activity_main file for MainActivity Java Class

activity_main.xml

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

    <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="20sp"
        android:textStyle="bold"


        android:text="Send Text" />

    <com.google.android.material.textfield.TextInputLayout
        android:layout_width="match_parent"
        android:id="@+id/inputField"
        android:layout_marginTop="8sp"
        android:layout_height="wrap_content">

        <com.google.android.material.textfield.TextInputEditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="write here!" />
    </com.google.android.material.textfield.TextInputLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        >
        <Button
            android:id="@+id/flutterJavaNavigationButton"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:layout_marginHorizontal="5dp"
            android:text="Send to Flutter" />
        <Button
            android:layout_weight="1"
            android:id="@+id/kotlinSendingButton"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginHorizontal="5dp"
            android:text="Send to Kotlin" />
    </LinearLayout>
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/resultTV"
    />

</LinearLayout>