android：如何向 FrameLayout 内的 LinearLayout 添加填充
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android: how do I add padding to a LinearLayout inside a FrameLayout
提问by user3093402
I have a FrameLayout with many children. One of the children is a LinearLayout. I want the width of the LinearLayout to match_parentbut about 90% so; which means I want to add some sort of paddingLeft/Rightor margingLeft/Right. But when I add the padding or margin, it is not applied in the Graphical Layout. How do I do this correctly?
我有一个有很多孩子的 FrameLayout。其中一个孩子是 LinearLayout。我希望 LinearLayout 的宽度match_parent大约为 90%；这意味着我想添加某种paddingLeft/Rightor margingLeft/Right。但是当我添加填充或边距时，它不会应用于图形布局。我该如何正确地做到这一点？
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/blue" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:background="@color/red"
android:marginLeft="20dp"
android:marginRight="20dp"
android:orientation="vertical" >
....
回答by Rat-a-tat-a-tat Ratatouille
you have
你有
android:marginLeft="20dp"
android:marginRight="20dp"
instead change it to:
而是将其更改为：
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
If it still doesnot work, put this layout inside another layout and set the margins to the other layout.
如果它仍然不起作用，请将这个布局放在另一个布局中并将边距设置为另一个布局。
回答by Namrata
You worte following code, which is not correct
您编写了以下代码，这是不正确的
android:marginLeft="20dp"
android:marginRight="20dp"
Try This :-
尝试这个 ：-
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/black"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
**android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"**
android:background="@android:color/white"
android:orientation="vertical" >
</LinearLayout>
</FrameLayout>
Similarly you can give margin at Top and Bottom
同样，您可以在顶部和底部提供边距
