如何在android relativelayout周围放置边框? [英] how to put a border around an android relativelayout?

问题描述

我已经看到主题有关在Android周围放置边框textview，我用了它.但是现在，我想在位于相对布局中的小部件周围放置边框.我该怎么办?

I've seen this subject about puting a border around an android textview, and I used it. But now, I would like to put a border around widgets which are situated into a relative layout. How can I do it?

推荐答案

1. 在您的res/drawable文件夹中，创建一个新文件background_border.xml

1. in your res/drawable folder, create a new file background_border.xml

在此文件中，您将像这样定义小部件的背景:

In this file, you will define the background for widget like this:

<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="rectangle" >
    <!-- This is the stroke you want to define -->
    <stroke android:width="1dp" 
            android:color="@color/color_stroke"/>

    <!-- Optional, round your corners -->
    <corners android:bottomLeftRadius="0dp"
             android:topLeftRadius="5dp"
             android:bottomRightRadius="5dp"
             android:topRightRadius="0dp" />

    <!-- Optional, fill the rest of your background with a color or gradient, use transparent if you only want the border to be displayed-->
    <gradient android:startColor="@android:color/transparent"
              android:endColor="@android:color/transparent"
              android:angle="90"/>
</shape>

1. 将小部件的背景设置为刚创建的可绘制配置

例如如果您想将边框放在相对布局上

eg. if you want to put your border on a relativelayout:

<RelativeLayout            
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/background_border"
            android:padding="15dp">
    ...
</RelativeLayout>

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