thmodelAndroid/uikit/res/layout/nim_contacts_select.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@color/white">

    <RelativeLayout
        android:id="@+id/rlRoot"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">

        <android.support.design.widget.AppBarLayout
            android:id="@+id/app_bar_layout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:theme="@style/AppTheme.AppBarOverlay"
            app:elevation="0dp">
            <View
                android:id="@+id/statusBar"
                android:layout_width="match_parent"
                android:layout_height="20dp"/>
            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="?attr/colorPrimary"
                app:titleTextAppearance="@style/Toolbar.TitleText"></android.support.v7.widget.Toolbar>
        </android.support.design.widget.AppBarLayout>

        <RelativeLayout
            android:id="@+id/contactsLayout"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_above="@+id/rlCtrl"
            android:layout_below="@id/app_bar_layout"
            android:background="@color/transparent">

            <ListView
                android:id="@+id/contact_list_view"
                style="@style/list_view"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:layout_toLeftOf="@+id/liv_index"
                android:cacheColorHint="@color/white"
                android:divider="@color/transparent"
                android:listSelector="@color/transparent"
                android:nextFocusLeft="@+id/contact_select_back"
                android:nextFocusRight="@+id/btnAlSelected"
                android:nextFocusUp="@+id/contact_select_back"
                android:scrollbars="none" />

            <ImageView
                android:id="@+id/img_hit_letter"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerHorizontal="true"
                android:layout_centerVertical="true"
                android:background="@drawable/nim_contact_hit_letter_bg"
                android:contentDescription="@string/empty"
                android:padding="40dip"
                android:visibility="invisible" />

            <TextView
                android:id="@+id/tv_hit_letter"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerHorizontal="true"
                android:layout_centerVertical="true"
                android:textColor="#ffffff"
                android:textSize="40sp"
                android:visibility="invisible" />

            <com.netease.nim.uikit.common.ui.liv.LetterIndexView
                android:id="@+id/liv_index"
                android:layout_width="15dip"
                android:layout_height="fill_parent"
                android:layout_alignParentRight="true"
                android:background="#00000000" />
        </RelativeLayout>

        <RelativeLayout
            android:id="@+id/rlCtrl"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:background="#3c3c3c"
            android:minHeight="55dp"
            android:visibility="visible">

            <Button
                android:id="@+id/btnSelect"
                android:layout_width="wrap_content"
                android:layout_height="34dp"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true"
                android:layout_marginLeft="6dip"
                android:layout_marginRight="6dip"
                android:background="@drawable/nim_message_button_bottom_send_selector"
                android:enabled="false"
                android:paddingLeft="8dip"
                android:paddingRight="8dip"
                android:text="确定(0)"
                android:textColor="@color/white"
                android:textSize="14sp"
                android:visibility="visible" />

            <HorizontalScrollView
                android:id="@+id/contact_select_area"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_toLeftOf="@id/btnSelect"
                android:layout_weight="1"
                android:fillViewport="true"
                android:scrollbars="none">

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="horizontal"
                    android:paddingLeft="6dip"
                    android:paddingRight="6dip">

                    <GridView
                        android:id="@+id/contact_select_area_grid"
                        style="@style/grid_view"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center_vertical"
                        android:gravity="center"
                        android:horizontalSpacing="0dip"
                        android:listSelector="@android:color/transparent"
                        android:paddingTop="6dp"
                        android:verticalSpacing="0dip" />
                </LinearLayout>
            </HorizontalScrollView>
        </RelativeLayout>
    </RelativeLayout>
</FrameLayout>