A gist for showing textview on the Image view, this util is for giving grey background to the image

actionbar_gradient_dark.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle" >
    <gradient
        android:angle="90"
        android:endColor="@android:color/transparent"
        android:startColor="@android:color/black" />
    <corners android:radius="0dp" />
</shape>

main_image.xml

<FrameLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <ImageView
                    android:id="@+id/image"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:fitsSystemWindows="true"
                    android:scaleType="centerCrop"
                    app:layout_collapseMode="parallax" />
                <View
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:background="@drawable/actionbar_gradient_dark" />
            </FrameLayout>