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POSet position / size of UI element as percentage of screen size
 

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    <p>I'm trying to work out if it's possible to use percentage positions/sizes when creating a layout. What I want is something like this...</p> <pre><code>^ | | | 68% | | v Gallery (height equivalent of 16% total screen size) ^ | 16% v </code></pre> <p>I'm testing on a device which in landscape has a display of 800x480 actual pixels and I'm currently forcing it with the following...</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" &gt; &lt;Gallery android:id="@+id/gallery" android:layout_width="fill_parent" android:layout_height="80px" android:layout_marginTop ="320px" /&gt; &lt;/RelativeLayout&gt; </code></pre> <p>Obviously I don't want to hard-code fixed <code>px</code> units but I can't use <code>68%</code> or <code>0.68</code> for <code>layout_marginTop</code> (for example). I've looked at <code>dp</code> units but I'm not sure if I can do it that way either.</p> <p>I have to admit UI design is a weak point of mine so any advice would be gratefully received.</p> <p><strong>EDIT:</strong> For future reference if anyone is looking for a similar answer, following Alan Moore's suggestion I have the following working exactly how I want it...</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:background="@drawable/bground" android:layout_width="fill_parent" android:layout_height="fill_parent" &gt; &lt;TextView android:layout_width="fill_parent" android:layout_height="0dp" android:layout_weight="0.68" android:background="@android:color/transparent" /&gt; &lt;Gallery android:id="@+id/gallery" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="0.16" /&gt; &lt;TextView android:layout_width="fill_parent" android:layout_height="0dp" android:layout_weight="0.16" android:background="@android:color/transparent" /&gt; &lt;/LinearLayout&gt; </code></pre> <p>I managed to find some other examples of using <code>layout_weight</code> and decided to set the <code>TextView</code> heights to <code>0dp</code> and also used floats for the weights. Working great. :)</p>
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