uu-android/WeiChat/src/main/res/layout/activity_webview.xml

<?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:background="@color/lightgrey"
    android:orientation="vertical">

    <ProgressBar
        android:id="@+id/pb"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="fill_parent"
        android:layout_height="5dip"
        android:animationResolution="100"
        android:indeterminate="false"
        android:indeterminateDuration="500"
        android:indeterminateOnly="false"
        android:max="100"
        android:progressDrawable="@drawable/webview_progress_bar"
        android:visibility="gone"></ProgressBar>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <com.handmark.pulltorefresh.library.PullToRefreshWebView
            android:id="@+id/webView_listview"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@color/linen"
            android:layerType="software" />

        <TextView
            android:id="@+id/web_previous_tv"
            android:layout_width="100dp"
            android:layout_height="36dp"
            android:layout_alignParentBottom="true"
            android:layout_marginBottom="25dp"
            android:layout_marginLeft="30dp"
            android:background="@drawable/selector_flip_btn"
            android:gravity="center"
            android:text="@string/web_previous_tv"
            android:textColor="@color/white"
            android:textSize="16sp"
            android:visibility="gone"/>

        <TextView
            android:id="@+id/web_next_tv"
            android:layout_width="100dp"
            android:layout_height="36dp"
            android:layout_alignParentBottom="true"
            android:layout_alignParentRight="true"
            android:layout_marginBottom="25dp"
            android:layout_marginRight="30dp"
            android:background="@drawable/selector_flip_btn"
            android:gravity="center"
            android:text="@string/web_next_tv"
            android:textColor="@color/white"
            android:textSize="16sp"
            android:visibility="gone"/>
    </RelativeLayout>

</LinearLayout>