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PODefining XML Parent Style of Gradient / Shape / Corners
 

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    <p>How can I define an easily reusable base shape (or gradient, or corners) in XML?</p> <p>I have a dozen or so drawable gradients that will be the same other than the start and end colors. I was hoping to define the identical stuff somewhere else and have an XML file for each different gradient that only defined the start and end colors. Is that possible?</p> <p>This is the base:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"&gt; &lt;gradient xmlns:android="http://schemas.android.com/apk/res/android" android:type="linear" android:angle="270" android:startColor="#e1ffffff" android:endColor="#e100ff00"&gt; &lt;stroke android:width="1dp" android:color="#ff000000" /&gt; &lt;corners android:radius="4dp" /&gt; &lt;/gradient&gt; &lt;/shape&gt; </code></pre> <p>Then I wanted to overwrite the startColor and endColor (and maybe the corners radius too or any other property) in each drawable's XML file.</p> <p>I tried using both parent and styles, but neither of them use any of the properties. For example:</p> <pre><code>&lt;style name="base_gradient"&gt; &lt;item name="android:angle"&gt;270&lt;/item&gt; &lt;item name="android:type"&gt;linear&lt;/item&gt; &lt;item name="android:startColor"&gt;#e1ffffff&lt;/item&gt; &lt;item name="android:endColor"&gt;#e100ff00&lt;/item&gt; &lt;/style&gt; </code></pre> <p>And then the drawable looks like:</p> <pre><code>&lt;gradient style="@style/base_gradient" /&gt; </code></pre> <p>That didn't work. I tried similarly putting the above in its own XML file and then doing this for each drawable:</p> <pre><code>&lt;gradient parent="@drawable/base_gradient" /&gt; </code></pre> <p>That did not work either.</p> <p>Is there a way to do this?</p>
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