//activity_main.xml file -

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" >

    <EditText android:id="@+id/text_message"
     android:layout_weight="1"
     android:layout_width="0dp"
     android:layout_height="wrap_content"
     android:hint="@string/text_message" />

    <Button android:layout_height="wrap_content"
     android:layout_width="wrap_content"
     android:text="@string/send_button" />

</LinearLayout>

//strings.xml file -
<resources>

    <string name="app_name">CheckApp</string>
    <string name="hello_world">Hello world!</string>
    <string name="menu_settings">Settings</string>
    <string name="text_message">Write something</string>
    <string name="send_button">Send</string>
    <string name="title_activity_main">MainActivity</string>

</resources>