Android ScrollView 内的视图不会全部发生

View inside ScrollView doesn't take all place

提问by g123k

I have a RelativeLayout inside a ScrollView. My RelativeLayout has android:layout_height="match_parent"but the view doesn't take the entire size, it's like a wrap_content.

我在 ScrollView 中有一个 RelativeLayout。我的RelativeLayout 有，android:layout_height="match_parent"但视图没有占据整个尺寸，它就像一个wrap_content。

Is there a way to have the real fill_parent/match_parent behavior ?

有没有办法拥有真正的 fill_parent/match_parent 行为？

My layout :

我的布局：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">

    <ImageView
    android:id="@+id/top"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:scaleType="fitXY"
    android:src="@drawable/top" />

    <ImageView
    android:id="@+id/header"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_below="@+id/top"
    android:scaleType="fitXY"
    android:src="@drawable/headerbig" />

    <ImageView
    android:id="@+id/logo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@+id/header"
    android:layout_centerHorizontal="true"
    android:layout_marginBottom="3dp"
    android:src="@drawable/logo" />

    <ScrollView
    android:layout_width="fill_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/bottom"
    android:layout_below="@+id/logo"
    android:background="@drawable/background" >

        <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">

             <ImageView
            android:id="@+id/dashboard01"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_above="@+id/dashboard02"
            android:layout_centerHorizontal="true"
            android:layout_marginBottom="30dp"
            android:src="@drawable/dashboard01"
            android:visibility="visible" />

            <ImageView
            android:id="@+id/dashboard02"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:layout_alignParentRight="true"
            android:layout_marginRight="10dp"
            android:src="@drawable/dashboard02" />

             <ImageView
            android:id="@+id/dashboard03"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/dashboard02"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="40dp"
            android:src="@drawable/dashboard03"
            android:visibility="visible" />
         </RelativeLayout>
    </ScrollView>

    <ImageView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_below="@+id/logo"
    android:layout_centerHorizontal="true"
    android:scaleType="fitXY"
    android:src="@drawable/bar" />

    <ImageView
    android:id="@+id/bottom"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:scaleType="fitXY"
    android:src="@drawable/bottom" />

</RelativeLayout>

回答by Sam Dozor

Try adding android:fillViewport="true"to your ScrollView

尝试添加android:fillViewport="true"到您的 ScrollView

remember that android:layout_height=”fill_parent”means “set the height to the height of the parent.” This is obviously not what you want when using a ScrollView. After all, the ScrollViewwould become useless if its content was always as tall as itself. To work around this, you need to use the ScrollView attribute called android:fillViewport. When set to true, this attribute causes the scroll view's child to expand to the height of the ScrollViewif needed. When the child is taller than the ScrollView, the attribute has no effect.

请记住，这android:layout_height=”fill_parent”意味着“将高度设置为父级的高度”。这显然不是您在使用ScrollView. 毕竟，ScrollView如果它的内容总是和它自己一样高，它就会变得毫无用处。要解决此问题，您需要使用名为 的 ScrollView 属性android:fillViewport。当设置为 true 时，ScrollView如果需要，此属性会导致滚动视图的子级扩展到 的高度。当孩子高于 时ScrollView，该属性无效。

http://www.curious-creature.org/2010/08/15/scrollviews-handy-trick/

http://www.curious-creature.org/2010/08/15/scrollviews-handy-trick/

回答by virendra singh deora

Just add android:fillViewport="true" in yout xml layout in Scrollview

只需在 Scrollview 的 xml 布局中添加 android:fillViewport="true"

<ScrollView android:layout_height="match_parent"
    android:layout_width="match_parent"
    android:background="@color/green"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:fitsSystemWindows="true"
    android:fillViewport="true"
    >

<!--define views here-->


</ScrollView>