android 布局 ListView中的列表 RelativeLayout

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<!-- 显示头像 -->
<ImageView
android:id="@+id/iv_img"
android:layout_width="55dp"
android:layout_height="60dp"
android:background="@drawable/ic_launcher"
/>

<!-- 文本区域 -->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="55dp"
android:layout_toRightOf="@id/iv_img"
android:layout_marginLeft="10dp"
>
<TextView
android:id="@+id/tv_tel"
android:layout_width="wrap_content"
android:layout_height="25dp"
android:gravity="center_vertical"
android:textColor="#000000"
android:background="#ff0000"
android:text="aaaaaaaaaaaaaaaaaaa"
/>
<TextView
android:id="@+id/tv_type"
android:layout_width="wrap_content"
android:layout_height="25dp"
android:layout_alignParentRight="true"
android:layout_above="@+id/rl1"
android:gravity="center_vertical"
android:textColor="#006633"
android:textStyle="bold"
android:textSize="22dp"
android:maxLength="10"
android:layout_marginRight="20dp"
android:background="#ff00ff"
android:text="aaaaaaaaaaaaaaaaaaa"
/>

<RelativeLayout
android:id="@+id/rl1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/tv_tel"
>
<TextView
android:id="@+id/tv_msg"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:lines="1"
android:maxLength="10"
android:textColor="#000"
android:background="#00f000"
android:text="aaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
/>
<TextView
android:id="@+id/tv_time"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:layout_marginRight="10dp"
android:gravity="center_vertical"
android:textColor="#000"
android:background="#0ffff0"
android:maxLength="10"
android:text="aaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
/>
</RelativeLayout>
</RelativeLayout>
<!-- 分隔条 -->
<TextView
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_alignBottom="@id/iv_img"
android:background="#bbb"
/>
</RelativeLayout>