LastPipeBender/app/src/main/res/layout/channel_header.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    android:id="@+id/channel_header_layout"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/channel_banner_image"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fitsSystemWindows="true"
        android:scaleType="center"
        android:src="@drawable/channel_banner"
        android:background="@android:color/black"
        android:adjustViewBounds="true"/>

    <RelativeLayout
        android:id="@+id/channel_avatar_layout"
        android:layout_alignTop="@id/channel_banner_image"
        android:layout_width="@dimen/channel_avatar_halo_size"
        android:layout_height="@dimen/channel_avatar_halo_size"
        android:layout_marginLeft="20dp"
        android:layout_marginStart="20dp"
        android:layout_marginTop="30dp">

        <ImageView
            android:id="@+id/channel_avatar_halo"
            android:layout_width="@dimen/channel_avatar_halo_size"
            android:layout_height="@dimen/channel_avatar_halo_size"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:src="@drawable/white_circle" />

        <de.hdodenhof.circleimageview.CircleImageView
            android:id="@+id/channel_avatar_view"
            android:layout_width="@dimen/channel_avatar_size"
            android:layout_height="@dimen/channel_avatar_size"
            android:src="@drawable/buddy"
            android:layout_centerInParent="true"/>
    </RelativeLayout>

    <TextView
        android:id="@+id/channel_title_view"
        android:layout_below="@id/channel_banner_image"
        android:layout_toEndOf="@id/channel_avatar_layout"
        android:layout_toRightOf="@id/channel_avatar_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="4dp"
        android:layout_marginStart="4dp"
        android:textSize="@dimen/video_item_detail_title_text_size"
        android:textAppearance="?android:attr/textAppearanceLarge"/>

    <LinearLayout
        android:id="@+id/channel_subscriber_layout"
        android:visibility="gone"
        android:layout_below="@id/channel_avatar_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <Button
            android:id="@+id/channel_subscribe_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/subscribe"
            android:layout_marginLeft="4dp"
            android:layout_marginStart="4dp"/>

        <TextView
            android:id="@+id/channel_subscriber_view"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="center"/>
    </LinearLayout>

</RelativeLayout>