java - 解析云不返回图像

Question

我花了 3 天多的时间从 Parse Cloud 获取图像文件。但它什么也没返回。我已经检查了后端，数据已添加到那里，但它没有返回图像。有天使可以帮我解决这个问题吗？

 // Set up a customized query
        ParseQueryAdapter.QueryFactory<AnywallPost> factory =
                new ParseQueryAdapter.QueryFactory<AnywallPost>() {
                    public ParseQuery<AnywallPost> create() {
                        Location myLoc = (currentLocation == null) ? lastLocation : currentLocation;
                        ParseQuery<AnywallPost> query = AnywallPost.getQuery();
                        query.include("user");
                        query.orderByDescending("createdAt");
                        query.include("image");
                        query.whereWithinKilometers("location", geoPointFromLocation(myLoc), radius
                                * METERS_PER_FEET / METERS_PER_KILOMETER);
                        query.setLimit(MAX_POST_SEARCH_RESULTS);
                        return query;
                    }
                };

        // Set up the query adapter
        postsQueryAdapter = new ParseQueryAdapter<AnywallPost>(this, factory) {
            @Override
            public View getItemView(AnywallPost post, View view, ViewGroup parent) {
                if (view == null) {
                    view = View.inflate(getContext(), R.layout.anywall_post_item, null);
                }
                ParseFile photo = (ParseFile) post.get("image");
                TextView contentView = (TextView) view.findViewById(R.id.content_view);
                image = (ImageView) view.findViewById(R.id.picture_view);
                imageloader.DisplayImage(post.getPhoto(),image);
                TextView usernameView = (TextView) view.findViewById(R.id.username_view);
                contentView.setText(post.getText());
                usernameView.setText(post.getUser().getUsername());
                post.setPhoto(photo.getUrl());
                return view;
            }
        };

编辑版本:

  // Set up a customized query
        ParseQueryAdapter.QueryFactory<AnywallPost> factory =
                new ParseQueryAdapter.QueryFactory<AnywallPost>() {
                    public ParseQuery<AnywallPost> create() {
                        Location myLoc = (currentLocation == null) ? lastLocation : currentLocation;
                        ParseQuery<AnywallPost> query = AnywallPost.getQuery();
                        query.include("user");
                        query.orderByDescending("createdAt");
                        query.whereWithinKilometers("location", geoPointFromLocation(myLoc), radius
                                * METERS_PER_FEET / METERS_PER_KILOMETER);
                        query.setLimit(MAX_POST_SEARCH_RESULTS);
                        return query;
                    }
                };

        // Set up the query adapter
        postsQueryAdapter = new ParseQueryAdapter<AnywallPost>(this, factory) {
            @Override
            public View getItemView(AnywallPost post, View view, ViewGroup parent) {
                if (view == null) {
                    view = View.inflate(getContext(), R.layout.anywall_post_item, null);
                }
                ParseFile photo = (ParseFile) post.get("image");
                if (photo != null) {
                    photo.getDataInBackground(new GetDataCallback() {

                        @Override
                        public void done(byte[] data, ParseException e) {
                            // TODO Auto-generated method stub
                            if (data != null && e == null) {
                                Bitmap bitmap = BitmapFactory
                                        .decodeByteArray(data, 0,
                                                data.length);
                                image.setImageBitmap(bitmap);

                            } else {
                                //ParseException e
                            }
                        }
                    });
                } else {
                    //picture_not_available
                }
                TextView contentView = (TextView) view.findViewById(R.id.content_view);
                image = (ImageView) view.findViewById(R.id.picture_view);
                TextView usernameView = (TextView) view.findViewById(R.id.username_view);
                contentView.setText(post.getText());
                usernameView.setText(post.getUser().getUsername());
                post.setPhoto(photo.getUrl());
                return view;
            }
        };

Answer 1

您必须使用getDataInBackground获取图像资源

if (photo != null) {
                photo.getDataInBackground(new GetDataCallback() {

                    @Override
                    public void done(byte[] data, ParseException e) {
                        // TODO Auto-generated method stub
                        if (data != null && e == null) {
                            Bitmap bitmap = BitmapFactory
                                    .decodeByteArray(data, 0,
                                            data.length);
                            image.setImageBitmap(bitmap);

                        } else {
                            //ParseException e
                        }
                    }
                });
            } else {
                //picture_not_available
            }