public class SmartImageView extends ImageView {

    public SmartImageView(Context context)

    {

        super(context);

    }

    public SmartImageView(Context context, AttributeSet attrs)

    {

        super(context, attrs);

    }

    public SmartImageView(Context context, AttributeSet attrs, int defStyle)

    {

        super(context, attrs, defStyle);

    }

    @Override

    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

        try {

            Drawable drawable = getDrawable();

            if (drawable == null) {

                setMeasuredDimension(0, 0);

            }

            else {

                float imageRatio = (float)drawable.getIntrinsicWidth() / drawable.getIntrinsicHeight();

                float viewRatio = (float)MeasureSpec.getSize(widthMeasureSpec) / MeasureSpec.getSize(heightMeasureSpec);

                // Image is wider than the display (ratio)

                if (imageRatio >= viewRatio) {

                    int width = MeasureSpec.getSize(widthMeasureSpec);

                    int height = (int) (width / imageRatio);

                    setMeasuredDimension(width, height);

                }

                // Image is taller than the display (ratio)

                else {

                    int height = MeasureSpec.getSize(heightMeasureSpec);

                    int width = (int)(height * imageRatio);

                    setMeasuredDimension(width, height);

                }

            }

        } catch (Exception e) {

            super.onMeasure(widthMeasureSpec, heightMeasureSpec);

        }

    }

}