tabhost放到底部显示

主要原理:设置 TabWidget 控件的 android:layout_alignParentBottom="true" 实现。
<?xml version="1.0" encoding="utf-8"?>
  <TabHost android:id="@+id/tabhost" xmlns:android="http://schemas.android.com/apk/res/android"
       android:orientation="vertical" android:layout_width="fill_parent"
       android:layout_height="fill_parent">
       <RelativeLayout android:orientation="vertical"
           android:layout_width="fill_parent" android:layout_height="fill_parent">
           <TabWidget android:id="@android:id/tabs"
               android:layout_width="fill_parent" android:layout_height="wrap_content"
               android:layout_alignParentBottom="true" />
           <FrameLayout android:id="@android:id/tabcontent"
               android:layout_width="fill_parent" android:layout_height="fill_parent">
               <LinearLayout android:id="@+id/tab1"
                   android:layout_width="fill_parent" android:layout_height="fill_parent"
                   androidrientation="vertical">
                   <TextView android:id="@+id/view1" android:layout_width="wrap_content"
                       android:layout_height="wrap_content" android:text="@string/textView_1" />
               </LinearLayout>
               <LinearLayout android:id="@+id/tab2"
                   android:layout_width="fill_parent" android:layout_height="fill_parent"
                   androidrientation="vertical">
                   <TextView android:id="@+id/view2" android:layout_width="wrap_content"
                       android:layout_height="wrap_content" android:text="@string/textView_2" />
               </LinearLayout>
               <LinearLayout android:id="@+id/tab3"
                   android:layout_width="fill_parent" android:layout_height="fill_parent"
                   androidrientation="vertical">
                   <TextView android:id="@+id/view3" android:layout_width="wrap_content"
                       android:layout_height="wrap_content" android:text="@string/textView_3" />
               </LinearLayout>
               <LinearLayout android:id="@+id/tab4"
                   android:layout_width="fill_parent" android:layout_height="fill_parent"
                   androidrientation="vertical">
                   <TextView android:id="@+id/view4" android:layout_width="wrap_content"
                       android:layout_height="wrap_content" android:text="@string/textView_4" />
               </LinearLayout>
           </FrameLayout>
       </RelativeLayout>
  </TabHost>

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