How to make TextView height to wrap_content if it has 1 or 2 lines?

Question

I have been struggling more than I would have expected on this, here is my issue.

As you can see on the image below, I want my TextView to be center horizontally in the parent, but also align vertical center with the view on the left.

The problem comes from the TextView, the text can be longer, I want it to be on 2 lines with the attribute maxLength = 12.

My XML:

<androidx.constraintlayout.widget.ConstraintLayout
    android:layout_width="0dp"
    android:layout_height="0dp"
    app:layout_constraintBottom_toTopOf="parent"
    app:layout_constraintEnd_toStartOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent">

    <TextView
        android:id="@+id/roundTextView"
        android:layout_width="60dp"
        android:layout_height="60dp"
        android:background="@drawable/oval"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/descriptionTextView"
        app:layout_constraintHorizontal_bias="0.3"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/descriptionTextView"
        android:layout_width="wrap_content"
        android:layout_height="0dp"
        android:maxLength="12"
        android:maxLines="2"
        android:text="Long Text 2 Lines"
        android:textAlignment="center"
        android:textColor="@android:color/white"
        android:textSize="30sp"
        app:layout_constraintBottom_toBottomOf="@+id/roundTextView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@+id/roundTextView" />
</androidx.constraintlayout.widget.ConstraintLayout>

If I change the text, with something longer (more than 10 length), here is the result, it's fine.

But if I change to a small text, the result is not as expected because of the 0dp height. And if I put wrap_content, the 2 lines text isn't working.

What is the right way of handling this situation?

Answer 1

By adding:

android:gravity="center_vertical"
android:maxLines="2"

the text always is shown vertically in the middle and there is no need to android:textAlignment="center".