Develop Reference

How to show BottomNavigation CoordinatorLayout in Android

In my application I want show BottomNavigation bottom of CoordinatorLayout and for this I write below 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"
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/main.appbar"
android:layout_width="match_parent"
android:layout_height="150dp"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/main.collapsing"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<include
android:id="#+id/mainToolbar"
layout="#layout/toolbar_main" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<com.aurelhubert.ahbottomnavigation.AHBottomNavigationViewPager
android:id="#+id/mainViewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/mainBottomNavigation"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<com.aurelhubert.ahbottomnavigation.AHBottomNavigation
android:id="#+id/mainBottomNavigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
app:layout_anchorGravity="bottom"
app:selectedBackgroundVisible="true" />
</android.support.design.widget.CoordinatorLayout>
But when run application show me BottomNavigation top of CoordinatorLayout!
How can I show BottomNavigation bottom of CoordinatorLayout ?

I hope the answer is not too late. I just had the same problem, I used android:layout_gravity="bottom".
I have a Toolbar, a BottomNavigationView, and in the middle, I have a FrameLayout that is used as a placeholder for a fragment. Here is my XML 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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/bg_main"
android:minHeight="?attr/actionBarSize">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
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/colorTab"
app:layout_scrollFlags="scroll|enterAlways"
/>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/fragment_placeholder"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
>
<android.support.v4.view.ViewPager
android:id="#+id/slide_viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</FrameLayout>
<android.support.design.widget.BottomNavigationView
android:id="#+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
app:itemBackground="#color/colorTab"
app:itemIconTint="#drawable/bottom_navigation_toolbar"
app:itemTextColor="#drawable/bottom_navigation_toolbar"
app:menu="#menu/bottom_bar"
/>
</android.support.design.widget.CoordinatorLayout>
Also check out this question, it uses almost the same layout, and it also shows how to change the behavior of the BottomNavigationView so that it hides when you scroll. If you wish to implement that feature make sure to create the class BottomNavigationBehavior (or whatever you want to call it) and add this line to your BottomNavigationView in XML:
app:layout_behavior="com.yourpackage.yourpackage.BottomNavigationBehavior"
Hope it helps!

This helps me resolve the issue of bottom of view going behind bottom navigation bar.
I have resolved it by:
adding app:layout_behavior="com.google.android.material.behavior.HideBottomViewOnScrollBehavior"
to the BottomNavigationView.
Changing the parent layout of ActivityMain to CoordinatorLayout &
Adding android:layout_gravity="bottom" to BottomNavigationView.

Hide ActionBar on ListView scroll contained in a Fragment within a ViewPager

I want to hide the ActionBar on ListView scroll.
The official documentation suggests we use this pattern to do so:
<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">
<! -- Your Scrollable View -->
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
...
app:layout_scrollFlags="scroll|enterAlways">
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
I can't, however, use this pattern since my "Scrollable view" is a ListView inside a Fragment that is rendered inside the ViewPager. I use the following code in my app:
<?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:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.x.y.MainActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="#dimen/appbar_padding_top"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="48dp"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
style="#style/AppTabLayout"
android:id="#+id/tabs"
app:tabTextAppearance="#style/AppTabTextAppearance"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</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.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:layout_margin="#dimen/fab_margin"
android:src="#mipmap/ic_add_white_24dp" />
</android.support.design.widget.CoordinatorLayout>
I've tried putting the ViewPager inside the AppBarLayout, and the Toolbar and TabLayout in a CollapsibleToolbarLayout. However, if I do that, the ViewPager layout isn't even shown and the ActionBar is permanently hidden.
What do I do?

CoordinatorLayout doesn't work with listview. So either replace the listview with a recyclerview (which i would highly recommend) or put your listview inside a NestedScrollView. The xml code you posted is ok. If any of these is not working then post your fragment's xml code and hit me up again

Android Design Library: SwipeRefreshLayout don't detect swipe over CollapsingToolbarLayout

In my app I am using CollapsingToolbarLayout following NestedScrollView inside SwipeRefreshLayout. What I want from SwipeRefreshLayout is to detect swipe over from CollapsingToolbarLayout, but its detecting over from NestedScrollView and ignoring swipe on CollapsingToolbarLayout. Here is my XML:
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.CoordinatorLayout
android:id="#+id/rootLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.SwipeRefreshLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/swipe"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="256dp"
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:expandedTitleMarginStart="#dimen/expanded_toolbar_title_margin_start"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="#+id/profilePic"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/ic_split_big_profile"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.7" />
<include
android:id="#+id/toolbar_layout"
layout="#layout/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|enterAlways" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:id="#+id/transactions_scroll"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="500dp">
</RelativeLayout>
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.FloatingActionButton
android:id="#+id/add_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|right"
android:layout_marginBottom="#dimen/fab_margin_bottom"
android:layout_marginRight="#dimen/fab_margin_right"
android:onClick="addTxn"
android:src="#drawable/ic_action_add_transaction_light"
app:elevation="6dp"
app:fabSize="normal" />
</android.support.v4.widget.SwipeRefreshLayout>
</android.support.design.widget.CoordinatorLayout>
</RelativeLayout>
Has anybody used this sort of thing?

As stated in AppBarLayout docs, it has to be direct child of CoordinatorLayout
This view depends heavily on being used as a direct child within a
CoordinatorLayout. If you use AppBarLayout within a different
ViewGroup, most of it's functionality will not work.
Thus, I'm not sure where the SwipeToRefreshLayout has to be included to work together with the CollapsingToolbar, as NestedScrollView has to be direct child too.
Here is another response that helps to attach the SwipeRefreshLayout and activate it only when the appBar is uncollapsed, but they are not using a NestedScrollView, which doesn't work for me :(
EDIT I found a solution for my problem: The ListView I used, had to be set as nested scroll instead of put it inside a NestedScrollView, or replaced with RecycleView:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
listView.setNestedScrollingEnabled(true);
}
So, a solution for your issue should be to wrap the NestedScrollView inside the SwipeRefreshLayout.

CoordinatorLayout with Tabs in android?

I am new for CoordinatorLayout i want to use coordinatorLayout in my application but it cause some problem in display CollapsingToolbarLayout view.
i want to design view like whatsApp screen Tabs in Coordinatorlayout
My 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"
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/appbar"
android:layout_width="match_parent"
android:layout_height="#dimen/detail_backdrop_height"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fitsSystemWindows="false"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginEnd="32dp"
app:expandedTitleMarginStart="24dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
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.v7.widget.Toolbar>
</LinearLayout>
<android.support.design.widget.TabLayout
android:id="#+id/tabanim_tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/tabanim_viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
// child view
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>`

I Found Solution for Tabs in CoordinatorLayout
<?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/tabanim_maincontent"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/tabanim_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/tabanim_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.v7.widget.Toolbar>
/***
Here You can add custom layout
**/
<android.support.design.widget.TabLayout
android:id="#+id/tabanim_tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/tabanim_viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>

CoordinatorLayout is delicate sometimes, I suggest you to follow the next example using it as a base and adding more complexity step by step if you need:
https://gist.github.com/RicardAparicio/f41523daaa0edbe0b4399549fff4da3f
Hope it helps.

"but it cause some problem in display" doesn't say what kind of problem You had, glad You found the solution though.
There is indeed problem in both 22.2.1 and 23.0.1 support libraries with TabLayout and ViewPager in CoordinatorLayout while using fitsSystemWindows="true". While using RecyclerView and scrolling it up TabLayout header goes into status bar while it's background color is not being pinned.
I might only imply that above was one of Your problems, if yes then removing fitsSystemWindows is not best solution as application will loose a lot of it's look in 5.0+ Android.
It is not good solution either but I managed to fix this issue by adding nested android.support.design.widget.CoordinatorLayout, but if You use DrawerLayout there, then nothing is needed as shown in this example: https://github.com/chrisbanes/cheesesquare

CoordinatorLayout, AppBarLayout and ToolBar - Toolbar doesn't scroll off the screen

I am trying to make my ToolBar scroll off the screen, when I scroll up my ViewPager(ViewPager is inside a fragment that is placed in FrameLayout) and show the ToolBar when I scroll down. I am trying to achieve this using the Support Design Library.
Here is my 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.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_scrollFlags="scroll|enterAlways"
android:background="?attr/colorPrimaryDark"
android:elevation="4dp"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar" >
<TextView
android:id="#+id/toolbar_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textColor="#android:color/white"
android:textSize="20sp" />
<ProgressBar
android:id="#+id/progressBar"
android:layout_width="32dp"
android:layout_height="32dp"
android:layout_gravity="right"
android:indeterminate="true"
android:visibility="gone" />
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/detail_fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.xx.xxx.DetailActivity"
tools:ignore="MergeRootFrame"
app:layout_behavior="#string/appbar_scrolling_view_behavior" >
</FrameLayout>
</android.support.design.widget.CoordinatorLayout>
But, the toolbar doesn't respond to scroll. What am I doing wrong?

You should have something like 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: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/appbar"
android:layout_width="match_parent"
android:layout_height="#dimen/detail_backdrop_height"
android:fitsSystemWindows="true"
android:theme="#style/AppTheme">
<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="#color/primary"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="#+id/backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
android:src="#drawable/header"
app:layout_collapseMode="parallax" />
<android.support.v7.widget.Toolbar
android:id="#+id/app_bar"
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:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<include layout="#layout/your_scrollable_view" />
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="#dimen/fab_margin"
android:clickable="true"
android:onClick="registrarNuevoUsuario"
android:src="#drawable/ic_action_check"
app:layout_anchor="#id/appbar"
app:layout_anchorGravity="bottom|right|end" />
</android.support.design.widget.CoordinatorLayout>
dimens.xml
<resources>
<dimen name="fab_margin">16dp</dimen>
<dimen name="detail_backdrop_height">256dp</dimen>
</resources>

If you just want the toolbar to enter/exit AppBarLayout is sufficient. You do not need a CollapsingToolbarLayout. Try changing your FrameLayout into a android.support.v4.widget.NestedScrollView

Similar issue was reported on google https://code.google.com/p/android/issues/detail?id=201822
But after release of Android Support Library, revision 23.2.1 (March 2016) This bug is solved.
Fixed : AppBarLayout not scrolling out completely when used with fitsSystemWindow
update Support Library to Android Support Library to 23.2.1 OR to further.

What do you have inside your ViewPager? A ListView or a RecyclerView? Either way you might want to consider adding the behaviour to that scrolling element.
app:layout_behavior="#string/appbar_scrolling_view_behavior"
and most importantly and as stated by this other SO answer, don't forget to update your build tools to 22 and your gradle references to at least v 22.20 of both the component and the Design Support Library:
compile 'com.android.support:design:22.2.0'
compile 'com.android.support:recyclerview-v7:22.2.0'
Check out this for a complete tutorial.