Resize the image before uploading images from openGallery method - codenameone

Question

I want to resize the image from the gallery and then upload it. Since users may select large sized images that may take much time to upload. Say I want to resize the image to 1024px width and the height rescaling with respect to the width. I used openGallery method where I don't find any parameter for specifying the width for the img to be resized. I think if I am not mistaken, (for camera img) Capture.capturePhoto(Display.getInstance().getDisplayWidth() / 2, -1) does the trick. How can I achieve it for the images from the gallery? Thankyou
Display.getInstance().openGallery(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
try {
if (evt == null) {
System.out.println("user cancelled");
return;
}
eventImgpath = (String) evt.getSource();
Image i = Image.createImage(eventImgpath);
eventImage.setIcon(i.scaledWidth(Display.getInstance().getDisplayWidth()));
eventImage.getParent().revalidate();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}, Display.GALLERY_IMAGE);
//sending the img path to connectionRequest
String eventImgPathFinal = eventImgpath;
AddBusinessForumConnection abfc = new AddBusinessForumConnection();
abfc.addBusinessForumConnectionMethod(eventImgPathFinal);
Uploading the img
public void addBusinessForumConnectionMethod(String eventImg) {
ConnectionRequest connectionRequest = new ConnectionRequest() {
#Override
protected void readResponse(InputStream input) throws IOException {
}
#Override
protected void postResponse() {
}
};
AllUrl allUrl = new AllUrl();
connectionRequest.setUrl(allUrl.addBusinessForumUrl);
connectionRequest.setPost(true);
connectionRequest.addArgument("imgUrl", new ImageBase64().getBase64(eventImg));
NetworkManager.getInstance().addToQueueAndWait(connectionRequest);
}

Answer 1

Use the ImageIO to resize:
ByteArrayOutputStream out = = new ByteArrayOutputStream();
ImageIO.getImageIO().save(path, out, ImageIO.FORMAT_JPEG,
maxWidth, -1, 1);
byte [] data = out.toByteArray();