title: width of child layout not matching parent layout
body: <pre><code>&lt;com.android.systemui.statusbar.phone.NotificationsQuickSettingsContainer
          android:layout_width=&quot;match_parent&quot;
          android:layout_height=&quot;match_parent&quot;
          android:layout_gravity=&quot;@integer/notification_panel_layout_gravity&quot;
          android:id=&quot;@+id/notification_container_parent&quot;
          android:clipToPadding=&quot;false&quot;
          android:clipChildren=&quot;false&quot;&gt;
  
          &lt;FrameLayout
              android:id=&quot;@+id/qs_frame&quot;
              android:layout=&quot;@layout/qs_panel&quot;
              android:layout_width=&quot;match_parent&quot;
              android:layout_height=&quot;match_parent&quot;
              android:layout_gravity=&quot;@integer/notification_panel_layout_gravity&quot;
              android:clipToPadding=&quot;false&quot;
              android:clipChildren=&quot;false&quot;
              systemui:viewType=&quot;com.android.systemui.plugins.qs.QS&quot;
              android:contentInsetLeft=&quot;0dp&quot;
              android:contentInsetStart=&quot;0dp&quot;
              app:contentInsetLeft=&quot;0dp&quot;
              app:contentInsetStart=&quot;0dp&quot; /&gt;
  &lt;/com.android.systemui.statusbar.phone.NotificationsQuickSettingsContainer&gt;
  </code></pre>
  <p>The code from SystemUI, which android version is 11.
  Layout <code>NotificationsQuickSettingsContainer</code> take up the width of the screen, why is layout <code>qs_frame</code> only part of the screen width?</p>
  <p><a href="https://i.stack.imgur.com/P5Hd2.jpg" rel="nofollow noreferrer">Image click here</a></p>
  <p>The green background is <code>NotificationsQuickSettingsContainer</code>, i want <code>qs_frame</code> to cover the screen.</p>