Android 上的 Alpha 渐变

Alpha-gradient on Android(Android 上的 Alpha 渐变)

问题描述

I need to create an alpha-gradient on the edge of the ImageView. Preferably using only XML.

Image for example

Need to code a custom ImageView if you want colorless transparency.

If your background is a static color, here's my preferred workaround:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/your_image"/>

    <item>
        <shape android:shape="rectangle">
            <gradient android:startColor="#00efefef"
                android:endColor="#ffefefef"
                android:angle="270"
                android:type="linear"/>
        </shape>
    </item>
</layer-list>

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