View Drag Layout

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <!-- The views behind the draggable layout =================== -->
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#f5f5f5">

        <Button
            android:id="@+id/btnShowLayout"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentEnd="true"
            android:text="show draggable layout" />

        <pl.droidsonroids.gif.GifImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:src="@drawable/droid_dance" />
    </RelativeLayout>
    <!-- =================== The views behind the draggable layout -->


    <!-- the dragging and related views ========================== -->
    <ImageView
        android:id="@+id/imgDarkOverlay"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#e0000000" />

    <LinearLayout
        android:id="@+id/linDraggable"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#E91E63"
        android:clickable="true"
        android:gravity="center"
        android:orientation="vertical">

        <ImageView
            android:layout_width="match_parent"
            android:layout_height="200dp"
            android:layout_marginBottom="30dp"
            android:src="@drawable/android_apps"
            android:tint="#fff" />

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:text="This is a draggable Linear Layout"
            android:textColor="#fff"
            android:textSize="20sp" />

    </LinearLayout>

    <View
        android:id="@+id/viewTouchListener"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
    <!-- ========================== the dragging and related views -->

</FrameLayout>