海拔不适用于 ImageView [英] Elevation not working for ImageView

问题描述

ImageView 的高程不起作用.我像这样在 XML 中声明 ImageView:

Elevation for ImageView is not working. I declared ImageView in XML like this:

<ImageView
        android:id="@+id/image"
        android:layout_width="100dp"
        android:layout_height="50dp"
        android:elevation="10dp"
        android:src="@drawable/youtube" />

我还应该做什么才能让 ImageView 正常工作?

What else should I do for elevation to work properly for ImageView?

推荐答案

高程阴影来源于View的背景drawable.如果您的 ImageView 没有背景，您将看不到阴影.

The elevation shadow is derived from the background drawable of a View. If your ImageView has no background, you'll see no shadow.

如果你想改变这种行为，你需要构建自己的ViewOutlineProvider 并调用 View.setOutlineProvider() 来设置它(这不是微不足道的).

If you want to change that behavior, you need to build your own ViewOutlineProvider and call View.setOutlineProvider() to set it (and this is not trivial).

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