Translucent/Transparent status bar + CoordinatorLayout + Toolbar + Fragment

I have following setup:

The problem is, I can't get the statusbar transparent in this case. What I do is following:

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public void themeNavAndStatusBar(Activity activity)
{
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP)
        return;

    Window w = activity.getWindow();
    w.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
    w.setFlags(
            WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION,
            WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
    w.setFlags(
            WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS,
            WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
    w.setNavigationBarColor(activity.getResources().getColor(android.R.color.transparent));

    w.setStatusBarColor(activity.getResources().getColor(android.R.color.transparent));
}

The statusbar is solid colored in this case, and the views are not drawn underneath it... Why?

What I want

I want a toolbar, that is scrolled of the screen and hiding completely while the content underneath this toolbar should fitScreen and be drawn behind the transparent nav bar.

Layouts

Here's my main activity:

<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/clMain"
    android:fitsSystemWindows="true"
    android:background="?attr/main_background_color"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appBarLayout"
        android:fitsSystemWindows="true"
        android:background="@null"
        app:elevation="0dp"
        app:contentInsetLeft="0dp"
        app:contentInsetStart="0dp"
        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:elevation="4dp"
            android:theme="?actionBarThemeStyle"
            app:popupTheme="?actionBarPopupThemeStyle"
            app:layout_scrollFlags="scroll|enterAlways">

            <LinearLayout
                android:orientation="vertical"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content">

                <LinearLayout
                    android:orientation="horizontal"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content">

                    <ImageView
                        android:id="@+id/ivToolbarDataSource"
                        android:layout_gravity="center_vertical"
                        android:layout_marginRight="2dp"
                        android:layout_width="24dp"
                        android:layout_height="24dp" />

                    <TextView
                        android:id="@+id/tvToolbarTitle"
                        style="@style/TextAppearance.AppCompat.Widget.ActionBar.Title"
                        android:theme="?actionBarThemeStyle"
                        android:layout_gravity="center_vertical"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content" />

                </LinearLayout>

                <TextView
                    android:id="@+id/tvToolbarSubTitle"
                    style="@style/TextAppearance.AppCompat.Widget.ActionBar.Subtitle"
                    android:theme="?actionBarThemeStyle"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content" />

            </LinearLayout>



        </android.support.v7.widget.Toolbar>

        <!-- BUG: http://stackoverflow.com/questions/30541409/coordinatorlayoutappbarlayout-does-not-draw-toolbar-properly -->
        <View
            android:layout_width="fill_parent"
            android:layout_height="1dp"/>

    </android.support.design.widget.AppBarLayout>

    <FrameLayout
        android:id="@+id/frame_container"
        android:fitsSystemWindows="true"
        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="bottom|right"
        android:layout_margin="32dp"
        android:src="@drawable/ic_local_offer_white_24dp"
        app:backgroundTint="?attr/colorPrimary"
        app:borderWidth="0dp"
        app:fabSize="normal"
        app:rippleColor="?attr/colorPrimaryDark"
        app:layout_anchorGravity="bottom|right|end"
        app:layout_behavior="com.test.classes.ScrollAwareFABBehavior"/>

</android.support.design.widget.CoordinatorLayout>

And here is my fragment, that will be placed in the main activity:

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:fitsSystemWindows="true"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/srlImages"
        android:fitsSystemWindows="true"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.v7.widget.RecyclerView
            android:id="@+id/rvImages"
            android:fitsSystemWindows="true"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

    </android.support.v4.widget.SwipeRefreshLayout>

    <TextView
        android:id="@+id/tvEmpty"
        android:gravity="center"
        android:layout_centerInParent="true"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</RelativeLayout>

EDIT - Screenshots

I use a light/dark base theme and theme everything by hand (because the user can select any color as primary/accent color), so don't mind that the toolbar is white (it's the default's theme background color and primary color). I added a black border as well so that you see where the activity ends...

In the end, I'll of course make the toolbar and navbar semi transparent for a better visual effect...

tl;dr Set android:fitsSystemWindows="false" at least to the root CoordinatorLayout and to the inner fragment container, @frame_container .

This might not be the final solution (ie there might be other fitsSystemWindows to change) so tell me if you have any problems.

why

When it comes to status bar, I think of fitsSystemWindows like so:

In fact, in my opinion, the white you see is not the status bar color, but rather your CoordinatorLayout background. That is due to fitsSystemWindows="true" on the coordinator: it draws the background to the whole window, but adds top padding to the content so inner views are not covered by status bar.

This is not what you want. Your inner content must be covered by the status bar, and so you have to set fitsSystemWindows="false" to the coordinator (so it won't apply top padding) and probably to the content itself.

Once you get how it works, it is easy to debug and achieve the effect you are looking for. Actually, it is not. Years pass, but I still spend hours trying to figure out the right fitsSystemWindows combination, because most Views (in the support libraries at least) override the default behavior that I stated above, in ways that are mostly not intuitive. See this post for a small guide on how to use it.

Edit your styles.xml (v21) , add the following style

 <style name="AppTheme.Home" parent="AppTheme.Base">
    <!-- Customize your theme here. -->
    <item name="android:windowTranslucentStatus">true</item>
    <item name="android:windowDrawsSystemBarBackgrounds">true</item>
    <item name="android:windowTranslucentNavigation">true</item>

</style>

You can change parent theme as per your liking, but now declare this theme in your AndroidManifest.xml file for a particular activity like this :

 <activity
        android:theme="@style/AppTheme.Home"
        android:name=".HomeActivity"
        android:launchMode="singleTop"
        android:screenOrientation="portrait" />

This will let your content visible under the transparent actionbar.

Now use the following to align your toolbar below the StatusBar properly, call this in your oncreate:

 toolbar.setPadding(0, getStatusBarHeight(), 0, 0);

Get statusbar height using following :

public int getStatusBarHeight() {
    int result = 0;
    int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
    if (resourceId > 0) {
        result = getResources().getDimensionPixelSize(resourceId);
    }
    return result;
}

Remove the following from your coordinator layout tags :

    android:fitsSystemWindows="true"

Now in order to collapse your toolbar or hide it you may refer to following tutorial :

http://antonioleiva.com/collapsing-toolbar-layout/

Make sure you are using following version of design support library, as it is bug free :

    compile 'com.android.support:design:23.1.0'

After reading your descriptions about your question, I thought styles of Google Photos matches your requirement.

OK, there are just some tips for your question. After my test, it works.

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