Develop Reference

fitSystemWindows with windowTranlucentStatus and windowTranslucentNavigation makes Toolbar too tall

I'm trying to make my app bleed under the status bar and the navigation bar. I got the layouts to work using fitSystemWindows = true with just the status bar translucent but when I make the navigation bar as well, the toolbar appears to react as if it needs to fill under the status bar and the notification bar.
The toolbar appears to function normally when in landscape for some reason.
This double "translucent" bar effect also makes the NestedScrollView extends beyond the bottom of the page. I am also not sure how to make the FAB fit.
On another note, I originally wrote the layout with a CoordinatorLayout. This added the extra problem that the NestedScrollView then scrolls up to the bottom of where the toolbar should be, not where it is. I think, however, that the NestedScrollView respected the bottom screen boundary properly with CoordinatorLayout.
Here's the xml for the layout:
<?xml version="1.0" encoding="utf-8"?>
<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/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.constraint.ConstraintLayout
android:id="#+id/constraint"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.NestedScrollView
android:id="#+id/nested_scroll_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toBottomOf="#id/toolbar">
<LinearLayout
android:id="#+id/parent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#00000000"
android:clipToPadding="false"
android:orientation="vertical"
android:paddingBottom="74dp"/>
</android.support.v4.widget.NestedScrollView>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintTop_toTopOf="parent"
android:background="#color/nav_color_1_bright"
android:elevation="4dp"
android:fitsSystemWindows="true"
app:navigationContentDescription="#string/open_nav_menu"
app:navigationIcon="#drawable/ic_dehaze_white_24dp"/>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_margin="16dp"
android:clipToPadding="false"
android:fitsSystemWindows="true"
android:onClick="createNew"
android:src="#drawable/ic_add_black_24dp"
app:backgroundTint="#color/darkAccent"
app:fabSize="normal" />
</android.support.constraint.ConstraintLayout>
<android.support.design.widget.NavigationView
android:id="#+id/navigation"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/nav_header"
app:itemBackground="#drawable/nav_item">
<ListView
android:id="#+id/drawer_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="#null"
android:dividerHeight="0dp"
android:fitsSystemWindows="true" />
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>
I apply the following 'Light Theme' to the Activity programmatically.
<style name="AppTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</item>
<item name="android:windowTranslucentStatus">true</item>
<item name ="android:windowTranslucentNavigation">true</item>
</style>
<style name="LightTheme" parent="AppTheme">
<item name="android:colorPrimary">#color/lightPrimary</item>
<item name="android:colorPrimaryDark">#color/lightPrimaryDark</item>
<item name="android:colorAccent">#color/lightAccent</item>
<item name="android:navigationBarColor">#color/lightPrimaryDark</item>
<item name="actionOverflowButtonStyle">#style/OverflowMenuButtonStyleDark</item>
</style>
Here's a preview of the layout: (bigger version here)

Navigationbar covers Vierpager content

I have a tab layout and each tab is represented my a fragment in the viewpager. Now I tried to attach a Toolbar to the bottom but the android navigation bar keeps overlapping it. Adding a margin is not a option because it looks very strange on devices without a navigation bar on the screen.
XML from main activity:
<?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: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="?attr/actionBarSize"
android:layout_weight="1"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:title="#string/app_name">
</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="#string/fragment_map_title" />
<android.support.design.widget.TabItem
android:id="#+id/tabItem2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/fragment_list_title" />
</android.support.design.widget.TabLayout>
</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>
XML from fragment:
<?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" >
<com.google.android.gms.maps.MapView
android:id="#+id/mapView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#id/ballon_info_bar" />
<android.support.v7.widget.Toolbar
android:background="#2a3b4c"
android:id="#+id/ballon_info_bar"
android:layout_width="match_parent"
android:layout_height="120dp"
android:layout_alignParentBottom="true"
android:layout_marginBottom="20dp">
</android.support.v7.widget.Toolbar>
</RelativeLayout>
Style XML:
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</item>
<item name="android:windowTranslucentNavigation">true</item>
</style>
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
</resources>
I found several other posts about this topic but none of them solved my problem.
EDIT1: The margin in the image is just for visualization.
EDIT2: According to the blueprint, the ViewPager is alredy behind the navigationbar

The solution is:
Setting android:fitsSystemWindows to false and setting android:windowTranslucentNavigation to false in style.xml

Elevation / shadow not working on my app

I'm creating an android app for our capstone project. I'm using API 23. I add elevation on my toolbars and other components yet the shadows aren't appearing. Is my theme ruining it?
<!-- Base application theme. -->
<style name="ThesisTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</item>
<item name="android:colorButtonNormal">#color/colorButton</item>
<item name="android:textColorPrimary">#color/textColorPrimary</item>
<item name="android:statusBarColor">#color/colorPrimaryDark</item>
<item name="android:navigationBarColor">#color/colorPrimary</item>
<item name="colorControlNormal">#c5c5c5</item>
<item name="colorControlActivated">#color/colorAccent</item>
<item name="colorControlHighlight">#color/colorPrimaryDark</item>
<item name="windowNoTitle">true</item>
<item name="windowActionBar">false</item>
<!--Datepicker-->
<item name="android:datePickerDialogTheme">#style/MyDatePickerDialogTheme</item>
</style>
when i try to include the toolbar then run the program to my phone/ emulator the shadow wont display. even with cardview
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/activity_login"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="capstoreit.capstoreit.Login.Login"
android:background="#drawable/login_bg">
<!--Layout for Login and Signup-->
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:elevation="10dp"
android:layout_height="wrap_content">
<!--Toolbar-->
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:local="http://schemas.android.com/apk/res-auto"
android:id="#+id/login_toolbar"
android:layout_width="match_parent"
android:elevation="10dp"
local:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
local:popupTheme="#style/ThemeOverlay.AppCompat.Light"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/new_logo"
android:adjustViewBounds="true"
android:padding="5dp"
android:id="#+id/app_logo" />
</android.support.v7.widget.Toolbar>
<!--Tab-->
<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:elevation="10dp"
android:background="#color/textColorPrimary"
app:tabSelectedTextColor="#color/colorAccent"
/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.8"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_alignParentStart="true"
>
</android.support.v4.view.ViewPager>
<ImageView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_weight="0.2"
/>
</LinearLayout>
</RelativeLayout>
Screenshot:
After changing to app:elevation

I was able to fix my erro by removing this on my Android Manifest:
android:hardwareAccelerated="false"

use this if you are using support library for older versions too
app:elevation
use this if you are not using support library
android:elevation

Content hides under appbar layout

In my app contet is hidden under appbarlayout. I don't expect that behaviour!
Android 23 PREVIEW
ANDROID 21 - test on DEVICE
ANDROID 21 - test on DEVICE content hidden under toolbar
Altough my content scroll down as expect, when it goes up content is hidden under toolbar. I uploaded also android 23 preview because there is visible that actually toolbar is align Top behind status bar. Working on device content go up where is should be moved if the preview was correct. But toolbar view is under status bar not behind. I dont know where is the problem.
Style
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
<item name="android:statusBarColor">#color/colorPrimaryDark</item>
</style>
<style name="AppTheme.NoStatusBar" parent="AppTheme.NoActionBar">
<item name="android:windowTranslucentStatus">true</item>
<item name="android:windowTranslucentNavigation">true</item>
<item name="windowActionBarOverlay">true</item>
<item name="android:windowActionBarOverlay">true</item>
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
</style>
UPDATED
ok I found the solution. It was so dump. Just my scrollView was scrolled down due to its last child which was gaining focus - recycler view.
No I set on cardView focusableInTouchMode="true" and the last element on false
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:fitsSystemWindows="true"
android:fillViewport="true">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:cardCornerRadius="4dp"
android:layout_margin="4dp"
app:contentPaddingTop="24dp"
android:focusableInTouchMode="true"/>
...
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view_overbid_history"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:maxHeight="200dp"
android:focusable="false"
android:focusableInTouchMode="false"/>
android.support.v4.widget.NestedScrollView>

I'm sharing part of my code with you, it's working for me in my app:
<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:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="240dp"
android:fitsSystemWindows="true">
<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="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:expandedTitleMarginBottom="140dp">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.75">
<ImageView
android:id="#+id/store_detail_background"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop" />
...
</FrameLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin" />
</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"
android:fillViewport="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<FrameLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v4.widget.NestedScrollView>
v21/styles.xml:
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
<item name="android:statusBarColor">#color/...</item>
<item name="windowActionModeOverlay">true</item>
...
</style>

Toolbar behind status bar with API 21

I've a fragment with a CoordinatorLayout
When i run the app with API 19 the behavior is right :
The toolbar is below the status bar and the FAB button of the main_activity go away :
But with the API 21 and + :
The toolbar is behind the status bar and the FAB button of the main_activity don't go away :
Layout file:
<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/caves_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/caves_appbar"
android:layout_width="match_parent"
android:layout_height="#dimen/detail_backdrop_height"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/caves_collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimaryDark"
app:expandedTitleMarginStart="78dp"
app:expandedTitleMarginEnd="124dp">
<ImageView
android:id="#+id/caves_backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:background="#drawable/drawer_header_bg"
app:layout_collapseMode="parallax"
android:adjustViewBounds="true"
android:scaleType="centerCrop" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal">
</LinearLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/caves_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_collapseMode="pin" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/caves_recyclerview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
<android.support.design.widget.FloatingActionButton
android:id="#+id/caves_fab"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
app:layout_anchor="#id/caves_appbar"
app:layout_anchorGravity="bottom|right|end"
android:src="#drawable/ic_discuss"
android:layout_margin="#dimen/fab_margin"
android:clickable="true"/>
</android.support.design.widget.CoordinatorLayout>
I've add a specify style-v21 xml file
<resources>
<style name="AppTheme" parent="Base.Theme.Design">
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
<item name="android:statusBarColor">#android:color/transparent</item>
<item name="android:windowTranslucentStatus">true</item>
<item name="android:windowSharedElementsUseOverlay">false</item>
</style>
</resources>
I'dont find and understand the problem.

add android:fitsSystemWindows="false"to the CoordinatorLayout

Had a similar problem (exemplified here)
How I made it work was to add android:fitsSystemWindows="false" to the AppBarLayout and have it on true on the CoordinatorLayout

take off this line:
<item name="android:windowTranslucentStatus">true</item>