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">@dimen/in_call_button_dimension</item>
        <item name="android:layout_height">@dimen/in_call_button_dimension</item>
        <item name="android:layout_marginBottom">@dimen/call_button_margin_vertical</item>
        <item name="android:layout_marginLeft">@dimen/call_button_margin_horizontal</item>
        <item name="android:layout_marginRight">@dimen/call_button_margin_horizontal</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>

    <!-- 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.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">@anim/activity_open_enter</item>
        <item name="android:taskOpenExitAnimation">@anim/activity_open_exit</item>
        <item name="android:taskToFrontEnterAnimation">@anim/activity_open_enter</item>
        <item name="android:taskToFrontExitAnimation">@anim/activity_open_exit</item>
    </style>

    <!-- Theme for the InCallActivity activity. Should have a transparent background for the
         circular reveal animation for a new outgoing call to work correctly. 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.Material.Light">
        <item name="android:windowAnimationStyle">@style/InCallAnimationStyle</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:windowNoTitle">true</item>
        <item name="dialpad_key_button_touch_tint">@color/incall_dialpad_touch_tint</item>
        <item name="android:textColorPrimary">@color/incall_call_banner_text_color</item>
        <item name="android:colorPrimaryDark">@color/actionbar_background_color_dark</item>
    </style>
</resources>