fragment_order_operate.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <android.support.v4.view.ViewPager
            android:id="@+id/vp_operate"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@color/cl_white" />
        <ImageView
            android:visibility="gone"
            android:id="@+id/iv_pre"
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:src="@drawable/icon_pre_operate"
            android:layout_centerVertical="true"
            />
        <ImageView
            android:visibility="gone"
            android:id="@+id/iv_next"
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:src="@drawable/icon_next_operate"
            android:layout_centerVertical="true"
            android:layout_alignParentRight="true"
            />
    </RelativeLayout>

</layout>