Coordinate layout Overlapping container

Coordinate layout Overlapping container - android

I am using this layout to load the fragments in side it but when i run that on device it gives look like this.
Below is my code.Any suggest why framelayout is overlapping coordinate layout.
Thanks for help :)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:elevation="7dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.design.widget.CoordinatorLayout xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/cl_root_inner_main"
android:layout_width="match_parent"
android:layout_height="#dimen/toolbar_height"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/tool_rl"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
android:titleTextColor="#color/white"
app:popupTheme="#style/AppTheme.PopupOverlay">
<RelativeLayout
android:id="#+id/buttonsview"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/btnBack"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:padding="#dimen/x10"
android:src="#drawable/ic_arrow_back" />
<TextView
android:id="#+id/fragtitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="#string/select_district"
android:textColor="#color/white"
android:textSize="20sp"
android:visibility="invisible" />
<Button
android:id="#+id/btnPost"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:layout_marginEnd="#dimen/x10"
android:layout_gravity="center_horizontal"
android:text="#string/post"
android:textColor="#color/white"
android:textSize="12sp"
android:theme="#style/blue_button" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
<FrameLayout
android:id="#+id/container"
android:background="#color/orange"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>

this is a xml using coordinator layout, I think this will help you
<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="com.software.products.ui.activity.ToolbarUsedActivity"
android:layoutDirection="rtl">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<--!just use toolbar here-->
<com.software.android.view.ddToolbar
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>
<include layout="#layout/content_main2" />
</android.support.design.widget.CoordinatorLayout>

Related

Last CardView is not showing properly in DrawerLayout

I am trying to display cardViews on drawerLayout something like this:
CardView
But the last CardView is not showing properly.
My cardView.xml code looks like this :
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_margin="10dp"
card_view:cardCornerRadius="4dp"
card_view:cardElevation="10dp"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Drinks"
android:id="#+id/posTxt"
android:padding="10dp"
/>
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/image"
android:padding="10dp"
android:src="#drawable/ghost"
android:layout_below="#+id/posTxt"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Name"
android:id="#+id/nameTxt"
android:padding="10dp"
android:textColor="#color/colorGreen"
android:layout_below="#+id/image"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" This is the best drink"
android:id="#+id/descTxt"
android:padding="10dp"
android:layout_below="#+id/nameTxt"
android:layout_alignParentLeft="true"
/>
</RelativeLayout>
</android.support.v7.widget.CardView>
and my activity_main.xml code looks like this:
<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/drawyerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.hasan.tablayout.MainActivity">
<android.support.design.widget.CoordinatorLayout
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/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.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="fixed"
app:tabGravity="fill"/>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main"/>
<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.support.design.widget.NavigationView
android:layout_width="wrap_content"
android:layout_height="match_parent"
app:menu="#menu/navigation_menu"
android:layout_gravity="start"
app:headerLayout="#layout/navigation_header"/>
</android.support.v4.widget.DrawerLayout>
I added card_view:cardCornerRadius , card_view:cardElevation in my xml code. But i don't understand where is my mistake?

FragmentLayout overlapping content

The FraglemtLayout bar is overlapping the content of the page.
i.e. My TabLayout is overlapping the main content of the page.
This is MainActivity 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/lib/com.example.feelingoodlivinbeta.socialdreams_a1.MainMenuActivity"
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.example.feelingoodlivinbeta.socialdreams_a1.MainMenuActivity">
<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"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay">
</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.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.v4.view.ViewPager>
</android.support.design.widget.CoordinatorLayout>
This is model layout contains cardview; I don't know where the problem is located
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="250dp"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="horizontal"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_below="#id/fragmantRecycler">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:orientation="horizontal"
android:weightSum="1">
<LinearLayout
android:layout_width="56dp"
android:layout_height="match_parent"
android:layout_weight="0.06"
android:orientation="horizontal">
<ImageView
android:id="#+id/imageView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:src="#drawable/socialdreamlogo" />
</LinearLayout>
<TextView
android:id="#+id/nameTxt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="3.67"
android:padding="10dp"
android:text="TextView" />
</LinearLayout>
<ImageView
android:id="#+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:src="#drawable/placeholder" />
</LinearLayout>
</android.support.v7.widget.CardView>

Your problem seems to be related to this line:
xmlns:app="http://schemas.android.com/apk/lib/com.example.feelingoodlivinbeta.socialdreams_a1.MainMenuActivity"
replace it with:
xmlns:app="http://schemas.android.com/apk/res-auto"

View overlap Toolbar

I am trying do transparent toolbar that has to overlap other view. But conversely other view overlap toolbar.
In xml I specially used margintop for RelativeLayout that show overlapping. Actually I don't use marginTop for RelativeLayout.
xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".activity.activitys.ActivityImage">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:gravity="center">
<android.support.v7.widget.AppCompatTextView
android:id="#+id/action_bar_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Фото"/>
</android.support.v7.widget.Toolbar>
<RelativeLayout
android:layout_marginTop="30dp"
android:id="#+id/img_slideshow_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/img_border"
>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
<kz.dreamwings.zhaksyadam.activity.util.CircleIndicator
android:id="#+id/indicator"
android:layout_width="fill_parent"
android:layout_height="55dp"
android:padding="3dip"
android:background="#99000000"
android:layout_above="#+id/img_name"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"/>
</RelativeLayout>
</FrameLayout>

You are using FrameLayout which is basically for holding a single child. You cant manage the alignment of childrens in FrameLayout.
Your layout should be 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"
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"
android:gravity="center">
<android.support.v7.widget.AppCompatTextView
android:id="#+id/action_bar_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Фото" />
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:descendantFocusability="blocksDescendants"
android:scrollbars="none"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<RelativeLayout
android:id="#+id/img_slideshow_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/img_border">
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<kz.dreamwings.zhaksyadam.activity.util.CircleIndicator
android:id="#+id/indicator"
android:layout_width="fill_parent"
android:layout_height="55dp"
android:layout_above="#+id/img_name"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:background="#99000000"
android:padding="3dip" />
</RelativeLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>

change your code like this:
<FrameLayout 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"
xmlns:tools="http://schemas.android.com/tools"
android:background="#drawable/img_border"
tools:context=".activity.activitys.ActivityImage">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#android:color/transparent"
android:gravity="center">
<android.support.v7.widget.AppCompatTextView
android:id="#+id/action_bar_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Фото"/>
</android.support.v7.widget.Toolbar>
<RelativeLayout
android:layout_marginTop="30dp"
android:id="#+id/img_slideshow_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
.
.
.

Try this: add toolbar after relative layout and remove top margin .
.i.e:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".activity.activitys.ActivityImage">
<RelativeLayout
android:id="#+id/img_slideshow_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/img_border"
>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
<kz.dreamwings.zhaksyadam.activity.util.CircleIndicator
android:id="#+id/indicator"
android:layout_width="fill_parent"
android:layout_height="55dp"
android:padding="3dip"
android:background="#99000000"
android:layout_above="#+id/img_name"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignParentBottom="true"/>
</RelativeLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:gravity="center">
<android.support.v7.widget.AppCompatTextView
android:id="#+id/action_bar_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Фото"/>
</android.support.v7.widget.Toolbar>
</FrameLayout>

Display LinearLayout below RecyclerView

I'm using a RecyclerView to display a list of items, and I would like to show below the list a box with some details but I don't how to do it, I have tried a lot of things but I cant display the box I want.
My idea is implement something like in the image below:
Below is my 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"
tools:context="...MainActivity"
android:background="#color/backgroundColor">
<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" />
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/user_subscriptions"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="12dp"
android:paddingBottom="10dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
// HERE I'M TRYING TO ADD THE BOX.
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:src="#drawable/ic_add" />
</android.support.design.widget.CoordinatorLayout>
Any idea how can I do it? Thanks!

try this one hope this will help you.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
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:layout_above="#+id/bottomBox"
android:fitsSystemWindows="true">
<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"
android:background="?attr/colorPrimary" />
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/user_subscriptions"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="10dp"
android:paddingTop="12dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="15dp"
android:background="#color/colorPrimary" />
</android.support.design.widget.CoordinatorLayout>
<LinearLayout
android:id="#+id/bottomBox"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_alignParentBottom="true"
android:background="#android:color/white"
android:orientation="vertical" />
</RelativeLayout>

You can do it 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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="...MainActivity"
android:background="#color/backgroundColor">
<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" />
</android.support.design.widget.AppBarLayout>
// HERE I'M TRYING TO ADD THE BOX.
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<View
android:id="#+id/box"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
/>
<android.support.v7.widget.RecyclerView
android:id="#+id/user_subscriptions"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="12dp"
android:paddingBottom="10dp"
android:layout_above="#id/box"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</RelativeLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:src="#drawable/ic_add" />
</android.support.design.widget.CoordinatorLayout>

Use app:layout_behavior="#string/appbar_scrolling_view_behavior 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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="...MainActivity"
android:background="#color/backgroundColor">
<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" />
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/user_subscriptions"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="12dp"
android:paddingBottom="10dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
<LinearLayout
android:id="#+id/bottomBox"
android:layout_width="match_parent"
android:layout_height="60dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior
android:background="#android:color/white"
android:orientation="vertical" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:src="#drawable/ic_add" />
</android.support.design.widget.CoordinatorLayout>

Your RecyclerView has match_parent in height. so you cannot display anything below in because it will take all the screen height.

I tried too mych on how to force in a recyclerview below a view and i realised its a simple task.
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_height="wrap_content"
android:fillViewport="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/line1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center"
android:padding="16dp">
<Button
android:layout_below="#+id/recycler_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Create Group"
android:layout_gravity="center"
style="#style/Button.Primary"/>
<ImageView
android:id="#+id/image_view_group_image"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_margin="16dp"
android:layout_gravity="center"
android:scaleType="centerInside"
android:background="#color/colorPrimary"
android:src="#drawable/ic_edit_white_24dp"/>
<TextView
android:layout_below="#+id/image_view_group_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:layout_gravity="center"
android:text="Please add an icon for your group"/>
<android.support.design.widget.TextInputLayout
android:id="#+id/text_input_layout1"
android:layout_below="#+id/image_view_group_image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:hint="Type your group subject here">
<android.support.design.widget.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:id="#+id/text_input_layout"
android:layout_below="#+id/text_input_layout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:hint="Add Members">
<android.support.design.widget.TextInputEditText
android:id="#+id/text_input_layout_add_members"
android:layout_width="match_parent"
android:drawableRight="#drawable/ic_search_grey_600_24dp"
android:drawableEnd="#drawable/ic_search_grey_600_24dp"
android:layout_height="wrap_content" />
</android.support.design.widget.TextInputLayout>
</LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_below="#+id/line1"
android:layout_marginTop="16dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</RelativeLayout>

You can use NestedScrollView if you want to display RecycleView with other Views like (TextView, Button another recycleView ....) like this example: https://stackoverflow.com/a/63266559/7308789

button is not displaying in layout file android

This is my layout file.
<?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"
tools:context=".ActivityMain">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/toolbarLayer"
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>
<ListView
android:id="#+id/users"
android:layout_marginTop="40dp"
android:padding="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/toolbarLayer"
android:layout_above="#+id/button_add_new_user"
/>
<Button
android:id="#+id/button_add_new_user"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Add New User"
android:layout_alignParentBottom="true"
/>
</android.support.design.widget.CoordinatorLayout>
I want to display a button in bottom of the activity. but above code doesn't show a button.
Can anyone help me what is wrong here?

This will properly align your relative layout including Listview(above button) and button(parent bottom aligned) below toolbar.
<?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:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/toolbarLayer"
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>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/toolbarLayer"
android:layout_marginTop="?attr/actionBarSize"
>
<ListView
android:id="#+id/users"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/button_add_new_user"
/>
<Button
android:id="#+id/button_add_new_user"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Add New User"
android:layout_alignParentBottom="true"
/>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>

Wrap your listview and button in a relativelayout 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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".ActivityMain">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/toolbarLayer"
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>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="#+id/users"
android:layout_marginTop="40dp"
android:padding="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/toolbarLayer"
android:layout_above="#+id/button_add_new_user"
/>
<Button
android:id="#+id/button_add_new_user"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Add New User"
android:layout_alignParentBottom="true"
/>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
It should work now.

<android.support.design.widget.AppBarLayout
android:id="#+id/toolbarLayer"
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>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/toolbarLayer">
<ListView
android:id="#+id/users"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/button_add_new_user"
android:layout_marginTop="40dp"
android:padding="20dp" />
<Button
android:id="#+id/button_add_new_user"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:text="Add New User" />
</RelativeLayout>

Use this code..
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/toolbarLayer">
<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>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/toolbarLayer"
android:layout_marginTop="?attr/actionBarSize"
>
<ListView
android:id="#+id/users"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/button_add_new_user"
/>
<Button
android:id="#+id/button_add_new_user"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Add New User"
android:layout_alignParentBottom="true"
/>
</RelativeLayout>

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Coordinate layout Overlapping container - android

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