not able to get File from JSonObject

Question

I have Array of files (images) at localdataStore of parse.com and I want to fetch file from there, I have implemented following code...

 ParseQuery<ParseObject> query = ParseQuery.getQuery("Test_class");

query.whereEqualTo("objectId", "SSDW232sda");
query.fromLocalDatastore();

    try{
        List<ParseObject> objects = queryChild.find();
        System.out.println(objects.size());
        ParseObject object = objects.get(0);


        JSONArray imagesArr = object.getJSONArray("images");

        for(int i=0;i<imagesArr.length();i++){
            try {
                ParseFile image =  (ParseFile) imagesArr.getJSONObject(i).get("name");//.getParseFile("name");
                byte[] img = image.getData();
                bitmaps.add(BitmapFactory.decodeByteArray(img , 0, img.length));
            } catch (ParseException e1) {
                e1.printStackTrace();
                System.out.println("could not get image");
            }
        }


    }catch(Exception e) {
      e.printStackTrace();
    }

but it gives the following error

 java.lang.ClassCastException: java.lang.String cannot be cast to com.parse.ParseFile

help me to fix this problem..

the error which I mention above is log cat error... what response you are asking? — Naveed Ali, May 08 '14 at 11:57
You get this because imagesArr.getJSONObject(i).get("name") returns a String object. Maybe the name of the file? Do a printline on imagesArr.getJSONObject(i).get("name") to see what you get. Also, you should include the code where the image array is written to localdatastore — Marius Waldal, May 08 '14 at 11:57

score 1 · Answer 1 · answered May 08 '14 at 12:00

1

Here's the spec for JSON. There isn't a ParseFile object in there.

You probably want to get the String from JSON, convert it into a byte array, then call the ParseFile constructor.

Ex.

String stringFromJson = json.getString("whatever_key_you_need");
byte[] stringFromJsonAsByteArray = stringFromJson.getBytes();

ParseFile parseFile = new ParseFile("filename.txt", stringFromJsonAsByteArray);

answered May 08 '14 at 12:00

Justin Jasmann

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getting values correctly but when convert to bitmap and set to ImageView then shows empty boxes... – Naveed Ali May 08 '14 at 12:11
You sure you want a `ParseFile` and not a `ParseImageView`? Have a look at their docs on it :: https://parse.com/docs/android_guide – Justin Jasmann May 08 '14 at 12:19
I am converting byteArray to bitmap and the set it to imageView, but nothing I can see... – Naveed Ali May 08 '14 at 12:21
it gives --- SkImageDecoder::Factory returned null – Naveed Ali May 08 '14 at 12:41
Maybe this can help :: http://stackoverflow.com/questions/12006785/android-skimagedecoder-factory-returned-null – Justin Jasmann May 08 '14 at 14:09

not able to get File from JSonObject

1 Answers1