将一个块在滚动型的中心 [英] Place a block at the center of a ScrollView

问题描述

我有一个滚动型包含一个孩子（元素包裹一个LinearLayout中）。有时这个孩子的身高一半的视口的高度，有时是更大的。

I have a ScrollView that contains a single child (elements wrapped by a LinearLayout). Sometime this child's height is half of the viewport's height, sometime it is bigger.

下面的布局：

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="10dp"
    android:paddingRight="10dp"
    android:paddingBottom="10dp"
    android:paddingTop="10dp"
    android:background="@color/some_background">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:background="@drawable/fond_consult"
        android:orientation="vertical"
        android:weightSum="2">

        ... Some TextViews and ImageViews...

    </LinearLayout>
</ScrollView>

当所述屏幕大小和密度低，孩子正确地显示在滚动型，但呈现像HDPI和XHDPI一个更大的屏幕上该活动时，该内容被放置在滚动型的顶部。

When the screen size and density is low, the child is correctly displayed in the ScrollView, but when rendering this activity on a bigger screen like HDPI and XHDPI, the content is placed at the top of the ScrollView.

有什么办法来设置重力为滚动型的唯一的孩子，还是我都删除了滚动视图，如果该设备的屏幕大于孩子的measered高度？

Is there any way to set gravity for the sole child of the ScrollView, or do I have to delete the scrollView if the device screen is bigger than the measered height of the child ?

推荐答案

你可以做的是尝试添加安卓layout_gravity =中心到滚动型及其 layout_width 和 layout_height 为 WRAP_CONTENT 。作为滚动型管理本身到其子布局的高度和宽度。

What you can do is try adding android:layout_gravity="center" to ScrollView with its layout_width and layout_height as wrap_content. As ScrollView manages itself to the height and width of its child layouts.

这篇关于将一个块在滚动型的中心的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！