Why using constraint layout, a listView pushes button out of screen? how to solve it?

Question

I have an editText, a button and a listView in a constraint layout.

The problem is that the listView pushes button and editText out of screen when I fill it in.

Can someone help me to solve it, please? Thanks a lot

Here the XML code:

<?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">

    <ListView
        android:id="@+id/lvJugadores"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

    </ListView>

    <EditText
        android:id="@+id/etJugador"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="@string/etJugadorHint"
        android:inputType="textPersonName"
        android:textAlignment="center"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/lvJugadores" />

    <Button
        android:id="@+id/btnConfirmarNuevoJugador"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/btnConfirmarNuevoJugador"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/etJugador" />

</androidx.constraintlayout.widget.ConstraintLayout>

Answer 1

Try this.

  <?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">

    <ListView
        android:id="@+id/lvJugadores"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"

        app:layout_constraintBottom_toTopOf="@id/etJugador">

    </ListView>

    <EditText
        android:id="@+id/etJugador"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:hint="etJugadorHint"
        android:inputType="textPersonName"
        android:textAlignment="center"
        app:layout_constraintBottom_toTopOf="@id/btnConfirmarNuevoJugador"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"

        app:layout_constraintTop_toBottomOf="@+id/lvJugadores" />

    <Button
        android:id="@+id/btnConfirmarNuevoJugador"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="btnConfirmarNuevoJugador"
         app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/etJugador"

          //this attribute make button and textview always within screen
          app:layout_constraintBottom_toBottomOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>