Picture distorted with Camera and getOptimalPreviewSize

Question

I am on a Camera App which taking basic pictures. I have an issue when I get the best optimal preview size.

In fact, with this first code :

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Answer 1

The best way is to get preview size with the closest aspect ratio:

Camera.Size getBestPreviewSize(int width, int height, Camera.Parameters parameters) {
        Camera.Size result=null;
        float dr = Float.MAX_VALUE;
        float ratio = (float)width/(float)height;

        for (Camera.Size size : parameters.getSupportedPreviewSizes()) {
            float r = (float)size.width/(float)size.height;
            if( Math.abs(r - ratio) < dr && size.width <= width && size.height <= height ) {
                dr = Math.abs(r - ratio);
                result = size;
            }
        }

        return result;
    }

Where width and height parameters are your surface size.