如何在Android的EditText中将提示文本居中？

<style name="CenteredHintEditText" parent="Widget.AppCompat.EditText">
    <item name="android:gravity">center_vertical</item>
    <item name="android:paddingTop">16dp</item>
    <item name="android:paddingBottom">16dp</item>
</style>

<EditText
    android:id="@+id/editText"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="Enter text here"
    style="@style/CenteredHintEditText" />

EditText editText = findViewById(R.id.editText);
editText.setGravity(Gravity.CENTER_VERTICAL);
editText.setPadding(0, 16, 0, 16);
editText.setHint("Enter text here");

public class CenteredHintDrawable extends Drawable {
    private Paint paint;
    private String hint;

    public CenteredHintDrawable(Context context, String hint) {
        this.hint = hint;
        paint = new Paint(Paint.ANTI_ALIAS_FLAG);
        paint.setTextSize(16 * context.getResources().getDisplayMetrics().density);
        paint.setColor(ContextCompat.getColor(context, android.R.color.darker_gray));
    }

    @Override
    public void draw(@NonNull Canvas canvas) {
        Rect bounds = getBounds();
        Paint.FontMetrics fontMetrics = paint.getFontMetrics();
        float textHeight = fontMetrics.bottom - fontMetrics.top;
        float textWidth = paint.measureText(hint);
        float x = bounds.centerX() - textWidth / 2;
        float y = bounds.centerY() - textHeight / 2 - fontMetrics.top;
        canvas.drawText(hint, x, y, paint);
    }

    @Override
    public void setAlpha(int alpha) {
        paint.setAlpha(alpha);
    }

    @Override
    public void setColorFilter(@Nullable ColorFilter colorFilter) {
        paint.setColorFilter(colorFilter);
    }

    @Override
    public int getOpacity() {
        return PixelFormat.TRANSLUCENT;
    }
}

EditText editText = findViewById(R.id.editText);
CenteredHintDrawable hintDrawable = new CenteredHintDrawable(this, "Enter text here");
editText.setBackground(hintDrawable);