BaiDuAutoUpdateDemo/BDAutoUpdateDemo/res/layout/activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="10dip"
    android:orientation="vertical"
    android:gravity="center"
    tools:context="${packageName}.${activityClass}" >

    <LinearLayout 
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">
        
        <Button 
	        android:id="@+id/btn_ui"
	        android:layout_width="match_parent"
	        android:layout_height="40dip"
	        android:text="UI更新"
	        />
	
	    <Button 
	        android:id="@+id/btn_silence"
	        android:layout_width="match_parent"
	        android:layout_height="40dip"
	        android:text="静默更新"
	        />
	    
	    <Button 
	        android:id="@+id/btn_as"
	        android:layout_width="match_parent"
	        android:layout_height="40dip"
	        android:text="百度助手更新"
	        />
	
	    <Button 
	        android:id="@+id/btn_noui"
	        android:layout_width="match_parent"
	        android:layout_height="40dip"
	        android:text="无UI更新"
	        />
    </LinearLayout>
    
    <ScrollView 
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        
        <TextView 
	        android:id="@+id/txt_log"
	        android:layout_width="match_parent"
	        android:layout_height="wrap_content"
	        />
    </ScrollView>
    
</LinearLayout>