3 widoki

<?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"
    android:background="@drawable/main_background_transparent"
    tools:context=".ProductAcitivity">

    <ImageView
        android:id="@+id/product_img"
        android:layout_width="250dp"
        android:layout_height="250dp"
        android:layout_marginTop="24dp"
        android:src="@drawable/product1"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.497"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/pt_product_name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:layout_margin="30dp"
        android:ems="10"
        android:inputType="none"
        android:textAlignment="center"
        android:textStyle="bold"
        android:text="Nazwa produktu"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.507"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/product_img" />

    <TextView
        android:id="@+id/pt_product_type_rate"
        android:layout_width="match_parent"
        android:layout_margin="30dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:ems="10"
        android:inputType="none"
        android:textAlignment="center"
        android:text="Typ i ocena produktu"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.502"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/pt_product_name" />

    <TextView
        android:id="@+id/pt_product_desc"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="30dp"
        android:layout_marginTop="24dp"
        android:ems="10"
        android:text="Opis produktu"
        android:focusableInTouchMode="false"
        android:inputType="none"
        android:textAlignment="center"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.504"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/pt_product_type_rate" />

    <TextView
        android:id="@+id/pt_product_ingredients"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="30dp"
        android:layout_marginTop="24dp"
        android:ems="10"
        android:text="Skład produktu"
        android:focusableInTouchMode="false"
        android:inputType="none"
        android:textAlignment="center"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.504"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/pt_product_desc" />

    <Button
        android:id="@+id/take_photo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:layout_marginStart="50dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="50dp"
        android:layout_marginBottom="24dp"
        android:layout_weight="1"
        android:background="@color/purple_200"
        android:gravity="center"
        android:text="Usuń produkt"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.496"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/pt_product_ingredients"
        app:layout_constraintVertical_bias="0.923" />

</androidx.constraintlayout.widget.ConstraintLayout>




<?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"
    tools:context=".ScanProduct"
    android:background="@drawable/main_background_transparent">

    <TextView
        android:id="@+id/text_data"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:text="Aby ropocząć skanowanie, zrób nowe zdjęcie lub wybierz z albumu!"
        android:textColor="@color/black"
        android:layout_margin="30dp"
        android:textSize="16dp" />

    <LinearLayout
        android:id="@+id/linear_holder"
        android:layout_alignParentBottom="true"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center">
        <Button
            android:id="@+id/take_photo"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Zrób zdjęcie"
            android:background="@color/purple_200"
            android:gravity="center"
            android:layout_margin="8dp"/>
        <Button
            android:visibility="gone"
            android:id="@+id/copy_data"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Skopiuj tekst"
            android:background="@drawable/round_shape_button"
            android:layout_margin="8dp"/>
    </LinearLayout>

</RelativeLayout>


<?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=".SearchProduct"
    android:background="@drawable/main_background_transparent">

    <EditText
        android:id="@+id/tv_search"
        android:layout_width="200dp"
        android:layout_height="48dp"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        android:ems="10"
        android:hint="Szukaj..."
        android:inputType="text"
        android:minHeight="48dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/btn_search"
        android:layout_width="110dp"
        android:layout_height="60dp"
        android:layout_marginStart="36dp"
        android:layout_marginTop="8dp"
        android:onClick="search"
        android:text="Szukaj"
        app:layout_constraintStart_toEndOf="@+id/tv_search"
        app:layout_constraintTop_toTopOf="parent" />

    <ListView
        android:id="@+id/ls_search_result"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:divider="#00000000"
        android:layout_marginTop="100px"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>