Develop Reference

How to fix a gap between AppBarlayout and TabLayout

I'm trying to use a AppBarLayout with Toolbar a TabLayout component and a Viewpager, but I'm getting a black gap between toolbar and tablayout, and not really sure why. I've taken a look some examples of here and they don't work.
I put an image of my problem.
XML
<RelativeLayout
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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/home_appbarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:elevation="0dp">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
android:background="#color/white"
app:contentInsetStart="#dimen/margin_8"
app:contentInsetStartWithNavigation="#dimen/margin_8"
app:layout_collapseMode="pin"
app:paddingStart="0dp"
app:theme="#style/ThemeOverlay.AppCompat.ActionBar"
app:titleMarginStart="#dimen/margin_8">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="toolbar"/>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/rosa_apelucy">
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
app:tabMode="fixed"
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
android:background="#color/transparent"
android:elevation="6dp"
app:tabTextColor="#color/grey"
app:tabSelectedTextColor="#color/pink"
app:tabIndicatorColor="#color/pink"/>
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"/>
</android.support.design.widget.CoordinatorLayout>
</LinearLayout>
</RelativeLayout>
UPDATE QUESTION
<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:background="#color/blanco">
<android.support.design.widget.AppBarLayout
android:id="#+id/home_appbarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:elevation="0dp">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
app:contentInsetStart="#dimen/margin_8"
app:contentInsetStartWithNavigation="#dimen/margin_8"
app:layout_collapseMode="pin"
app:paddingStart="0dp"
app:theme="#style/ThemeOverlay.AppCompat.ActionBar"
app:titleMarginStart="#dimen/margin_8">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="toolbar"/>
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
app:tabMode="fixed"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/transparent"
android:elevation="6dp"
android:minHeight="?android:attr/actionBarSize"
app:tabTextColor="#color/gris_oscuro"
app:tabSelectedTextColor="#color/rosa_apelucy"
app:tabIndicatorColor="#color/rosa_apelucy"
android:layout_marginTop="#dimen/margin_25"/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</android.support.design.widget.CoordinatorLayout>

That doesn't seem to be a good practice-design in my view. You used CoordinatorLayout and TabLayout inside it and so much more issues.
Instead, use CoordinatorLayout as the root layout and after AppBarLayout as it's child, then Toolbar and TabLayout inside AppBarLayout.
So, the structure will be:
<CoordinatorLayout
<AppBarLayout
<Toolbar/>
<TabLayout/>
</AppBarLayout>
<ViewPager/>
<CoordinatorLayout/>
After that, use ViewPager inside CoordinatorLayout like this and add the following line of code:
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
Update: Support library:
<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:id="#+id/home_appbarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:elevation="0dp">
<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:theme="#style/ThemeOverlay.AppCompat.ActionBar">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="toolbar" />
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:elevation="6dp"
android:minHeight="?android:attr/actionBarSize"
app:tabMode="fixed" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
Working layout (AndroidX)
<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:id="#+id/home_appbarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:elevation="0dp">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
app:layout_collapseMode="pin"
app:theme="#style/ThemeOverlay.AppCompat.ActionBar">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="toolbar" />
</androidx.appcompat.widget.Toolbar>
<com.google.android.material.tabs.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:elevation="6dp"
android:minHeight="?android:attr/actionBarSize"
app:tabMode="fixed" />
</com.google.android.material.appbar.AppBarLayout>
<androidx.viewpager.widget.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>

Just remove
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="25dp"
android:background="#color/black">
</RelativeLayout>

TabLayout in Navigation Drawer is overlapping the Tolbar

I have used Navigation Drawer activity and implemented TabLayout but when application runs the toolbar is not visible only the tablayout in place of toolbar. But in preview pane toolbar is visible this happens when I run this app on a device. Help me out please
This is app_bar_main.xml
<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.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="#color/colorToolbar"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
app:contentInsetStartWithNavigation="0dp"
>
<ImageView
android:layout_width="#dimen/_40sdp"
android:layout_height="match_parent"
android:src="#drawable/logo_shopline"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="ShopLine"
android:gravity="center"
android:textSize="#dimen/_18sdp"
android:textColor="#color/colorShopLineText"
android:paddingLeft="#dimen/_2sdp"
/>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main" />
Here is content_main.xml
<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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".MainActivity"
tools:showIn="#layout/app_bar_main">
<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.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="#dimen/custom_tab_layout_height"
app:tabMode="fixed"
app:tabGravity="fill"
/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/appBarLayout"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />

It's actually because of two AppBarLayouts you have which android might not recognize the layout you have written.
Simply, remove the other AppBarLayout and make your layout like this:
<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="#color/colorToolbar"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
app:contentInsetStartWithNavigation="0dp">
<ImageView
android:layout_width="#dimen/_40sdp"
android:layout_height="match_parent"
android:src="#drawable/logo_shopline" />
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="ShopLine"
android:gravity="center"
android:textSize="#dimen/_18sdp"
android:textColor="#color/colorShopLineText"
android:paddingLeft="#dimen/_2sdp" />
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="#dimen/custom_tab_layout_height"
android:layout_gravity="bottom"
app:tabMode="fixed"
app:tabGravity="fill" />
</android.support.design.widget.AppBarLayout>

Please correct the line "layout_below"
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/appBarLayout"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />

make BottomNavigationView in bottom even if i use layout_scrollFlags to scroll Tollbar

My problem is BottomNavigationView never shows unless I scroll up.
So when I scroll up toolbar is hidden and my BottomNavigationView shows up.
I want it to stay at then bottom.
So i think my problem is with app:layout_scrollFlags.
main.xml
<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.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.Toolbar"
>
<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"
style="#style/ToolBar"/>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="fixed"
app:tabSelectedTextColor="#color/selectlite"
app:tabBackground="#drawable/tab_color_selector"
app:tabGravity="fill"/>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/recyclerview"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#color/cardview_shadow_start_color"
android:textAlignment="center"
tools:listitem="#layout/ticket_cardview_service"/>
<android.support.design.widget.BottomNavigationView
android:id="#+id/navigation_personall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_alignParentBottom="true"
android:background="#color/colorPrimary"
app:itemIconTint="#color/cardview_light_background"
app:itemTextColor="#color/cardview_light_background"
app:layout_scrollFlags="scroll|snap"
app:menu="#menu/personal_navigation_items"/>
</android.support.design.widget.CoordinatorLayout>

Move your BottomNavigationView outside of your CoordinatorLayout. It worked for me.
Something like:
<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.support.design.widget.BottomNavigationView
android:id="#+id/navigation_personall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
android:background="#color/colorPrimary"
app:itemIconTint="#color/cardview_light_background"
app:itemTextColor="#color/cardview_light_background"
app:layout_scrollFlags="scroll|snap"
app:menu="#menu/personal_navigation_items"/>
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#id/navigation_personall">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.Toolbar"
>
<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"
style="#style/ToolBar"/>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabBackground="#drawable/tab_color_selector"
app:tabGravity="fill"
app:tabMode="fixed"
app:tabSelectedTextColor="#color/selectlite"/>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/recyclerview"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#color/cardview_shadow_start_color"
android:textAlignment="center"
tools:listitem="#layout/ticket_cardview_service"/>
</android.support.design.widget.CoordinatorLayout>
</RelativeLayout>

Unable to hide Toolbar while scrolling RecyclerView, possible cause?

I am trying to hide the ToolBar as the RecyclerView gets scrolled, however, ToolBar doesn't hide or move at all. This is how I implemented it:
<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_height="wrap_content"
android:background="?colorPrimary"
android:elevation="#dimen/margin_8"
android:layout_width="match_parent"
android:id="#+id/appbar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
app:layout_scrollFlags="scroll|enterAlways"
android:layout_marginLeft="#dimen/list_toolbar_side_margin"
android:layout_marginRight="#dimen/list_toolbar_side_margin"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
android:background="?attr/colorPrimary">
<TextView
android:id="#+id/titleText"
android:text="#string/app_name"
android:gravity="start|center"
android:textSize="19sp"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<FrameLayout
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/homeTeamRView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:scrollbarStyle="outsideOverlay"
android:paddingLeft="#dimen/list_side_margin"
android:paddingRight="#dimen/list_side_margin"
android:paddingBottom="#dimen/margin_16" />
</FrameLayout>
How to fix ?

To solve this issue please add in Toolbar widget (android.support.v7.widget.Toolbar):
app:layout_scrollFlags="scroll|enterAlways"

<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:popupTheme="#style/AppTheme.PopupOverlay"
app:layout_scrollFlags="scroll|enterAlways"
/>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_eez_dine_home" />
As like above

Android Tabs (within tabs there should be scroll view) with collapse header

Android tabs with collapse header, this header is below Action bar where screen will be present, so tabs will be almost center of the layout
So first i need header to be scrolled and then after reaching some height then the scroll view within the selected tab should scroll.
Please Download zip file from below link
http://www.filedropper.com/profilescreenimp2

Make your layout as below:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
android:minHeight="?attr/actionBarSize"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:layout_scrollFlags="scroll|enterAlways">
<TextView
android:id="#+id/toolbar_title"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textStyle="bold"
style="#android:style/TextAppearance.Medium"
android:text="Toolbar Title" />
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
app:tabGravity="fill"
app:tabIndicatorColor="#android:color/white"
app:tabMode="fixed" />
</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
android:id="#+id/homeCoordinator"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/homeAppBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/homeCollapseToolbar"
android:layout_width="match_parent"
android:layout_height="350dp"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">
//This can be changed to ImageView
<com.daimajia.slider.library.SliderLayout
android:id="#+id/homeSliderLayout"
app:layout_collapseMode="parallax"
android:fitsSystemWindows="true"
android:layout_width="match_parent"
android:layout_height="350dp"/>
<android.support.v7.widget.Toolbar
android:id="#+id/homeToolbar"
android:title=""
android:layout_width="match_parent"
android:layout_height="115dp"
android:gravity="top"
android:minHeight="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:titleMarginTop="15dp" >
<ImageView
android:src="#drawable/ic_logo"
android:paddingLeft="10dp"
android:layout_gravity="center|top"
android:layout_width="wrap_content"
android:layout_height="35dp" />
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/homeTabLayout"
android:layout_marginBottom="15dp"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="bottom"
app:tabGravity="center"
app:tabIndicatorColor="#color/colorAccent" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/homeViewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>