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POAndroid XML layer-list: How to position the top layer
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  1. POAndroid XML layer-list: How to position the top layer
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    copied!<p>I have this XML drawable - tab_background_unselected:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;layer-list xmlns:android="http://schemas.android.com/apk/res/android" &gt; &lt;item&gt; &lt;shape android:shape="rectangle" &gt; &lt;solid android:color="@color/background_grey" /&gt; &lt;/shape&gt; &lt;/item&gt; &lt;/layer-list&gt; </code></pre> <p>which creates this shape:</p> <p><img src="https://i.stack.imgur.com/lkauX.png" alt="background rectangle"></p> <p>and this arrow shape xml drawable - tab_selected_arrow:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;layer-list xmlns:android="http://schemas.android.com/apk/res/android" &gt; &lt;item&gt; &lt;rotate android:fromDegrees="45" android:pivotX="-40%" android:pivotY="87%" android:toDegrees="45" &gt; &lt;shape android:shape="rectangle" &gt; &lt;solid android:color="@color/background_dark_green" /&gt; &lt;/shape&gt; &lt;/rotate&gt; &lt;/item&gt; &lt;/layer-list&gt; </code></pre> <p>which creates this shape:</p> <p><img src="https://i.stack.imgur.com/L0B44.png" alt="top layer triangle"></p> <p>I'm using this drawable XML (instead of PNG file) in order to create a layer-list: </p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;layer-list xmlns:android="http://schemas.android.com/apk/res/android" &gt; &lt;item android:drawable="@drawable/tab_background_unselected"&gt; &lt;/item&gt; &lt;item android:drawable="@drawable/tab_selected_arrow"&gt; &lt;/item&gt; &lt;/layer-list&gt; </code></pre> <p>but I want the final image to look like this:</p> <p><img src="https://i.stack.imgur.com/djgJR.png" alt="final image"></p> <p>I don't know how to set the gravity of the arrow (the second item and the top layer) to center|bottom... I've tried using <code>bitmap</code> tag but it only accepts image files.</p> <p>I need this to be a XML drawable because</p> <ol> <li>I need it to be inside a drawable selector</li> <li>I don't want to make it a PNG and create different file for each screen resolution</li> </ol>
 

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