### oefening 1 ###

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TableLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent" >

            <EditText
                android:id="@+id/txtNumber1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />

        </TableRow>

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent" >

            <EditText
                android:id="@+id/txtNumber2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />

        </TableRow>

        <TableRow
            android:layout_width="match_parent"
            android:layout_height="match_parent" >

            <Button
                android:id="@+id/btnAdd"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="optellen" />

            <TextView
                android:id="@+id/txtResult1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
        </TableRow>

    </TableLayout>

</androidx.constraintlayout.widget.ConstraintLayout>