ScrollView不起作用-相对布局

Question

I am trying to wrap a realtive view in a scrollview as per the code below. However the problem is that the view doesn't scroll, even though part of the view is off the screen. I am testing this on the emulator.

<?xml version="1.0" encoding="UTF-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/scroller"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
 >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/background"
android:orientation="vertical"
> 
<TextView 
android:id="@+id/namedetail"
android:background="@drawable/backgroundstate"
android:layout_width="fill_parent"
android:gravity="center_vertical|center_horizontal" 
android:layout_height="50dip"
android:textColor="#FF000000"
android:textStyle="bold"
android:textSize="15sp"
android:typeface="sans" 
  />      
<ImageView android:id="@+id/picturedetail"
android:layout_width="175dip"
android:layout_height="175dip"
android:layout_below="@id/namedetail"
android:layout_marginLeft="75dip"
android:layout_marginTop="10dip"
/>
<ImageView android:id="@+id/infoboxdetail"
android:layout_width="225dip"
android:layout_height="100dip"
android:layout_marginLeft="50dip"
android:layout_marginTop="10dip"
android:layout_below="@id/picturedetail"
android:background="@drawable/backgroundstate"
/>
<TextView 
android:id="@+id/descriptiondetail"
android:background="@drawable/backgroundstate"
android:layout_width="fill_parent"
android:gravity="center_vertical|center_horizontal" 
android:layout_height="50dip"
android:textColor="#FF000000"
android:textStyle="bold"
android:textSize="15sp"
android:typeface="sans" 
android:layout_below="@id/infoboxdetail"
android:layout_marginTop ="10dip"
/>  
</RelativeLayout>
</ScrollView>

EDIT

OK solved - user stupidity - the bottom text box was off the screen on my monitor but not in the emulator. Making it longer makes it now scroll.

Answer 1

您的RelativeLayout是horizontal并且您使用ScrollView ，请尝试使用HorizontalScrollView 。

Answer 2

I believe this is because the RelativeLayout doesn't stretch based on content. The ScrollView will fill the screen and then the RelativeLayout will fill the ScrollView . The size of the RelativeLayout will not change as you put widgets into it.

I would try using another type of layout - perhaps a TableLayout og a combination of nested LinearLayout .

Is there any specific reason why you're using the RelativeLayout ?