更改背景是否也会更改 LinearLayout 的填充? [英] Does changing the background also change the padding of a LinearLayout?

问题描述

我有以下 LinearLayout.我不明白的是，如果我将背景设置为另一个图像，填充信息将被重置.有没有办法防止这种情况发生?

I have the following LinearLayout. What I don't understand is if I set the background to another image, the padding information are reset. Is there a way to prevent this?

<LinearLayout android:id="@+id/aPanel"
    android:orientation="horizontal" android:layout_width="fill_parent"
    android:layout_height="wrap_content" android:background="@drawable/bkground"
    android:paddingLeft="15dp" android:paddingRight="15dp"> 

     <!-- some children here -->
     </LinearLayout>

当我更改 LinearLayout aPanel 的背景可绘制对象时，我看到孩子的位置发生了变化.

I see the position of the children get shifted when I change the background drawable of the LinearLayout aPanel.

推荐答案

这是在 View 上更改背景 Drawable 时的默认行为.据 Android 开发人员之一 Romain Guy 表示，设置图像会重置填充的原因是因为 9-patch 图像可以对填充进行编码."在类似问题中查看他的完整回答.

This is the default behavior when changing the background Drawable on a View. According to Romain Guy, one of the Android developers, "The reason why setting an image resets the padding is because 9-patch images can encode padding." See his full answer in a similar question.

解决方法是在每次更改背景可绘制对象时重置代码中的填充.

The fix is to reset the padding in code each time you change the background drawable.

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