Android 布局权重在 ScrollView 中不起作用
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Layout Weights do not work inside a ScrollView
提问by MIP TECH
I want to assign layout weights to several items within a LinearLayoutinside of a ScrollView. However, the ScrollViewignores the LinearLayoutweightSum.
我想一个内指定布局权重的几个项目LinearLayout的内部ScrollView。但是，ScrollView忽略了LinearLayoutweightSum.
My goal is to divide the layout with weights of 2, 1, 1 (for a total sum of 4), but this does not work properly inside of a ScrollView.
我的目标是用 2、1、1 的权重划分布局（总和为 4），但这在ScrollView.
How can I solve this layout problem?
我该如何解决这个布局问题？
main.xml
主文件
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:weightSum="4">
<LinearLayout android:id="@+id/logo"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_weight="2"
android:background="#FFFFFF" />
<LinearLayout android:id="@+id/logo1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_weight="1"
android:background="#000000" />
<LinearLayout android:id="@+id/logobutton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_weight="1"
android:background="#4B4B4B" />
</LinearLayout>
</ScrollView>
回答by Akhil
I have faced this problem before. Just use android:fillViewport="true"in your ScrollView and it will fill up the screen.
我以前遇到过这个问题。只需android:fillViewport="true"在您的 ScrollView 中使用，它就会填满屏幕。
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true" >
回答by David Scott
This won't work as you have done it. The child view of a ScrollViewshould be set to wrap_content. If you set it to fill_parent, it will fill the area of the ScrollViewand never scroll, because it won't be larger than the ScrollView.
这不会像你所做的那样工作。ScrollView的子视图应设置为wrap_content. 如果将其设置为fill_parent，它将填充ScrollView的区域并且从不滚动，因为它不会大于ScrollView。
The idea of layout_weightis to fill a specific area proportionately.
的想法layout_weight是按比例填充特定区域。
You should set all of the child LinearLayoutslayout_heightto either wrap_contentor a specific size (in dp) and the parent LinearLayoutlayout_heightto wrap_content
您应该所有子集LinearLayoutslayout_height要么wrap_content或特定尺寸（DP）和父的LinearLayoutlayout_height来wrap_content
As said you need to remove the additional
如上所述，您需要删除额外的
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:android="http://schemas.android.com/apk/res/android"
if it's not the root (first) element of the layout.
如果它不是布局的根（第一个）元素。
回答by Andy Sin
In my experience, fillviewport=trueworks bit strange.
根据我的经验，fillviewport=true工作有点奇怪。
I solved this problem by wrapping LinearLayoutwith another Layout like FrameLayout.
我通过LinearLayout用另一个 Layout 之类的 Layout包装解决了这个问题FrameLayout。
I hope this helps.
我希望这有帮助。
回答by Manju S B
Add below line in your ScrollView it will be work fine.
在您的 ScrollView 中添加以下行，它将正常工作。
Only single child must be there for ScrollView
ScrollView 必须只有一个孩子
android:fillViewport="true"
回答by Ali Keb
just put this in your scroll view:
把它放在你的滚动视图中：
android:fillViewport="true"
android:fillViewport="true"
