="mini" />
</com.github.clans.fab.FloatingActionMenu>
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/vNavigationDrawer"
android:layout_width="280dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#color/white"
android:fitsSystemWindows="true"
app:headerLayout="#layout/drawer_header"
app:itemBackground="#drawable/selector_items_background_color"
app:itemIconTint="#color/selector_drawer_items_foreground_color"
app:itemTextColor="#color/selector_drawer_items_foreground_color"
app:menu="#menu/drawer" />
</android.support.v4.widget.DrawerLayout>

Related

android studio: place recycleview on top of Edittext with transparent background

I'm trying to implement a chat activity where the background of the EditText is transparent, so on scrolling up the messages are visible behind the Edittext. But this is the result :
As you can see it is not perfect, I want to be able to scroll a little more to make messages above the edittext completely not behind it!
<androidx.recyclerview.widget.RecyclerView
android:layout_below="#+id/bar_layout"
android:id="#+id/recycle_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layoutManager="LinearLayoutManager"
android:stackFromBottom="true"
android:transcriptMode="alwaysScroll"
android:overScrollMode="never"
/>
<RelativeLayout
android:id="#+id/bottom"
android:layout_width="match_parent"
android:padding="5dp"
android:layout_margin="#dimen/_10sdp"
android:background="#android:color/transparent"
android:layout_alignParentBottom="true"
android:layout_height="wrap_content">
<EditText
android:id="#+id/text_send"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toLeftOf="#+id/btn_send"
android:background="#drawable/sendmessage"
android:hint="Type a message ... "
android:padding="8dp"
android:layout_centerVertical="true"
/>
<ImageButton
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_margin="5dp"
android:id="#+id/btn_send"
android:background="#drawable/ic_paper_plane"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"/>
</RelativeLayout>

Wrap it all in a LinearLayout with orientation="vertical"
<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context=".MainActivity"
android:id="#+id/root">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recycle_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:overScrollMode="never"
android:stackFromBottom="true"
android:transcriptMode="alwaysScroll"
app:layoutManager="LinearLayoutManager" />
<RelativeLayout
android:id="#+id/bottom"
android:layout_width="match_parent"
android:padding="5dp"
android:background="#android:color/transparent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<EditText
android:id="#+id/text_send"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toLeftOf="#+id/btn_send"
android:hint="Type a message ... "
android:padding="8dp" />
<ImageButton
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_margin="5dp"
android:id="#+id/btn_send"
android:background="#000000"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"/>
</RelativeLayout>
</RelativeLayout>

Layouts not visible despite the views being set to VIEW.VISIBLE

I have a working map fragment with a working navigation drawer in it.The 2 linear layouts are not visible despite being set to visible in the xml.Kind give me some help.what would be hiding those layouts?Where can i place for them to work.
I have tried a few solutions on line but none seemed to do the trick for me.
<FrameLayout
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"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="top"
android:orientation="vertical"
android:padding="5dp"
android:weightSum="0">
<Button
android:id="#+id/CanelRide"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Cancel Ride"
android:visibility="visible" />
</LinearLayout>
<LinearLayout
android:id="#+id/customerInfo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="#color/white"
android:orientation="horizontal"
android:padding="10dp"
android:visibility="visible">
<ImageView
android:id="#+id/customerProfileImage"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_margin="5dp"
android:padding="20sp"
android:src="#drawable/mainicon" />
<TextView
android:id="#+id/customerName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="3dp"
android:layout_marginTop="2dp"
android:gravity="left"
android:paddingBottom="3dp"
android:paddingLeft="5dp"
android:paddingRight="3dp"
android:text="Both Names"
android:textColor="#color/black"
android:textSize="19dp" />
</LinearLayout>
<android.support.v4.widget.DrawerLayout
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/driver_nav_header"
app:menu="#menu/driver_menu">
</android.support.design.widget.NavigationView>
<android.support.design.widget.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/black">
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</android.support.design.widget.AppBarLayout>
</android.support.v4.widget.DrawerLayout>

Try to use the below layout, I have changed frame layout as child & drawer layout as parent
<android.support.v4.widget.DrawerLayout
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/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<FrameLayout
android:id="#+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="top"
android:orientation="vertical"
android:padding="5dp"
android:weightSum="0">
<Button
android:id="#+id/CanelRide"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Cancel Ride"
android:visibility="visible" />
</LinearLayout>
<LinearLayout
android:id="#+id/customerInfo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="#color/white"
android:orientation="horizontal"
android:padding="10dp"
android:visibility="visible">
<ImageView
android:id="#+id/customerProfileImage"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_margin="5dp"
android:padding="20sp"
android:src="#drawable/mainicon" />
<TextView
android:id="#+id/customerName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="3dp"
android:layout_marginTop="2dp"
android:gravity="left"
android:paddingBottom="3dp"
android:paddingLeft="5dp"
android:paddingRight="3dp"
android:text="Both Names"
android:textColor="#color/black"
android:textSize="19dp" />
</LinearLayout>
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/driver_nav_header"
app:menu="#menu/driver_menu"/>
<android.support.design.widget.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/black"/>
</FrameLayout>
</android.support.v4.widget.DrawerLayout>

wrap_content of RecyclerView desn't work in CoordinatorLayout

I'm trying to make a wrap_content RecyclerView, but it doesn't work.
I write this 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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="br.com.moviee.activity.ItemActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:background="#android:color/transparent"
android:fitsSystemWindows="true"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginStart="48dp"
app:expandedTitleMarginEnd="64dp"
app:titleEnabled="true"
android:fitsSystemWindows="true">
<com.facebook.drawee.view.SimpleDraweeView
android:transitionName="#string/transition_poster"
android:id="#+id/poster"
android:layout_width="match_parent"
android:layout_height="400dp"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
app:layout_collapseMode="parallax"/>
<View
android:id="#+id/collapsing_comp"
android:layout_gravity="bottom"
android:layout_width="match_parent"
android:layout_height="140dp" />
<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:fitsSystemWindows="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<include layout="#layout/content_item" />
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_anchor="#id/app_bar_layout"
app:layout_anchorGravity="bottom|right|end"
android:layout_margin="#dimen/fab_margin"
app:srcCompat="#android:drawable/ic_dialog_email" /></android.support.design.widget.CoordinatorLayout>
My RecyclerView Item xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.facebook.drawee.view.SimpleDraweeView
android:id="#+id/thumb_trailer"
android:scaleType="centerCrop"
android:layout_margin="1dp"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ImageView
android:layout_gravity="center"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:src="#drawable/ic_play_arrow"
android:layout_width="wrap_content"
android:layout_height="wrap_content" /></RelativeLayout>
And the content Layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/content_item"
android:layout_width="match_parent"
android:fitsSystemWindows="true"
android:layout_height="wrap_content"
tools:context="br.com.moviee.activity.ItemActivity"
tools:showIn="#layout/activity_item">
<include layout="#layout/card_main_information" />
<include layout="#layout/card_overview" />
<TextView
android:background="#android:color/white"
android:textStyle="bold"
android:textSize="14sp"
android:padding="16dp"
android:text="#string/title_trailer"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<android.support.v7.widget.RecyclerView
android:background="#android:color/white"
android:id="#+id/grid_trailer"
android:layout_width="match_parent"
android:layout_height="wrap_content" /></LinearLayout>
And write this java code:
private void configGrid() {
if(getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT)
layoutManager = new GridLayoutManager(this, Youtube.COLUM_NUMBER_PORTRAIT);
else
layoutManager = new GridLayoutManager(this, Youtube.COLUM_NUMBER_LANDSCAPE);
trailerGrid.setLayoutManager(layoutManager);
TrailerGridAdapter adapter = new TrailerGridAdapter(this);
trailerGrid.setAdapter(adapter);
trailerGrid.setHasFixedSize(true);
trailerGrid.setNestedScrollingEnabled(false);
}
I don't know why my Wrap_content RecyclerView doesn't work.

Android Studio: How can I put image at the bottom of actionbar?

I'm using recyclerview that loops the images but it starts behind the actionbar as shown below. I wanted the image to appear starting below of the action bar. I tried using the android layout below but still doesn't. Any solution guys? Thanks !!!!
Activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
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/drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".activity.MainActivity">
<android.support.v7.widget.RecyclerView
android:id="#+id/card_recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
<android.support.design.widget.AppBarLayout
android:id="#+id/main_toolbar"
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:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="160dp"
android:layout_gravity="bottom|end"
android:layout_marginRight="#dimen/fab_margin"
android:visibility="invisible"
app:backgroundTint="#color/colorFAB2"
app:elevation="6dp"
app:pressedTranslationZ="12dp"
android:src="#drawable/ic_android_black_24dp" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="90dp"
android:layout_gravity="bottom|end"
android:layout_marginRight="#dimen/fab_margin"
android:visibility="invisible"
app:elevation="6dp"
app:backgroundTint="#color/colorFAB1"
app:pressedTranslationZ="12dp"
android:src="#drawable/ic_android_black_24dp" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
app:elevation="6dp"
app:backgroundTint="#color/colorAccent"
app:pressedTranslationZ="12dp"
android:layout_margin="#dimen/fab_margin"
android:src="#drawable/ic_add_white_24dp" />
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/navigation_view"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:layout_gravity="start"
app:headerLayout="#layout/nav_header"
app:menu="#menu/menu_navigation"/>
</android.support.v4.widget.DrawerLayout>
Content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<com.balysv.materialripple.MaterialRippleLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/lyt_parent"
style="#style/RippleStyleWhite"
android:layout_width="match_parent"
android:layout_height="150dp"
android:layout_margin="#dimen/spacing_medium"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<ImageView
android:id="#+id/img_android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/black_bg" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/shape_overlay"
android:padding="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal">
</LinearLayout>
<TextView
android:id="#+id/tv_android"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="Sample Title"
android:gravity="center"
android:textAppearance="#style/TextAppearance.AppCompat.Title"
android:textColor="#android:color/white"
android:textStyle="normal"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
</RelativeLayout>
</com.balysv.materialripple.MaterialRippleLayout>

Have you tried adding margin top to the RecyclerView ?
<android.support.v7.widget.RecyclerView
android:id="#+id/card_recycler_view"
android:layout_marginTop="?android:attr/actionBarSize"
android:layout_width="match_parent"
android:layout_height="match_parent"/>

CoordinatorLayout doesn't work with NestedScrollView inside Fragment in ViewPager

I have an Activity with next layout
Activity layout
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.AppBarLayout
android:id="#+id/issue_browse_app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/app_default_color"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/issue_browse_toolbar"
app:layout_scrollFlags="scroll|enterAlways"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize" />
<android.support.design.widget.TabLayout
android:id="#+id/issue_browse_tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/issue_browse_view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
ViewPager after instantiating has 2 fragments
First visible fragment's layout
<?xml version="1.0" encoding="utf-8"?>
<ViewSwitcher xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/issue_browse_view_switcher"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white">
<FrameLayout
android:id="#+id/issue_browse_status_buttons_container"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="#dimen/issue_status_browse_buttons"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:id="#+id/issue_browse_fragment_view_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="start" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_marginTop="1000dp"
android:text="end" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</FrameLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="vertical">
<TextView
android:id="#+id/issue_browse_load_error_text"
style="#style/list_view_empty_view_style"
android:drawableTop="#drawable/error" />
<TextView
android:id="#+id/issue_browse_refresh_after_error"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="#dimen/content_offset_small"
android:textColor="#c0bebe" />
</LinearLayout>
</ViewSwitcher>
How you can see, there is NestedScrollView with app:layout_behavior="#string/appbar_scrolling_view_behavior"
And regardless of the fact, has NestedScrollView this tag or not, Coordinator doesn't hide Toolbar.
Where is error in this code?

You are not using "CollapsingToolbarLayout"
Doc says:
CollapsingToolbarLayout is a wrapper for Toolbar which implements a
collapsing app bar. It is designed to be used as a direct child of a
AppBarLayout.
For your understanding refer below example
<android.support.design.widget.CoordinatorLayout
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: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:layout_scrollFlags="scroll|exitUntilCollapsed">
<android.support.v4.view.ViewPager
android:id="#+id/issue_browse_view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
style="#style/ToolBarStyle"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>

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