React Native: Resize custom UI component

I've built a very simple native Android UI component and I want to update the size of its child view when a button from my react native project is clicked. To be more precise, when this button is clicked then I send a command to my SimpleViewManager which in turn calls the resizeLayout() of my custom view.

I can verify that the resizeLayout() is properly called but the layout is not resized until I rotate the phone. Obviously, changing the device's orientation triggers the draw() of my custom view but so does the invalidate() which I explicitly call.

Other layout changes like changing the background color instead of resizing it work fine.

My custom component looks like this:

public class CustomComponent extends RelativeLayout {
    public CustomComponent(Context context) {
        super(context);
        init();
    }

    public CustomComponent(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public CustomComponent(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        inflate(getContext(), R.layout.simple_layout, this);
    }

    public void resizeLayout(){
        LinearLayout childLayout = (LinearLayout) findViewById(R.id.child_layout);
        RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) childLayout.getLayoutParams();
        layoutParams.height = 50;
        layoutParams.width= 50;
        childLayout.setLayoutParams(layoutParams);

        invalidate();
    }
}

and the simple_layout.xml looks like this:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/root_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:id="@+id/child_layout"
        android:layout_width="100dp"
        android:layout_height="50dp"
        android:background="#ffee11"/>
</RelativeLayout>

Any help would be greatly appreciated.