Android-Dialog风格Activity开发

<?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:gravity="center_horizontal"
    android:orientation="vertical" >

    <TextView        
        android:id="@+id/live_wallpaper_dialog_content"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="5dp"
        android:layout_marginTop="5dp"
        android:gravity="center_vertical|center_horizontal"
        android:text="This is Content"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <View        
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="?android:attr/dividerHorizontal" />

    <LinearLayout        
        style="?android:attr/buttonBarStyle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:measureWithLargestChild="true" >

        <Button            
            android:id="@+id/live_wallpaper_dialog_cancel"
            style="?android:attr/buttonBarButtonStyle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="cancel" />

        <Button            
            android:id="@+id/live_wallpaper_dialog_download"
            style="?android:attr/buttonBarButtonStyle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="download" />
    </LinearLayout>
</LinearLayout>