how to properly size an image view within a grid view on java side; android?

Question

this is my code to put some image doodads in my GridView ``` public View getView(int position, View convertView, ViewGroup parent) { ImageView v; if(convertView == null) { v = new ImageView(c); v.setLayoutParams(new GridView.LayoutParams(90,90)); v.setScaleType(ImageView.ScaleType.CENTER_CROP); v.setPadding(2, 2, 2, 2); } else { v = (ImageView) convertView; } v.setImageDrawable(c.getResources().getDrawable(ops[position])); return v; } ``` but for smaller machines the layoutParams are too big, does anyone know how i can do like a (90dp, 90dp) for the width and height on the java side?

Accepted Answer

Create a dimension in XML : ``` 90dp ``` Then get it from your code : ``` int size = (int) getResources().getDimension(R.dimen.image_size); v.setLayoutParams(new GridView.LayoutParams(size, size)); ``` You can also set different dimensions depending on the screen sizes, by creating different `values` folders. For example, put a large dimension in a folder named `values-w600dp` (which will be used if the width of the screen is greater or equal to 600dp) and a smaller one in the simple `values` folder (you will have two dimens.xml files). You will find more details in the documentation.

how to properly size an image view within a grid view on java side; android?

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