Parse.com: JSONObject cannot be cast to ParseFile

Question

I'm trying to retrieve the image from Parse.com. In DataBrowser, if the image file is empty its crashing in code. so I'm handling this error by checking if file!=null.

Its crashing at this line ParseFile file = (ParseFile) ob.get("image"); saying JSONObject cannot be cast to ParseFile.

So How to handle if Parse File is empty??

for (ParseObject ob : result) {
String perf = ob.getString("info");
ParseFile file = (ParseFile) ob.get("image");
if (file != null) {
    image_url = file.getUrl();
    } else {
         /*load some default image url*/
        image_url = "www.abc.com/image.png";
    }
    Picasso.with(getActivity()).load(image_url).into(imageView);
    textView.setText(perf);
    layoutCards.setVisibility(View.VISIBLE);
}

Get(image) is return null. Nothing to cast.

Robert Rowntree
– Robert Rowntree

2014-07-16 08:40:56 +00:00
Commented Jul 16, 2014 at 8:40 — Robert Rowntree
– Robert Rowntree, Commented Jul 16, 2014 at 8:40

Sreejith B Naick · Accepted Answer · 2014-07-16 08:49:40Z

3

Try:

(Make sure in parse databrowser there is a field called "image" where you store parsefile)

ParseFile parseFile = ob.getParseFile("image");

then check:

if (parseFile != null && parseFile.getUrl() != null && parseFile.getUrl().length() > 0) {
            ...
}

answered Jul 16, 2014 at 8:49

Sreejith B Naick

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1 Comment

DroidLearner Over a year ago

Knock Knock!!Thanks for figuring out Dexter. In older versions of Parse I was using object.get("image"). In Parse-1.5.1.jar its object.getParseFile("image");

Sam blood Kao · Accepted Answer · 2014-07-16 09:06:30Z

0

How about catch the NullPointerException like this :

for(ParseObject ob : results) {
    try {
        ParseFile imageFile = (ParseFile) ob.get("image");

        imageFile.getDataInBackground(new GetDataCallback() {
            public void done(byte[] data, ParseException e) {
                if (e == null) {
                    // data has the bytes for the image
                    Log.d(TAG,"get image");
                } else {
                    // something went wrong
                }
            }
       });
    } catch (NullPointerException e) {
        Log.d(TAG,"got no image");
    }
}

answered Jul 16, 2014 at 9:06

Sam blood Kao

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1 Comment

Sam blood Kao Over a year ago

I put a image file to my parse db then I delete the image file, (but the raw is still exist, just the image file is deleted) and these code works on this circumstance.

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