使用include布局进行布局优化

<include
android:layout_width="fill_parent"
android:layout_height="wrap_content"
layout="@layout/include_title" />

include子页面

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@color/white">
<RelativeLayout
android:id="@+id/top_bar"
android:layout_width="fill_parent"
android:layout_height="45dp"
android:background="@color/theme_red"
>
<RelativeLayout
android:id="@+id/title_left"
android:layout_width="45dp"
android:layout_height="fill_parent"
android:background="@drawable/white_to_blackoverlay_btn"
android:clickable="true"
android:visibility="gone" >
<TextView
android:id="@+id/title_left_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="返回"
android:textColor="@color/white"
android:textSize="15sp" />
</RelativeLayout>
<RelativeLayout
android:id="@+id/title_left_btn"
android:layout_width="45dp"
android:layout_height="fill_parent"
android:background="@drawable/white_to_blackoverlay_btn"
android:clickable="true"
android:visibility="gone" >

<ImageView
android:id="@+id/left_icon"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_centerInParent="true" />
</RelativeLayout>

<RelativeLayout
android:id="@+id/title_right"
android:layout_width="45dp"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:background="@drawable/white_to_blackoverlay_btn"
android:clickable="true"
android:visibility="gone" >
<ImageView
android:id="@+id/right_icon"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_centerInParent="true" />
</RelativeLayout>

<RelativeLayout
android:id="@+id/title_text_right"
android:layout_width="50dp"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:background="@drawable/white_to_blackoverlay_btn"
android:clickable="true"
android:visibility="gone" >
<TextView
android:id="@+id/title_right_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textColor="@color/white"
android:textSize="15sp" />
</RelativeLayout>
<TextView
android:id="@+id/title_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="@string/app_title"
android:textColor="@color/white"
android:textSize="18sp" />
</RelativeLayout>

</RelativeLayout>