如何使用约束布局以编程方式更改TextView重力

<TextView
    android:id="@+id/myTextView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintBottom_toBottomOf="parent"
    android:text="Hello World!" />

TextView textView = findViewById(R.id.myTextView);
ConstraintSet constraintSet = new ConstraintSet();

constraintSet.clone(constraintLayout); // constraintLayout是包含TextView的父布局
constraintSet.setGravity(R.id.myTextView, Gravity.END);

constraintSet.applyTo(constraintLayout);