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    <p>The little gap to the left/right is added by the framework since the default <code>windowTitleBackgroundStyle</code> in the <a href="https://github.com/android/platform_frameworks_base/blob/master/core/res/res/values/themes.xml" rel="nofollow">standard theme</a> used a <a href="https://github.com/android/platform_frameworks_base/blob/master/core/res/res/drawable/title_bar.xml" rel="nofollow">9-patch drawable</a> with that <a href="https://github.com/android/platform_frameworks_base/blob/master/core/res/res/drawable-hdpi/activity_title_bar.9.png" rel="nofollow">padding</a>. Here's an example on how to override this:</p> <p>In AndroidManifest.xml, add an <code>android:theme</code> for your Activity:</p> <pre><code>&lt;activity android:theme="@style/MyCustomTitlebar" android:label="Custom Titlebar" android:name=".CustomTitlebar" /&gt; </code></pre> <p>Then define the custom theme somewhere in your resources (for example in res/values/themes.xml):</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;resources xmlns:android="http://schemas.android.com/apk/res/android"&gt; &lt;style name="MyCustomTitlebar" parent="@android:style/Theme"&gt; &lt;item name="android:windowTitleBackgroundStyle"&gt;@style/MyBackground&lt;/item&gt; &lt;/style&gt; &lt;style name="MyBackground"&gt; &lt;item name="android:background"&gt;@drawable/background&lt;/item&gt; &lt;/style&gt; &lt;/resources&gt; </code></pre> <p>Since we move the background to the style, we can modify your mytitle.xml layout to the following:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;TextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/myTitle" android:layout_width="match_parent" android:layout_height="match_parent" android:text="custom title bar" /&gt; </code></pre> <p>You might need to adjust either your background (so it has some padding if it's a 9-patch) or just set the padding in the mytitle.xml layout (using paddingLeft/Right/Top/Bottom).</p>
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