packages/SystemUI/res/layout/split_clock_view.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2014 The Android Open Source Project
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~      http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License
  -->

<!-- Extends LinearLayout -->
<com.android.systemui.statusbar.policy.SplitClockView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    >
    <TextClock
        android:id="@+id/time_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:singleLine="true"
        android:textAppearance="@style/TextAppearance.StatusBar.Expanded.Clock"
        android:textSize="@dimen/qs_time_collapsed_size"
        android:textColor="?android:attr/textColorPrimary"
        />
    <TextClock
        android:id="@+id/am_pm_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:singleLine="true"
        android:textAppearance="@style/TextAppearance.StatusBar.Expanded.Clock"
        android:textSize="@dimen/qs_time_collapsed_size"
        android:textColor="?android:attr/textColorPrimary"
        android:importantForAccessibility="no"
        />

    <!-- Empty text view so we have the same height when expanded/collapsed-->
    <TextView
        android:id="@+id/empty_time_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:visibility="gone"
        android:singleLine="true"
        android:textAppearance="@style/TextAppearance.StatusBar.Expanded.Clock"
        android:textColor="?android:attr/textColorPrimary"
        />
</com.android.systemui.statusbar.policy.SplitClockView>