When specified, the exact position can be controlled with contentPosition prop. 'none' - The image is not resized and is centered by default. If necessary, the image will be stretched or squished to fit. 'fill' - The image is sized to entirely fill the container box.
'contain' - The image is scaled down or up to maintain its aspect ratio while fitting within the container box. If the image's aspect ratio does not match the aspect ratio of its box, then the object will be clipped to fit. 'cover' - The image is sized to maintain its aspect ratio while filling the container box. In a variety of ways such as 'preserve that aspect ratio' or 'stretch up and take up as much space as possible'. This property tells the image to fill the container