如何將包含的佈局推到屏幕底部？

Question

我有一個名爲footer.xml的佈局，稍後將包含在多個佈局中。 Footer.xml如下：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/bottomMenu" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:layout_gravity="bottom" 
    android:orientation="horizontal" 
    android:layout_alignParentBottom="true" 
    android:background="@drawable/bg_gradation" 
    android:weightSum="1" > 
*** STUFF GOES HERE *** 
</LinearLayout> 

然後Footer.xml將被包括在其他佈局如下..

<?xml version="1.0" encoding="utf-8"?> 
<!-- A DrawerLayout is intended to be used as the top-level content view using match_parent for both width and height to consume the full space available. --> 
<android.support.v4.widget.DrawerLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/drawer_layout" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@drawable/backrepeat"> 

    <!-- As the main content view, the view below consumes the entire 
     space available using match_parent in both dimensions. --> 
    <LinearLayout 
     android:id="@+id/content_frame" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:orientation="vertical" 
     android:layout_marginBottom="0dp" 
     android:weightSum="1"> 
     <ListView 
      android:id="@+id/chatListView" 
      android:layout_width="fill_parent" 
      android:layout_height="0dp" 
      android:divider="#00000000" 
      android:scrollbars="none" 
      android:dividerHeight="1dp" 
      android:layout_weight=".80"/> 
     <LinearLayout 
      android:id="@+id/chatBar" 
      android:layout_width="match_parent" 
      android:layout_height="0dp" 
      android:layout_weight=".13" 
      android:orientation="horizontal" 
      android:background="#242424" 
      android:weightSum="1"> 
     </LinearLayout> 
    </LinearLayout> 
    <include layout="@layout/footer"/> 

    <!-- android:layout_gravity="start" tells DrawerLayout to treat 
     this as a sliding drawer on the left side for left-to-right 
     languages and on the right side for right-to-left languages. 
     The drawer is given a fixed width in dp and extends the full height of 
     the container. A solid background is used for contrast 
     with the content view. --> 
    <ListView 
     android:id="@+id/left_drawer" 
     android:layout_width="240dp" 
     android:layout_height="match_parent" 
     android:layout_gravity="start" 
     android:choiceMode="singleChoice" 
     android:divider="@android:color/transparent" 
     android:dividerHeight="0dp" 
     android:background="#111"/> 
</android.support.v4.widget.DrawerLayout> 

因爲我想foo​​ter.xml是在屏幕底部，我用android:layout_gravity="bottom"這使它正確，如果從footer.xml的角度來看

然而，當我試圖把它從其他的佈局，它拋出的錯誤，說：

java.lang.UnsupportedOperationException (Error Log does not show helpful information at all). 

編輯1 這是最好的錯誤消息，我能得到..（我不能複製粘貼記錄文本）

EDIT 2 如果我有我的佈局這樣：

<LinearLayout 
    android:layout_weight="1" 
    android:orientation="horizontal" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"> 
    <include layout="@layout/footer" 
     android:id="@+id/footer"/> 
</LinearLayout> 

它呈現了我希望它在Eclipse編輯器中的方式。

java.lang.IllegalStateException: Child android.widget.LinearLayout{a72d4938 V.E..... ......ID 0,0-0,0 #7f0a005c app:id/bottomMenu} at index 1 does not have a valid layout_gravity - must be Gravity.LEFT, Gravity.RIGHT or Gravity.NO_GRAVITY 

，如果我editted我footer.xml這樣：：

<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/bottomMenu" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:orientation="horizontal" <---- not android:layout_gravity="bottom" 
    android:background="@drawable/bg_gradation" 
    android:weightSum="1" > 

我的頁腳將填滿整個屏幕的但是，當我嘗試在Android上我碰到下面的錯誤運行從上到下。

任何人都可以幫助我嗎？謝謝..

Answer 1

把你的LinearLayout和頁腳相對佈局內

<include 
     android:id="@+id/footer" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_alignParentBottom="true" 
     layout="@layout/activity_main" /> 

XML：

<?xml version="1.0" encoding="utf-8"?> 
<!-- A DrawerLayout is intended to be used as the top-level content view using match_parent for both width and height to consume the full space available. --> 
<android.support.v4.widget.DrawerLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/drawer_layout" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@drawable/backrepeat"> 

    <!-- As the main content view, the view below consumes the entire 
     space available using match_parent in both dimensions. --> 
    <RelativeLayout android:layout_width="match_parent" 
     android:layout_height="match_parent"> 
    <LinearLayout 
     android:id="@+id/content_frame" 
     android:layout_above="@+id/footer" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:orientation="vertical" 
     android:layout_marginBottom="0dp" 
     android:weightSum="1"> 
     <ListView 
      android:id="@+id/chatListView" 
      android:layout_width="fill_parent" 
      android:layout_height="0dp" 
      android:divider="#00000000" 
      android:scrollbars="none" 
      android:dividerHeight="1dp" 
      android:layout_weight=".80"/> 
     <LinearLayout 
      android:id="@+id/chatBar" 
      android:layout_width="match_parent" 
      android:layout_height="0dp" 
      android:layout_weight=".13" 
      android:orientation="horizontal" 
      android:background="#242424" 
      android:weightSum="1"> 
     </LinearLayout> 
    </LinearLayout> 
    <include layout="@layout/footer"  android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_alignParentBottom="true"/> 
    </RelativeLayout> 
    <!-- android:layout_gravity="start" tells DrawerLayout to treat 
     this as a sliding drawer on the left side for left-to-right 
     languages and on the right side for right-to-left languages. 
     The drawer is given a fixed width in dp and extends the full height of 
     the container. A solid background is used for contrast 
     with the content view. --> 
    <ListView 
     android:id="@+id/left_drawer" 
     android:layout_width="240dp" 
     android:layout_height="match_parent" 
     android:layout_gravity="start" 
     android:choiceMode="singleChoice" 
     android:divider="@android:color/transparent" 
     android:dividerHeight="0dp" 
     android:background="#111"/> 
</android.support.v4.widget.DrawerLayout>