k-9/res/layout/message_view_header.xml

<?xml version="1.0" encoding="utf-8"?>

<merge xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- Header area -->
    <LinearLayout
        android:id="@+id/header_container"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        >
        <View
            android:id="@+id/chip"
            android:layout_marginTop="1dip"
            android:layout_marginBottom="1dip"
            android:layout_width="6dip"
            android:layout_height="fill_parent" />
        <LinearLayout
            android:id="@+id/top_container"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            >
        <LinearLayout
          android:layout_width="fill_parent"
          android:layout_alignParentRight="true"
          android:layout_alignParentTop="true"
          android:gravity="fill_horizontal"
          android:layout_height="wrap_content">
        <LinearLayout android:id="@+id/people"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:paddingLeft="4dip"
            android:layout_weight="5"
            android:orientation="vertical">
         <TextView android:id="@+id/subject"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:textSize="10sp"
            android:textStyle="bold"
            android:textColor="?android:attr/textColorSecondary"
            android:textAppearance="?android:attr/textAppearanceSmall" />
            >
            <LinearLayout
                android:id="@+id/from_container"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:baselineAligned="true" >
                <TextView
                    android:id="@+id/from"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:paddingRight="6dip"
                    android:singleLine="true"
                    android:ellipsize="end"
                    android:textColor="?android:attr/textColorPrimary"
                    android:textAppearance="?android:attr/textAppearanceSmall" />
            </LinearLayout>
            <LinearLayout
                android:id="@+id/to_container"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:baselineAligned="true" >
                <TextView
                    android:id="@+id/to_label"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:paddingRight="4dip"
                    android:text="@string/message_to_label"
                    android:textSize="10sp"
                    android:textStyle="bold"
                    android:textColor="?android:attr/textColorSecondary" />
           <TextView android:id="@+id/to"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:singleLine="false"
                    android:ellipsize="none"
                    android:textSize="10sp"
                    android:textColor="?android:attr/textColorSecondary"
                    android:textAppearance="?android:attr/textAppearanceSmall" />
         </LinearLayout>
         <LinearLayout android:id="@+id/cc_container"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:baselineAligned="true">
           <TextView android:id="@+id/cc_label"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:paddingRight="4dip"
                    android:text="@string/message_view_cc_label"
                    android:textSize="10sp"
                    android:textStyle="bold"
                    android:textColor="?android:attr/textColorSecondary" />
           <TextView android:id="@+id/cc"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:singleLine="false"
                    android:ellipsize="none"
                    android:textSize="10sp"
                    android:textColor="?android:attr/textColorSecondary"
                    android:textAppearance="?android:attr/textAppearanceSmall" />
            </LinearLayout>
            <TextView android:id="@+id/additional_headers_view"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:paddingBottom="4dip"
               android:baselineAligned="true"
               android:singleLine="false"
               android:ellipsize="none"
               android:textSize="10sp"
               android:textColor="?android:attr/textColorSecondary"
               android:textAppearance="?android:attr/textAppearanceSmall" >
            </TextView>
          </LinearLayout>
          <LinearLayout android:id="@+id/topright_container"
                android:orientation="vertical"
                android:layout_weight="0.1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:gravity="right"
                >
             <CheckBox android:id="@+id/flagged"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:focusable="false"
               android:layout_alignParentRight="true"
               style="?android:attr/starStyle" />
             <TextView android:id="@+id/date"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:layout_alignParentRight="true"
              android:singleLine="true"
              android:ellipsize="none"
              android:textSize="10sp"
              android:textColor="?android:attr/textColorPrimary"
              android:textAppearance="?android:attr/textAppearanceSmall" />
             <TextView android:id="@+id/time"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:layout_alignParentRight="true"
              android:textSize="10sp"
              android:singleLine="true"
              android:ellipsize="none"
              android:textColor="?android:attr/textColorPrimary"
              android:textAppearance="?android:attr/textAppearanceSmall" />
           <LinearLayout android:id="@+id/icons_container"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:baselineAligned="true">
             <View android:id="@+id/attachment"
                 android:layout_width="22sp"
                 android:layout_height="22sp"
                 android:background="@drawable/ic_email_attachment_small" />
           </LinearLayout>
           </LinearLayout>
            </LinearLayout>
        </LinearLayout>
    </LinearLayout>
    <LinearLayout
        android:id="@+id/show_pictures_section"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dip"
        android:paddingLeft="6dip"
        android:paddingRight="3dip"
        android:paddingTop="4dip"
        android:paddingBottom="4dip"
        android:baselineAligned="false"
        android:visibility="gone">
        <TextView
            android:textAppearance="?android:attr/textAppearanceSmall"
            android:textColor="?android:attr/textColorSecondary"
            android:text="@string/message_view_show_pictures_instructions"
            android:layout_gravity="center"
            android:layout_width="0dip"
            android:layout_height="wrap_content"
            android:layout_weight="1.0" />
     <Button android:id="@+id/show_pictures"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/message_view_show_pictures_action" />
    </LinearLayout>
    <LinearLayout
        android:id="@+id/layout_decrypt"
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:visibility="gone">

        <LinearLayout
            android:id="@+id/crypto_signature"
            android:orientation="horizontal"
            android:layout_height="wrap_content"
            android:layout_width="0dip"
            android:layout_weight="2"
            android:gravity="center_vertical">

            <RelativeLayout
                android:layout_height="wrap_content"
                android:layout_width="wrap_content">

                <ImageView
                    android:id="@+id/ic_crypto_signature"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:src="@drawable/signed_large"/>

                <ImageView
                    android:id="@+id/ic_crypto_signature_status"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:src="@drawable/overlay_error"/>

            </RelativeLayout>

            <LinearLayout
                android:orientation="vertical"
                android:layout_height="wrap_content"
                android:layout_width="wrap_content"
                android:paddingLeft="5dip">

                <TextView
                    android:id="@+id/userId"
                    android:textAppearance="?android:attr/textAppearanceMedium"
                    android:ellipsize="end"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="left"/>

                <TextView
                    android:id="@+id/userIdRest"
                    android:textAppearance="?android:attr/textAppearanceSmall"
                    android:ellipsize="end"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="left"/>

            </LinearLayout>

        </LinearLayout>

        <Button
            android:text="@string/btn_decrypt"
            android:id="@+id/btn_decrypt"
            android:layout_width="0dip"
            android:layout_height="wrap_content"
            android:layout_weight="1"/>

    </LinearLayout>
    <!-- Content area -->
    <com.fsck.k9.view.MessageWebView
        android:id="@+id/message_content"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent" />
    <com.fsck.k9.view.AccessibleWebView
        android:id="@+id/accessible_message_content"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent" />
    <!-- Attachments area -->
    <LinearLayout
        android:id="@+id/attachments"
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:padding="4dip" />
    <Button android:id="@+id/download_remainder"
        android:text="@string/message_view_download_remainder"
        android:layout_height="wrap_content"
        android:visibility="gone"
        android:layout_width="fill_parent" />
</merge>