Android中是否有用于ImageView内容的工具属性? [英] Is there a tools attribute for ImageView content in Android?

问题描述

我找不到用于在Android版式中设置示例图片的 tools 属性.我的假设是，目前没有这种东西，至少没有直接支持.

I could not find a tools attribute to set an example image in a layout for Android. My assumption is that there is no such thing at the moment, at least no direct support.

但是我想知道我是否搜索不够好，或者是否有解决方法.

But I was wondering whether I just did not search well enough or whether there is a workaround for this.

您如何在设计时使用 tools 在Android中定义图像占位符?

How do you define image placeholders at design time in Android with tools?

TextView的 tools 属性示例(即文本的 tools:text 属性):

Example of a tools attribute for a TextView (i.e. the tools:text attribute for text):

<TextView
    android:id="@+id/tv_vote_average"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textSize="16sp"
    android:textStyle="bold"
    tools:text="8.4/10"/>

推荐答案

就像TextView一样简单.只需使用tools:src设置图像即可.

It's just straightforward like for the TextView. Just use tools:src to set the image.

<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    tools:src="@drawable/placeholder" />

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