How to pin a ParseObject with a ParseFile to the Parse Local Datastore in OFFLINE?

Question

I am using the following code to store the ParseObject with a ParseFile. I have enabled Parse local datastore in Application subclass. This code storing an instance of the P

Answer 1

I have solved this problem by simply storing the bytes of the file with ParseObject. When I want my file, I am writing those bytes back to a file.

My requirement was to store a audio recording file with name in the parse. I followed the these steps: 1. Get the byte array of file 2. Put the byte array into ParseObject 3. Call ParseObject#saveEventually()

Code:

    File file = new File(filePath);
    FileInputStream fis = null;
    try {
        fis = new FileInputStream(file);
        byte data[] = new byte[(int) file.length()];
        fis.read(data);

        ParseObject obj = new ParseObject("Recordings");
        obj.put("name", name);          
        obj.put("data", data);
        obj.saveEventually();
    } catch (IOException e) {
        e.printStackTrace();
    }

Answer 2

I really liked ashokgujju's solution. In my case, I wanted to save a picture from an Android device in offline mode, so this is what happened to me:

1.- Only by doing that (ashokgujju's solution) will not add a file into your parse table, as SAndroidD pointed out, if you want that, you might use an aftersave Parse Cloud function, something like this:

Parse.Cloud.afterSave("Recordings_or_WhatEverYourTableIs", function(request){
    bytes = request.object.get("data"); //"data" is the name given by  ashokgujju at "obj.put("data", data);"

    if(bytes){
         var file = new Parse.File("myFile.png", bytes); //png or whatever you want
         file.save().then(function(success){
                  request.object.set("record_or_MyColumnWithParseFile", file);
                  request.object.unset("data"); //optional, if you are not going to use this data, it has no meaning keep it there anymore and you will save some space
                  request.object.save();
         },function(error){
                  //error
         }); 
    }

}

That worked like a charm! but...

2.- But only for the Thumbnail, I mean, a very small picture, once I wanted to do the same with a big picture, I faced this:

com.parse.ParseRequest$ParseRequestException: The object is too large -- should be less than 128 kB

It took me a while to realise that, because no errors where shown, just like SAndroidD was saying. I had to add a callback to saveEventually to see it.

  File file = new File(filePath);
    FileInputStream fis = null;
    try {
        fis = new FileInputStream(file);
        byte data[] = new byte[(int) file.length()];
        fis.read(data);

        ParseObject obj = new ParseObject("Recordings");
        obj.put("name", name);          
        obj.put("data", data);
        obj.saveEventually(new SaveCallback() {
                    @Override
                    public void done(ParseException e) {
                        Log.i(MyClass.logName," is it everything ok boy? "+e);
                    }
                });
    } catch (IOException e) {
        e.printStackTrace();
    }

So! to summarize: ashokgujju's cool workaround plus my afterSave function will save any parseFile in offline mode, as long as the file itself is not that big.

Answer 3

I found a solution of this problem

ckeckout this code

File file = new File(imagePath);
                FileInputStream fis = null;
                try {
                    fis = new FileInputStream(file);
                    byte data[] = new byte[(int) file.length()];
                    fis.read(data);

                    final ParseFile f=new ParseFile("img", data);

                    f.saveInBackground(new SaveCallback() {

                        @Override
                        public void done(ParseException arg0) {
                            //if (arg0.equals(null)) {
                                 ParseObject oImg=new ParseObject("Image");
                                 oImg.put("img", f);
                                 oImg.put("name", edtUN.getText().toString());

                                 oImg.saveEventually(new SaveCallback() {

                                    @Override
                                    public void done(ParseException arg1) {

                                        System.out
                                        .println("img save...");

                                    }
                                });
                            //}
                        }
                    }, new ProgressCallback() {

                        @Override
                        public void done(Integer arg0) {
                            //display img upload progress

                        }
                    });

and then when net is on and where open then write in onResume() method of your first activity

ParseQuery<ParseObject> queryImg = ParseQuery.getQuery("Image");
            queryImg.fromPin(ApplicationParse.TODO_GROUP_NAME);
            queryImg.whereEqualTo("isDraft", true);
            queryImg.findInBackground(new FindCallback<ParseObject>() {

                @Override
                public void done(List<ParseObject> todos, ParseException e) {
                    if (e == null) {
                        for (final ParseObject todo : todos) {
                            // Set is draft flag to false before syncing to Parse
                            // todo.setDraft(false);
                            todo.saveInBackground(new SaveCallback() {

                                @Override
                                public void done(ParseException e) {
                                    //if (e == null) {
                                        // Let adapter know to update view
                                        if (!isFinishing()) {
                                            //refresh list data

                                            System.out.println("Image DATA is saved ..... ");

                                        }

                                }

                            });

                        }
                    } else {
                        Log.i("MainActivity","syncTodosToParse: Error finding pinned todos: "+ e.getMessage() );
                        e.printStackTrace();
                    }
                }

            });