InCallUI/res/values/styles.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2013 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
  -->

<resources>
    <drawable name="grayBg">#FF333333</drawable>

    <style name="info_label">
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_width">wrap_content</item>
        <item name="android:textAppearance">@style/TextAppearance.info_label</item>
        <item name="android:paddingEnd">4dip</item>
    </style>

    <style name="info_layout">
        <item name="android:orientation">vertical</item>
        <item name="android:paddingStart">10dip</item>
        <item name="android:paddingTop">10dip</item>
        <item name="android:paddingEnd">10dip</item>
        <item name="android:paddingBottom">10dip</item>
        <item name="android:layout_width">match_parent</item>
        <item name="android:layout_height">match_parent</item>
    </style>

    <style name="entry_layout">
        <item name="android:orientation">vertical</item>
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
    </style>

    <style name="TextAppearance" parent="android:TextAppearance">
    </style>

    <style name="TextAppearance.info_label">
        <item name="android:textSize">14sp</item>
        <item name="android:textStyle">bold</item>
    </style>


    <!-- Buttons in the main "button row" of the in-call onscreen touch UI. -->
    <style name="InCallButton">
        <item name="android:layout_width">0px</item>
        <item name="android:layout_height">@dimen/in_call_button_height</item>
        <item name="android:layout_weight">1</item>
        <item name="android:background">?android:attr/selectableItemBackground</item>
    </style>

    <!-- "Compound button" variation of InCallButton.
         These buttons have the concept of two states: checked and unchecked.
         (This style is just like "InCallButton" except that we also
         clear out android:textOn and android:textOff, to avoid the default
         text label behavior of the ToggleButton class.) -->
    <style name="InCallCompoundButton" parent="InCallButton">
        <item name="android:textOn">@null</item>
        <item name="android:textOff">@null</item>
    </style>

    <style name="VerticalSeparator">
        <item name="android:layout_width">2dp</item>
        <item name="android:layout_height">match_parent</item>
        <item name="android:background">@android:color/black</item>
    </style>

    <!-- "End" button; similar to InCallButton. -->
    <style name="InCallEndButton">
        <item name="android:layout_width">0dip</item>
        <item name="android:layout_height">@dimen/in_call_end_button_height</item>
        <item name="android:layout_weight">1</item>
    </style>

    <!-- Buttons in extra button row. -->
    <style name="InCallExtraRowButton">
        <item name="android:layout_width">@dimen/extra_row_button_width</item>
        <item name="android:layout_height">@dimen/extra_row_button_height</item>
        <item name="android:background">@null</item>
    </style>

    <!-- Text label drawn alongside buttons in the "extra button row" of
         the in-call onscreen touch UI. -->
    <style name="InCallExtraRowButtonLabel">
        <item name="android:textAppearance">?android:attr/textAppearanceSmall</item>
        <item name="android:textColor">@color/incall_call_banner_text_color</item>
        <item name="android:textAllCaps">true</item>
        <item name="android:textStyle">bold</item>
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_gravity">center_vertical</item>
        <item name="android:layout_marginStart">5dip</item>
        <item name="android:layout_marginEnd">5dip</item>
    </style>

    <style name="InCallAnimationStyle" parent="@*android:style/Animation.Holo.Activity">
        <!-- Suppress task-to-task animation happening during the transition from
             OutgoingCallBroadcaster (and SipOptionHandler) to InCallActivity.
             The transition unexpectedly happens during the transition (inside the phone task),
             because InCallActivity is using android:launchMode="singleInstance".

             - taskOpenEnterAnimation/taskOpenExitAnimation is used for the first time
               InCallActivity instance is created.

             - taskToFrontEnterAnimation/taskToFrontExitAnimation is used when InCallActivity
               is already available.
               (Note that InCallActivity won't be destroyed once it is created)

             TODO: try removing the flag instead -->
        <item name="*android:taskOpenEnterAnimation">@*android:anim/activity_open_enter</item>
        <item name="*android:taskOpenExitAnimation">@*android:anim/activity_open_exit</item>
        <item name="*android:taskToFrontEnterAnimation">@*android:anim/activity_open_enter</item>
        <item name="*android:taskToFrontExitAnimation">@*android:anim/activity_open_exit</item>
    </style>

    <!-- Theme for the InCallActivity activity.  This gives us a totally black
         window background instead of the default dark grey.  (We don't just use
         Theme.Black.NoTitleBar directly, since we want any popups or dialogs
         from the InCallActivity to have the correct holo style. -->
    <style name="Theme.InCallScreen" parent="@android:style/Theme.Holo.NoActionBar">
        <item name="android:windowBackground">@android:color/black</item>

        <item name="*android:windowAnimationStyle">@style/InCallAnimationStyle</item>
    </style>

    <style name="DialpadButtonStyle">
        <item name="android:layout_width">0dip</item>
        <item name="android:layout_height">match_parent</item>
        <item name="android:layout_weight">1</item>
        <item name="android:background">?android:attr/selectableItemBackground</item>
        <item name="android:soundEffectsEnabled">false</item>
    </style>

    <style name="DialtactsDigitsTextAppearance">
        <item name="android:maxLines">1</item>
        <item name="android:textSize">@dimen/dialpad_digits_text_size</item>
        <item name="android:textColor">?android:attr/textColorPrimary</item>
        <item name="android:freezesText">true</item>
        <item name="android:editable">true</item>
        <item name="android:cursorVisible">false</item>
    </style>

    <style name="PrimaryCallInfoPrimaryCallBanner">
        <item name="android:layout_alignParentTop">true</item>
    </style>
    <style name="PrimaryCallInfoSupplementaryInfoContainer">
        <item name="android:layout_below">@id/primary_call_banner</item>
    </style>

    <style name="SecondaryCallInfoSecondaryCallName">
        <item name="android:layout_gravity">top|left</item>
    </style>
    <style name="SecondaryCallInfoSecondaryCallStatus">
        <item name="android:layout_gravity">top|right</item>
    </style>
</resources>