Method isPNG

CodenameOne/src/com/codename1/ui/Image.java:945–948

(InputStream inputStream)

    ///
    /// true if PNG, false otherwise
    public static boolean isPNG(InputStream inputStream) throws IOException {
        String type = Util.guessMimeType(inputStream);
        return "image/png".equals(type);
    }

    private HashMap<Dimension, Object> getScaleCache() {
        if (scaleCache == null) {