Treta.xml

<FrameLayout
    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">

    <ImageView
        android:id="@+id/backgroundImageView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/bg_timeline"
        android:scaleType="centerCrop"/>

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