Develop Reference

removing the shadow or blank space form AppBarLayout +Toolbar [duplicate]

I tried to remove the shadow below the toolbar with the Theme.AppCompat.Light.NoActionBar, using every recommendation of people who have ever answer it before, but no one worked. I tried
<item name="android:windowContentOverlay">#null</item>
and
<item name="android:windowContentOverlay">#drawable/solid_line</item> ....
<shape xmlns:android="http://schemas.android.com/apk/res/android"android:shape="rectangle">
<solid android:color="#color/accueil_color" />
<size android:height="15dp" />
</shape>
and with this,
android:elevation="0dp"
the shadow goes from the top of the screen but not disapear.
Have you any idea for totally remove this shadow line ??

I'm not an expert but I run into the same problem just a few hours ago. So the idea here is that with AppCompat we have to manage the library attributes rather than Android attributes. In other words, instead of android:elevation try app:elevation:
<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/appbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fitsSystemWindows="true"
app:elevation="0dp">
<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="match_parent"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.AppBarLayout>
EDIT :
I just tried another option without AppBarLayout. This way works perfectly fine for me, the shadow is completely gone. So I suspect the problem is in your other View. I don't think it's your ToolBar drops the shadow.
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
app:elevation="0dp" />

use app:elevation="0dp" instead of android:elevation

I had the same problem. Applying app:elevation="0dp" on android.support.design.widget.AppBarLayout solves the issue

Add app:elevation="0dp" in AppBarLayout and shadow will be hide.

I had the same problem.
If your Toolbar is inside android.support.design.widget.AppBarLayout
Adding app:elevation="0dp" on android.support.design.widget.AppBarLayoutwill solve your problem.
Else add app:elevation="0dp" on Toolbar.
<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/appbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fitsSystemWindows="true"
app:elevation="0dp">
<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="match_parent"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
Hope it helps :)

Just use after the super.onCreate(savedInstanceState);
if(getSupportActionBar() != null)
{
getSupportActionBar().setElevation(0);
}

Just put your AppBarLayout inside of a LinearLayout on a separated XML file, and then, include this XML to your main XML.

#DmitryO
Hum my xml is like this, i don't have android.support.design.widget.AppBarLayout, just the toolbar widget,
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:fab="http://schemas.android.com/apk/res-auto"
xmlns:materialdesign="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"
android:theme="#style/AppThemeAccueil">
<View xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="#dimen/statusBarHeight"
android:background="#color/accueil_colorDark"
android:elevation="#dimen/statusBarElevation"/>
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
android:popupTheme="#style/AppThemeAccueilToolbar"
android:theme="#style/AppThemeAccueilToolbar"
android:id="#+id/toolbarAccueil"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
materialdesign:elevation="0dp"
android:elevation="0dp"
android:outlineProvider="background"
android:layout_marginTop="#dimen/appBarTopMargin" >
</android.support.v7.widget.Toolbar>
</RelativeLayout>
Have I to had this ? (I think this will not change the result)

If your are not using Toolbar on the Layout and you have the default toolbar from AppCompactActivity this can help you
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getSupportActionBar().setElevation(0);
At least it worked for me.
Regards,

In Kotlin, use:
supportActionBar!!.elevation = 0.0f
Regards!

How to make Toolbar in AppBarLayout to have transparent background

I need to make transparent toolbar with buttons, but AppBarLayout adds white background to toolbar. Is there any way I can make toolbar which is in AppBarLayout to be transparent.
<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="?attr/activityBackgroundColor"
>
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
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/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
app:elevation="0dp"
app:theme="#style/AppTheme.Overlay"
>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#android:color/transparent"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|enterAlways"
app:theme="#style/Toolbar.Translucent"
/>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>

Most of the times we want the toolbar to be translucent because we want to show content behind it. The problem is that the colors of the content behind the toolbar can collide with the color of the toolbar elements/text (up/back arrow for example).
For that reason you'll see in a lot of implementations that the toolbar is actually not transparent but translucent with a gradient.
You can obtain this with the next code
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#drawable/background_toolbar_translucent" />
background_toolbar_translucent.xml
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android">
<gradient
android:angle="270"
android:endColor="#android:color/transparent"
android:startColor="#color/black_alpha_40"/>
colors.xml
<color name="black_alpha_40">#66000000</color>
You can play with different values on the gradient, what I've found is that for white elements, the black 40% works fine.
Another thing that you might want to do is to hide the title of the toolbar.
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
And show the up affordance...
getSupportActionBar().setDisplayShowTitleEnabled(false);

Custom layout in Toolbar with TabLayout below

Right now, I have a normal looking Toolbar. What I want to do is add a custom layout between the Toolbar and the TabLayout, as shown in the picture below:
On the left is what my Toolbar looks like now, and on the right is what I want it to look like.
As you can see, I want to add an ImageView and two TextViews to the layout.
How can I achieve this?
Here is my current 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:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<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"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay" />
<android.support.design.widget.TabLayout
android:id="#+id/tablayout"
android:layout_width="match_parent"
android:layout_height="48dp"
app:layout_scrollFlags="scroll|enterAlways" />
</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.CoordinatorLayout>

AppBarLayout extends LinearLayout, so you can add any number of views to your AppBarLayout: there's no reason to add the views specifically to your Toolbar.
You'll want to make sure you use the same layout_scrollFlags as your Toolbar if you want them to scroll the same.

Toolbar is just a ViewGroup, you can customize is as much as you want.
Try this :
<android.support.v7.widget.Toolbar
style="#style/ToolBarStyle"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="#dimen/abc_action_bar_default_height_material">
<ImageView
android:layout_width="wrap_content"
android:contentDescription="#string/logo"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="#drawable/ic_launcher"/>
This should bring your imageView in center of toolbar.

How can i put an ImageView underneath a transparent toolbar?

I'm trying to achieve something like this
. I want a transparent toolbar/statusbar with an ImageView underneath them.
I wasn't able to make the toolbar transparent so I tried using CollapsingToolbarLayout and removing the scroll behaviour. It worked but I wasn't able to make the status bar transparent.
Is there a way to make the toolbar transparent and put an ImageView beneath it or is there a better way to implement it?
Edit:
Standard xml-layout. I didn't change anyhting so far.
<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"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main" /> </android.support.design.widget.CoordinatorLayout>

Try this.
toolbar.getBackground().setAlpha(0);
Or better -
transparent Actionbar with AppCompat-v7 21

I created a project to try the transparent status bar.
you need add the following to the styles (for v19 and v21)
<!-- Make the status bar traslucent -->
<style name="AppTheme" parent="AppTheme.Base">
<item name="android:windowTranslucentStatus">true</item>
</style>
This is the layout xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res-auto"
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:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:theme="#style/AppTheme.AppBarOverlay">
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/sun"/>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#android:color/transparent"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
... the rest of my xml
this is the output from the layout of a v19 device.

Toolbar elevation is not at the bottom

I'm trying to create an extended toolbar, something like:
My activity xml:
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
tools:ignore="MergeRootFrame" >
<android.support.v7.widget.Toolbar
android:id="#+id/my_toolbar"
android:layout_height="128dp"
android:layout_width="match_parent"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary" />
From some reason, the elevation is not at the bottom of the Toolbar:
Any idea?
Thanks!

Finally found it - there are two toolbars displayed, the decor one and the one I've added. Changed my theme to inherit from "Theme.AppCompat.Light.NoActionBar" and now only my toolbar is visible.
Thanks anyway!