Strange custom Toolbar on pre-lollipop devices

Question

I've issues with the appcompat toolbar on < 5.0 devices. I was expecting this (Working result on Xperia and Nexus devices with lollipop):

Unfortunately I do get this on < 5.0 devices; black text and a weird looking statusbar hovering over the toolbar:

This is my toolbar design:

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/ColorPrimary"
    android:theme="@style/ThemeOverlay.AppCompat.Dark"
    android:elevation="4dp">

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

And MainActivity design:

<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/DrawerLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:clickable="true">

        <include
            android:id="@+id/tool_bar"
            layout="@layout/tool_bar">
        </include>

        <android.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/pager"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <android.support.v4.view.PagerTitleStrip android:id="@+id/pager_title_strip"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_gravity="top"
                android:background="#33b5e5"
                android:textColor="#fff"
                android:paddingTop="4dp"
                android:paddingBottom="4dp" />

        </android.support.v4.view.ViewPager>
    </LinearLayout>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/RecyclerView"
        android:layout_width="320dp"
        android:layout_height="match_parent"
        android:layout_gravity="left"

        android:background="#ffffff"
        android:scrollbars="vertical">

    </android.support.v7.widget.RecyclerView>
</android.support.v4.widget.DrawerLayout>

My styles-v21.xml:

<resources>
    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <item name="colorPrimary">@color/ColorPrimary</item>
        <item name="colorPrimaryDark">@color/ColorPrimaryDark</item>
        <item name="android:windowDrawsSystemBarBackgrounds">true</item>
        <item name="android:statusBarColor">@android:color/transparent</item>
    </style>
</resources>

Defining code inside MainActivity's onCreate:

toolbar = (Toolbar) findViewById(R.id.tool_bar);
setSupportActionBar(toolbar);

mRecyclerView = (RecyclerView) findViewById(R.id.RecyclerView);
mRecyclerView.setHasFixedSize(true);
Drawer = (DrawerLayout) findViewById(R.id.DrawerLayout);
Drawer.setStatusBarBackgroundColor(getResources().getColor(R.color.ColorPrimaryDark));

Answer 1

Okay I finally managed to get rid of this weird issue. I've changed the style.xml for v-19 to this:

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar" >
    <item name="android:windowTranslucentStatus">true</item>
</style>

Which just makes the statusbar transparent on kitkat devices. And changed nothing in the style-v21.xml and the original styles.xml file.

Then changed the toolbar to add app:theme and app:popupTheme which is set to display white text theme. And a android:paddingTop to change the padding which is needed to be set on kitkat devices.

<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:background="@color/ColorPrimary"
    android:elevation="4dp"
    app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
    android:paddingTop="@dimen/tool_bar_top_padding">

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

In the default dimens.xml:

<dimen name="tool_bar_top_padding">0dp</dimen>

dimens-v19.xml:

<dimen name="tool_bar_top_padding">20dp</dimen>

dimens-v21.xml:

<dimen name="tool_bar_top_padding">0dp</dimen>

And last but not least removed the android:fitsSystemWindows="true" from the DrawerLayout in the main_activity.xml design