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POGridLayout and Row/Column Span Woe
 

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    <p>The <a href="http://android-developers.blogspot.com/2011/11/new-layout-widgets-space-and-gridlayout.html">Android Developers Blog post introducing <code>GridLayout</code></a> shows this diagram of how spans impact automatic index allocation:</p> <p><img src="https://i.stack.imgur.com/d4dhD.png" alt="automatic index allocation"></p> <p>I am attempting to actually implement that using a <code>GridLayout</code>. Here is what I have so far:</p> <pre><code>&lt;android.support.v7.widget.GridLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res/com.commonsware.android.gridlayout" android:layout_width="fill_parent" android:layout_height="fill_parent" app:orientation="horizontal" app:columnCount="8"&gt; &lt;Button app:layout_columnSpan="2" app:layout_rowSpan="2" android:layout_gravity="fill_horizontal" android:text="@string/string_1"/&gt; &lt;Button app:layout_columnSpan="2" android:layout_gravity="fill_horizontal" android:text="@string/string_2"/&gt; &lt;Button app:layout_rowSpan="4" android:text="@string/string_3"/&gt; &lt;Button app:layout_columnSpan="3" app:layout_rowSpan="2" android:layout_gravity="fill_horizontal" android:text="@string/string_4"/&gt; &lt;Button app:layout_columnSpan="3" android:layout_gravity="fill_horizontal" android:text="@string/string_5"/&gt; &lt;Button app:layout_columnSpan="2" android:layout_gravity="fill_horizontal" android:text="@string/string_6"/&gt; &lt;android.support.v7.widget.Space app:layout_column="0" android:layout_width="36dp" /&gt; &lt;android.support.v7.widget.Space android:layout_width="36dp" /&gt; &lt;android.support.v7.widget.Space android:layout_width="36dp" /&gt; &lt;android.support.v7.widget.Space android:layout_width="36dp" /&gt; &lt;android.support.v7.widget.Space android:layout_width="36dp" /&gt; &lt;android.support.v7.widget.Space android:layout_width="36dp" /&gt; &lt;android.support.v7.widget.Space android:layout_width="36dp" /&gt; &lt;android.support.v7.widget.Space android:layout_width="36dp" /&gt; &lt;/android.support.v7.widget.GridLayout&gt; </code></pre> <p>I had to introduce the <code>&lt;Space&gt;</code> elements to ensure each column had a minimum width, otherwise, I would have a bunch of zero-width columns.</p> <p>However, even with them, I get this:</p> <p><img src="https://i.stack.imgur.com/HMMAO.png" alt="sample GridLayout"></p> <p>Notably:</p> <ul> <li><p>Despite <code>android:layout_gravity="fill_horizontal"</code>, my widgets with column spans do not fill the spanned columns</p></li> <li><p>Despite the <code>android:layout_rowSpan</code> values, nothing spans rows</p></li> </ul> <p>Can anyone reproduce the diagram from the blog post using a <code>GridLayout</code>?</p> <p>Thanks!</p>
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