MDT5_1_Ueberwachungssystem_G1/app/src/main/res/layout/activity_main.xml

<?xml version = "1.0" encoding = "utf-8"?>
<RelativeLayout 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:layout_margin = "16dp"
    tools:context = ".MainActivity">
    <TextView
        android:id = "@+id/tvConnectionInfos"
        android:layout_width = "match_parent"
        android:layout_height = "wrap_content"
        android:inputType = "textMultiLine"
        android:textAppearance = "@style/Base.TextAppearance.AppCompat.Medium" />
    <TextView
        android:id = "@+id/tvMessages"
        android:layout_width = "match_parent"
        android:layout_height = "wrap_content"
        android:layout_below="@id/tvConnectionInfos"
        android:inputType = "textMultiLine"
        android:textAppearance = "@style/Base.TextAppearance.AppCompat.Medium" />

    <Button
        android:id="@+id/btnSend"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/tvMessages"
        android:layout_centerHorizontal="true"
        android:text="SEND" />
</RelativeLayout>