<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:orientation="vertical"> <ImageView android:id="@+id/page_item" android:layout_width="match_parent" android:layout_height="match_parent" android:src="@drawable/transparent_bg"/> </LinearLayout>