app/src/syncbase/res/layout/sharing.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:textStyle="bold"
        android:textSize="22sp"
        android:textColor="#000000"
        android:layout_margin="5dp"
        android:text="@string/sharing_already" />

    <android.support.v7.widget.RecyclerView android:id="@+id/recycler_already"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        app:layoutManager="LinearLayoutManager" />

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:textStyle="bold"
        android:textSize="22sp"
        android:textColor="#000000"
        android:layout_margin="5dp"
        android:text="@string/sharing_possible" />

    <android.support.v7.widget.RecyclerView android:id="@+id/recycler_possible"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        app:layoutManager="LinearLayoutManager" />

    <EditText android:id="@+id/custom_email"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:textStyle="bold"
        android:textSize="22sp"
        android:textColor="#000000"
        android:hint="@string/sharing_custom_hint"
        android:layout_margin="5dp"
        android:inputType="text"
        android:imeOptions="actionSend" />

</LinearLayout>