Android Studio ImageView Change Only Width and Maintain Aspect Ratio

I've got an imageview, like this:

    <ImageView
        android:id="@+id/add_image_signup"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/other_text"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="20dp"
        app:srcCompat="@drawable/add_button" />

which I'm trying to scale programmatically (based on device size) with Layout Params. Something like this works great:

        val displayMetrics = DisplayMetrics()
        windowManager.defaultDisplay.getMetrics(displayMetrics)
        val height = displayMetrics.heightPixels
        val width = displayMetrics.widthPixels

        val addImage = findViewById<ImageView>(R.id.add_image_signup)
        val layoutParams = addImage.getLayoutParams()
        layoutParams.width = width * 0.3
        layoutParams.height = height * 0.1

        addImage.setLayoutParams(layoutParams)

and scales the image. However, I'd like to scale only the width, and have the height scale accordingly so that the image maintains its aspect ratio.

I tried only scaling the width, like this:

        val addImage = findViewById<ImageView>(R.id.add_image_signup)
        val layoutParams = addImage.getLayoutParams()
        layoutParams.width = width * 0.3
        addImage.setLayoutParams(layoutParams)

but that seems to have no effect.

Is there a way to only specify the width value, and have the height scale accordingly so that the image maintains its aspect ratio?

Thanks

Take the set width and divide it by the aspect ratio to get the height then set it like the code below

Display display = requireActivity().getWindowManager().getDefaultDisplay();
        DisplayMetrics outMetrics = new DisplayMetrics();
        display.getMetrics(outMetrics);

        Resources r = getResources();

        float density = getResources().getDisplayMetrics().density;
        //float dpHeight = outMetrics.heightPixels / density;
        float dpWidth = outMetrics.widthPixels / density;

        int widthPX = Math.round(TypedValue.applyDimension(
                TypedValue.COMPLEX_UNIT_DIP, yourImageFixedWidthValue, r.getDisplayMetrics()));

        float imageAspectRatio = (float) 335 / 217;
        float imageWidth = widthPX;
        float imageHeight = imageWidth / imageAspectRatio;

        imageView.getLayoutParams().height = Math.round(TypedValue.applyDimension(
                TypedValue.COMPLEX_UNIT_DIP, imageHeight, r.getDisplayMetrics()));
        imageView.setAdjustViewBounds(true);
        imageView.setScaleType(ImageView.ScaleType.FIT_XY);