Develop Reference

AppBar background fills whole screen

My app contains an AppBar which I want to have a background image. So I set the image as to AppBarLayout:background, but the image doesn't fit the size of the Bar, but fills the whole screen. I want it to reach only to the end of the TabView, so it doesn't affect the the content below.
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:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:background="#drawable/dunkvert"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="200dp"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay">
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:text="TextView" />
</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.TabItem
android:id="#+id/tabItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="A" />
<android.support.design.widget.TabItem
android:id="#+id/tabItem2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="B" />
</android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>

The Toolbar is the one who actually represents your toolbar, try adding an image view to it inside a frame layout so it can go together with the text view:
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="200dp"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:text="TextView" />
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:src="#drawable/dunkvert" />
</FrameLayout>
</android.support.v7.widget.Toolbar>
or simply set the background of the toolbar to the desired image.
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="200dp"
android:background="#drawable/dunkvert"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay">
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:text="TextView" />
</android.support.v7.widget.Toolbar>

How can i put the element RecyclerView under the element Toolbar in the Android Layout file?

Hey i want in my android app that the recyclerlistview and the floatingActionButton not cut the toolbar. Here is my Layout:
<android.support.design.widget.CoordinatorLayout
android:id="#+id/main_content"
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">
<include
layout="#layout/toolbar_task_layout">
</include>
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView_task"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dp"
app:layout_anchor="#id/recyclerView_task">
</android.support.v7.widget.RecyclerView>
<android.support.design.widget.FloatingActionButton
android:id="#+id/floatingActionButton_task_openDialog_"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|right"
android:layout_margin="16dp"
android:src="#drawable/ic_add_black_36dp"
app:layout_anchor="#id/recyclerView_task"
android:clickable="true"
app:fabSize="normal"
app:layout_anchorGravity="bottom|right|end"/>
</android.support.design.widget.CoordinatorLayout>
Here you can see the problem:
Update:
Here is the toolbar layout
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/toolbar_task"
android:layout_alignParentTop="true"
android:background="?attr/colorPrimary"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="0 items selected"
android:id="#+id/counter_task"
android:textSize="18dp"
android:textColor="#ffffff"
android:textStyle="bold" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>

Try replacing your <include layout="#layout/toolbar_task_layout"></include>
with this:
<include layout="#layout/toolbar_task_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
EDIT: I assume you also want your FAB to be on the bottom right since this is the norm, try setting android:layout_alignParentBottom="true" and android:layout_alignParentRight="true" in your FAB and make the RecyclerViews height match_parent

try this make your toolbar android:layout_height to android:layout_height="?attr/actionBarSize"
<android.support.v7.widget.Toolbar
android:id="#+id/ac_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="exitUntilCollapsed"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" >

Use below code:
<android.support.design.widget.CoordinatorLayout
android:id="#+id/main_content"
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">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<include layout="#layout/toolbar_task_layout"/>
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView_task"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="0dp"
app:layout_anchor="#id/recyclerView_task"
android:layout_below="#+id/toolbar_task"/>
</RelativeLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/floatingActionButton_task_openDialog_"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|right"
android:layout_margin="16dp"
android:src="#mipmap/ic_launcher"
app:layout_anchor="#id/recyclerView_task"
android:clickable="true"
app:fabSize="normal"
app:layout_anchorGravity="bottom|right|end"/></android.support.design.widget.CoordinatorLayout>
I hope this will help.....

Android: CardView Coming On Action Bar

I have used recycler View to display CardView. I have done this in the navigation drawer Main Activity. But my card View is being displayed on Action Bar.
app_bar_main
<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="kb.niranjan.tvseries.MainActivity">
<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" />
<include layout="#layout/content_main" />
</RelativeLayout>
content_menu
<android.support.v7.widget.CardView android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="#+id/cv"
card_view:cardCornerRadius="4dp"
card_view:cardElevation="5dp"
android:layout_margin="08dp"
xmlns:android="http://schemas.android.com/apk/res/android"
card_view:cardBackgroundColor="#263238"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="06dp"
>
<ImageView
android:layout_width="41dp"
android:layout_height="58dp"
android:id="#+id/person_photo"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginRight="16dp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/person_name"
android:layout_toRightOf="#+id/person_photo"
android:layout_alignParentTop="true"
android:textSize="30sp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/person_age"
android:layout_toRightOf="#+id/person_photo"
android:layout_below="#+id/person_name"
/>
</RelativeLayout>
</android.support.v7.widget.CardView>
I want to display my cards below ActionBar

Change your app_bar_main
<LinearLayout 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:orientation="vertical"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary" />
<include layout="#layout/content_main" />
</LinearLayout>

First add include layout id: For Example
<include android:id="#+id/card_layout layout="#layout/content_main" />"
and in Toolbar add layout_above
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_above="#+id/card_layout"
android:background="?attr/colorPrimary"/>

android- toolbar extends the screen size

in my app I have an activity with 3 tabs implemented with view pager and tab layout, one of them is a chat fragment.
the problem is that at the bottom of this fragment layout i have EditText and send button, which are hidden under the screen borders, when i scroll down with the nested scrolling it can be seen in the images:
EditText and send button hidden
EditText and send button apear
the activity layout .xml:
<android.support.design.widget.CoordinatorLayout
android:id="#+id/activity_event_details"
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=".eventdetails.EventDetailsActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:fitsSystemWindows="true"
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:layout_alignParentTop="true"
android:background="?attr/colorPrimary"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll|enterAlways">
<ImageButton
android:fitsSystemWindows="true"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="right"
android:src="#drawable/ic_launcher"
android:id="#+id/event_creator_button"
android:background="#00000000"
android:nestedScrollingEnabled="true" />
</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:layout_below="#+id/toolbar"
android:background="?attr/colorPrimary"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
</android.support.design.widget.AppBarLayout>
<!--<LinearLayout-->
<!--android:layout_width="match_parent"-->
<!--android:layout_height="match_parent"-->
<!--android:orientation="vertical"-->
<!--app:layout_behavior="#string/appbar_scrolling_view_behavior">-->
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/tab_layout"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</android.support.design.widget.CoordinatorLayout>
the fragment layout(I don't think the problem is here but-for any case..):
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".eventdetails.EventChatFragment">
<ListView
android:id="#+id/messageListView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/linearLayout"/>
<LinearLayout
android:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:orientation="horizontal">
<EditText
android:id="#+id/messageEditText"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="1"/>
<Button
android:id="#+id/sendButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:enabled="false"
android:text="SEND"/>
</LinearLayout>
</RelativeLayout>
I can't figure out what is the reason the app is "extend" the screen, and how to fix it. tried to search a lot but nothing helped..
thank's a lot!

I assume you created this activity layout through the android studio wizard choosing e.g. basic layout? Open the visual editor and you will see your LinearLayout with height=match_parent will have a hidden bottom part. For me I changed the android.support.design.widget.CoordinatorLayout to RelativeLayout and used this to place the content below the toolbar.
Watch the blue border: http://postimg.org/image/dz1x2y6gb/
http://postimg.org/image/xse0vnju3/
I also came across this problem when noticing that the last items of my ListView weren't showing.
EDIT
try this:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="#+id/activity_event_details"
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=".eventdetails.EventDetailsActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:fitsSystemWindows="true"
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:layout_alignParentTop="true"
android:background="?attr/colorPrimary"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll|enterAlways">
<ImageButton
android:fitsSystemWindows="true"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="right"
android:src="#drawable/ic_launcher"
android:id="#+id/event_creator_button"
android:background="#00000000"
android:nestedScrollingEnabled="true" />
</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:layout_below="#+id/toolbar"
android:background="?attr/colorPrimary"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
</android.support.design.widget.AppBarLayout>
<!--<LinearLayout-->
<!--android:layout_width="match_parent"-->
<!--android:layout_height="match_parent"-->
<!--android:orientation="vertical"-->
<!--app:layout_behavior="#string/appbar_scrolling_view_behavior">-->
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/appBarLayout"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</RelativeLayout>

How to display floating action button on bottom right corner - android

I am using this layout file.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="#+id/main_layout"
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=".ActivityStartShopping">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:background="#color/primary"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"/>
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/toolbar"
android:background="#color/primary"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/tab_layout"
android:paddingTop="20dp"
android:background="#color/windowBackground"
android:layout_above="#id/bottomButtons"
>
</android.support.v4.view.ViewPager>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:clickable="true"
android:src="#drawable/cart"
android:layout_gravity="bottom|end"
/>
</RelativeLayout>
For me Floating action button is displaying in top left corner.
How to display it bottom right corner.

Try this code:
<android.support.design.widget.FloatingActionButton
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
app:pressedTranslationZ="12dp"
app:elevation="6dp" />
It's better to use CoordinatorLayout

Change your root RelativeLayout to android.support.design.widget.CoordinatorLayout

you have to include the dependencies for design which is like this, this will be added under the dependencies block of the app module of the build.gradle
compile 'com.android.support:design:23.1.1'
without this you will not be able to use CoordinatorLayout, FloatingActionButton
I have changed few resource as i don't have resource which you have showed in your question.
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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<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:id="#+id/main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ActivityStartShopping">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:background="#color/primary"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/toolbar"
android:background="#color/primary"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar" />
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/tab_layout"
android:background="#android:color/holo_blue_dark"
android:paddingTop="20dp">
</android.support.v4.view.ViewPager>
<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_alignParentTop="true"
android:layout_alignParentLeft="true"
android:clickable="true"
android:src="#android:drawable/sym_contact_card" />
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
this should look like this