HEGII.ss.mes.pda/res/layout/activity_water_efficiency_label.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:orientation="vertical"
    android:id="@+id/parentRel"
    android:background="@color/qingcolor" >
     <include 
        android:id="@+id/check_title"
        layout="@layout/fragment_title" />
     
     
       
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:orientation="vertical"
        >
       
   <ListView
        android:id="@+id/message_lst"
        android:layout_width="fill_parent"
         android:cacheColorHint="#00000000"
        android:layout_height="wrap_content"
        android:divider="@null"/>
   
    </LinearLayout>
  <LinearLayout
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:orientation="vertical"
      >
       <Button 
     android:id="@+id/clearBtn"
     android:layout_width="fill_parent"
     android:layout_height="45dp"
      android:textSize="@dimen/textsize_24"
   android:textColor="@color/white"
   android:background="@drawable/login_btn_selector"
     android:text="清除"
     />
       </LinearLayout>
</LinearLayout>